Xmu and Xmuu Library API Reference

X Version 11, Release 7.7

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Table of Contents

Introduction
Atom Functions
Error Handler Functions
System Utility Functions
Window Utility Functions
Cursor Utility Functions
Graphics Functions
Selection Functions
Type Converter Functions
Character Set Functions
Keyboard Event Translation Functions
Compound Text Functions
CloseDisplay Hook Functions
Display Queue Functions
Toolkit Convenience Functions
Standard Colormap Functions
Widget Description Functions
Participation in the Editres Protocol
Index

Introduction

The Xmu Library is a collection of miscellaneous (some might say random)
utility functions that have been useful in building various applications and
widgets. This library is required by the Athena Widgets.

Starting in XFree86 4.1.0, and incorporated into X11R6.7 and later releases, a
subset of the functions that do not rely on the Athena Widgets (libXaw) or X
Toolkit Instrinsics (libXt) are provided in a second library, libXmuu.

Programs using either of these libraries are encouraged to determine the
correct compiler and linker options via the xmu or xmuu module names for 
pkg-config, such as:

cc -c xapplication.c `pkg-config --cflags xmu`
cc -o xapplication xapplication.o `pkg-config --libs xmu`


Atom Functions

To use the functions and macros defined in this section, you should include the
header file <X11/Xmu/Atoms.h> and link against the libXmu library.

XA_ATOM_PAIR(d);

XA_CHARACTER_POSITION(d);

XA_CLASS(d);

XA_CLIENT_WINDOW(d);

XA_CLIPBOARD(d);

XA_COMPOUND_TEXT(d);

XA_DECNET_ADDRESS(d);

XA_DELETE(d);

XA_FILENAME(d);

XA_HOSTNAME(d);

XA_IP_ADDRESS(d);

XA_LENGTH(d);

XA_LIST_LENGTH(d);

XA_NAME(d);

XA_NET_ADDRESS(d);

XA_NULL(d);

XA_OWNER_OS(d);

XA_SPAN(d);

XA_TARGETS(d);

XA_TEXT(d);

XA_TIMESTAMP(d);

XA_USER(d);

XA_UTF8_STRING(d);

These macros take a display as argument and return an Atom. The name of the
atom is obtained from the macro name by removing the leading characters “XA_”.
The Atom value is cached, such that subsequent requests do not cause another
round-trip to the server.

AtomPtr XmuMakeAtom(const char *name);

name specifies the atom name

This function creates and initializes an opaque object, an AtomPtr, for an Atom
with the given name. XmuInternAtom can be used to cache the Atom value for one
or more displays.

char *XmuNameOfAtom(AtomPtr atom_ptr);

atom_ptr specifies the AtomPtr

The function returns the name of an AtomPtr.

Atom XmuInternAtom(Display *dpy, AtomPtr atom_ptr);

dpy      specifies the connection to the X server

atom_ptr specifies the AtomPtr

This function returns the Atom for an AtomPtr. The Atom is cached, such that
subsequent requests do not cause another round-trip to the server.

char *XmuGetAtomName(Display *dpy, Atom atom);

dpy  specifies the connection to the X server

atom specifies the atom whose name is desired

This function returns the name of an Atom. The result is cached, such that
subsequent requests do not cause another round-trip to the server.

void XmuInternStrings(Display *dpy, String *names, Cardinal count, Atom
*atoms);

dpy   specifies the connection to the X server

names specifies the strings to intern

count specifies the number of strings

atoms returns the list of Atom values

This function converts a list of atom names into Atom values. The results are
cached, such that subsequent requests do not cause further round-trips to the
server. The caller is responsible for preallocating the array pointed at by
atoms.

Error Handler Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/Error.h> and link against the libXmu or libXmuu library.

int XmuPrintDefaultErrorMessage(Display *dpy, XErrorEvent *event, FILE *fp);

dpy   specifies the connection to the X server

event specifies the error

fp    specifies where to print the error message

This function prints an error message, equivalent to Xlib's default error
message for protocol errors. It returns a non-zero value if the caller should
consider exiting, otherwise it returns 0. This function can be used when you
need to write your own error handler, but need to print out an error from
within that handler.

int XmuSimpleErrorHandler(Display *dpy, XErrorEvent *errorp);

dpy    specifies the connection to the X server

errorp specifies the error

This function ignores errors for BadWindow errors for XQueryTree and 
XGetWindowAttributes, and ignores BadDrawable errors for XGetGeometry; it
returns 0 in those cases. Otherwise, it prints the default error message, and
returns a non-zero value if the caller should consider exiting, and 0 if the
caller should not exit.

System Utility Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/SysUtil.h> and link against the libXmu or libXmuu library.

int XmuGetHostname(char *buf, int maxlen);

buf    returns the host name

maxlen specifies the length of buf

This function stores the null terminated name of the local host in buf, and
returns length of the name. This function hides operating system differences,
such as whether to call gethostname or uname.

int XmuSnprintf(char *str, int size, ...);

str  string to write output to

size specifies the size of str

This function was provided as a portable implementation of snprintf before all
platforms could be relied on to provide their own. It is now deprecated in
favor of calling snprintf directly and should only be used in software that
needs to continue to support non-Unix98 compliant platforms.

Window Utility Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/WinUtil.h> . To use XmuClientWindow, you may link against either
the libXmu or libXmuu libraries. The other functions in this section require
linking against the libXmu library.

Screen *XmuScreenOfWindow(Display *dpy, Window w);

dpy specifies the connection to the X server

w   specifies the window

This function returns the Screen on which the specified window was created.

Window XmuClientWindow(Display *dpy, Window win);

dpy specifies the connection to the X server

win specifies the window

This function finds a window, at or below the specified window, which has a 
WM_STATE property. If such a window is found, it is returned, otherwise the
argument window is returned.

Bool XmuUpdateMapHints(Display *dpy, Window w, XSizeHints *hints);

dpy   specifies the connection to the X server

win   specifies the window

hints specifies the new hints, or NULL

This function clears the PPosition and PSize flags and sets the USPosition and 
USSize flags in the hints structure, and then stores the hints for the window
using XSetWMNormalHints and returns True. If NULL is passed for the hints
structure, then the current hints are read back from the window using 
XGetWMNormalHints and are used instead, and True is returned; otherwise False
is returned.

Cursor Utility Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/CurUtil.h> and link against the libXmu or libXmuu library.

int XmuCursorNameToIndex(const char *name);

name specifies the name of the cursor

This function takes the name of a standard cursor and returns its index in the
standard cursor font. The cursor names are formed by removing the “XC_” prefix
from the cursor defines listed in Appendix B of the Xlib manual.

Graphics Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/Drawing.h> and link against the libXmu library.

void XmuDrawRoundedRectangle(Display *dpy, Drawable draw, GC gc, int x, int y,
int w, int h, int ew, int eh);

dpy  specifies the connection to the X server

draw specifies the drawable

gc   specifies the GC

x    specifies the upper left x coordinate

y    specifies the upper left y coordinate

w    specifies the rectangle width

h    specifies the rectangle height

ew   specifies the corner width

eh   specifies the corner height

This function draws a rounded rectangle, where x, y, w, h are the dimensions of
the overall rectangle, and ew and eh are the sizes of a bounding box that the
corners are drawn inside of; ew should be no more than half of w, and eh should
be no more than half of h. The current GC line attributes control all
attributes of the line.

void XmuFillRoundedRectangle(Display *dpy, Drawable draw, GC gc, int x, int y,
int w, int h, int ew, int eh);

dpy  specifies the connection to the X server

draw specifies the drawable

gc   specifies the GC

x    specifies the upper left x coordinate

y    specifies the upper left y coordinate

w    specifies the rectangle width

h    specifies the rectangle height

ew   specifies the corner width

eh   specifies the corner height

This function draws a filled rounded rectangle, where x, y, w, h are the
dimensions of the overall rectangle, and ew and eh are the sizes of a bounding
box that the corners are drawn inside of; ew should be no more than half of w,
and eh should be no more than half of h. The current GC fill settings control
all attributes of the fill contents.

XmuDrawLogo(Display *dpy, Drawable drawable, GC gcFore, GC gcBack, int x, int
y, unsigned int width, unsigned int height);

dpy      specifies the connection to the X server

drawable specifies the drawable

gcFore   specifies the foreground GC

gcBack   specifies the background GC

x        specifies the upper left x coordinate

y        specifies the upper left y coordinate

width    specifies the logo width

height   specifies the logo height

This function draws the “official” X Window System logo (Figure 1, “The X Logo”
). The bounding box of the logo in the drawable is given by x, y, width, and
height. The logo itself is filled using gcFore, and the rest of the rectangle
is filled using gcBack.

Figure 1. The X Logo


Pixmap XmuCreateStippledPixmap(Screen *screen, Pixel fore, Pixel back, unsigned
int depth);

screen specifies the screen the pixmap is created on

fore   specifies the foreground pixel value

back   specifies the background pixel value

depth  specifies the depth of the pixmap

This function creates a two pixel by one pixel stippled pixmap of specified
depth on the specified screen. The pixmap is cached so that multiple requests
share the same pixmap. The pixmap should be freed with XmuReleaseStippledPixmap
to maintain correct reference counts.

void XmuReleaseStippledPixmap(Screen *screen, Pixmap pixmap);

screen specifies the screen the pixmap was created on

pixmap specifies the pixmap to free

This function frees a pixmap created with XmuCreateStippledPixmap.

int XmuReadBitmapData(FILE *fstream, unsigned int *width, unsigned int *height,
unsigned char **datap, int *x_hot, int *y_hot);

fstream specifies the stream to read from

width   returns the width of the bitmap

height  returns the height of the bitmap

datap   returns the parsed bitmap data

x_hot   returns the x coordinate of the hotspot

y_hot   returns the y coordinate of the hotspot

This function reads a standard bitmap file description from the specified
stream, and returns the parsed data in a format suitable for passing to 
XCreateBitmapFromData. The return value of the function has the same
interpretation as the return value for XReadBitmapFile.

int XmuReadBitmapDataFromFile(const char *filename, unsigned int *width,
unsigned int *height, unsigned char **datap, int *x_hot, int *y_hot);

fstream specifies the file to read from

width   returns the width of the bitmap

height  returns the height of the bitmap

datap   returns the parsed bitmap data

x_hot   returns the x coordinate of the hotspot

y_hot   returns the y coordinate of the hotspot

This function reads a standard bitmap file description from the specified file,
and returns the parsed data in a format suitable for passing to 
XCreateBitmapFromData. The return value of the function has the same
interpretation as the return value for XReadBitmapFile.

Pixmap XmuLocateBitmapFile(Screen *screen, const char *name, char *srcname, int
srcnamelen, int *widthp, int *heightp, int *xhotp, int *yhotp);

screen     specifies the screen the pixmap is created on

name       specifies the file to read from

srcname    returns the full filename of the bitmap

srcnamelen specifies the length of the srcname buffer

width      returns the width of the bitmap

height     returns the height of the bitmap

xhotp      returns the x coordinate of the hotspot

yhotp      returns the y coordinate of the hotspot

This function reads a file in standard bitmap file format, using 
XReadBitmapFile, and returns the created bitmap. The filename may be absolute,
or relative to the global resource named bitmapFilePath with class
BitmapFilePath. If the resource is not defined, the default value is the build
symbol BITMAPDIR, which is typically "/usr/include/X11/bitmaps". If srcnamelen
is greater than zero and srcname is not NULL, the null terminated filename will
be copied into srcname. The size and hotspot of the bitmap are also returned.

Pixmap XmuCreatePixmapFromBitmap(Display *dpy, Drawable d, Pixmap bitmap,
unsigned int width, unsigned int height, unsigned int depth, unsigned long
fore, unsigned long back);

dpy    specifies the connection to the X server

screen specifies the screen the pixmap is created on

bitmap specifies the bitmap source

width  specifies the width of the pixmap

height specifies the height of the pixmap

depth  specifies the depth of the pixmap

fore   specifies the foreground pixel value

back   specifies the background pixel value

This function creates a pixmap of the specified width, height, and depth, on
the same screen as the specified drawable, and then performs an XCopyPlane from
the specified bitmap to the pixmap, using the specified foreground and
background pixel values. The created pixmap is returned.

Selection Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/StdSel.h> and link against the libXmu library.

Boolean XmuConvertStandardSelection(Widget w, Time time, Atom *selection, Atom
*target, Atom *type, XPointer value, unsigned long *length, int *format);

w         specifies the widget which currently owns the selection

time      specifies the time at which the selection was established

selection this argument is ignored

target    specifies the target type of the selection

type      returns the property type of the converted value

value     returns the converted value

length    returns the number of elements in the converted value

format    returns the size in bits of the elements

This function converts the following standard selections: CLASS, CLIENT_WINDOW,
DECNET_ADDRESS, HOSTNAME, IP_ADDRESS, NAME, OWNER_OS, TARGETS, TIMESTAMP, and
USER. It returns True if the conversion was successful, else it returns False.

Type Converter Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/Converters.h> and link against the libXmu library.

void XmuCvtFunctionToCallback(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     this argument is ignored

num_args this argument is ignored

fromVal  the function to convert

toVal    the place to store the converted value

This function converts a callback procedure to a callback list containing that
procedure, with NULL closure data. To use this converter, include the following
in your widget's ClassInitialize procedure:

XtAddConverter(XtRCallProc, XtRCallback, XmuCvtFunctionToCallback, NULL, 0);


void XmuCvtStringToBackingStore(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     this argument is ignored

num_args this argument must be a pointer to a Cardinal containing the value 0

fromVal  specifies the string to convert

toVal    returns the converted value

This function converts a string to a backing-store integer as defined in <X11/
X.h>. The string "notUseful" converts to NotUseful, "whenMapped" converts to 
WhenMapped, and "always" converts to Always. The string "default" converts to
the value Always + WhenMapped + NotUseful. The case of the string does not
matter. To use this converter, include the following in your widget's
ClassInitialize procedure:

XtAddConverter(XtRString, XtRBackingStore, XmuCvtStringToBackingStore, NULL, 0);


void XmuCvtStringToBitmap(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     the sole argument specifies the Screen on which to create the bitmap

num_args must be the value 1

fromVal  specifies the string to convert

toVal    returns the converted value

This function creates a bitmap (a Pixmap of depth one) suitable for window
manager icons. The string argument is the name of a file in standard bitmap
file format. For the possible filename specifications, see XmuLocateBitmapFile.
To use this converter, include the following in your widget's ClassInitialize
procedure:

static XtConvertArgRec screenConvertArg[] = {
  {XtBaseOffset, (XtPointer)XtOffset(Widget, core.screen), sizeof(Screen *)}
};

XtAddConverter(XtRString, XtRBitmap, XmuCvtStringToBitmap,
                 screenConvertArg, XtNumber(screenConvertArg));


Boolean XmuCvtStringToColorCursor(Display *dpy, XrmValuePtr args, Cardinal
*num_args, XrmValuePtr fromVal, XrmValuePtr toVal, XtPointer *data);

dpy      specifies the display to use for conversion warnings

args     specifies the required conversion arguments

num_args specifies the number of required conversion arguments, which is 4

fromVal  specifies the string to convert

toVal    returns the converted value

data     this argument is ignored

This function converts a string to a Cursor with the foreground and background
pixels specified by the conversion arguments. The string can either be a
standard cursor name formed by removing the “XC_” prefix from any of the cursor
defines listed in Appendix B of the Xlib Manual, a font name and glyph index in
decimal of the form "FONT fontname index [[font] index]", or a bitmap filename
acceptable to XmuLocateBitmapFile. To use this converter, include the following
in the widget ClassInitialize procedure:

static XtConvertArgRec colorCursorConvertArgs[] = {
  {XtWidgetBaseOffset, (XtPointer) XtOffsetOf(WidgetRec, core.screen),
   sizeof(Screen *)},
  {XtResourceString, (XtPointer) XtNpointerColor, sizeof(Pixel)},
  {XtResourceString, (XtPointer) XtNpointerColorBackground, sizeof(Pixel)},
  {XtWidgetBaseOffset, (XtPointer) XtOffsetOf(WidgetRec, core.colormap),
   sizeof(Colormap)}
};


XtSetTypeConverter(XtRString, XtRColorCursor, XmuCvtStringToColorCursor,
                 colorCursorConvertArgs, XtNumber(colorCursorConvertArgs),
                 XtCacheByDisplay, NULL);


The widget must recognize XtNpointerColor and XtNpointerColorBackground as
resources, or specify other appropriate foreground and background resources.
The widget's Realize and SetValues methods must cause the converter to be
invoked with the appropriate arguments when one of the foreground, background,
or cursor resources has changed, or when the window is created, and must assign
the cursor to the window of the widget.

void XmuCvtStringToCursor(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     specifies the required conversion argument, the screen

num_args specifies the number of required conversion arguments, which is 1

fromVal  specifies the string to convert

toVal    returns the converted value

This function converts a string to a Cursor. The string can either be a
standard cursor name formed by removing the “XC_” prefix from any of the cursor
defines listed in Appendix B of the Xlib Manual, a font name and glyph index in
decimal of the form "FONT fontname index [[font] index]", or a bitmap filename
acceptable to XmuLocateBitmapFile. To use this converter, include the following
in your widget's ClassInitialize procedure:

static XtConvertArgRec screenConvertArg[] = {
  {XtBaseOffset, (XtPointer)XtOffsetOf(WidgetRec, core.screen), sizeof(Screen *)}
};

XtAddConverter(XtRString, XtRCursor, XmuCvtStringToCursor,
                 screenConvertArg, XtNumber(screenConvertArg));


void XmuCvtStringToGravity(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     this argument is ignored

num_args this argument must be a pointer to a Cardinal containing the value 0

fromVal  specifies the string to convert

toVal    returns the converted value

This function converts a string to an XtGravity enumeration value. The string
"forget" and a NULL value convert to ForgetGravity, "NorthWestGravity" converts
to NorthWestGravity, the strings "NorthGravity" and "top" convert to 
NorthGravity, "NorthEastGravity" converts to NorthEastGravity, the strings
"West" and "left" convert to WestGravity, "CenterGravity" converts to 
CenterGravity, "EastGravity" and "right" convert to EastGravity,
"SouthWestGravity" converts to SouthWestGravity, "SouthGravity" and "bottom"
convert to SouthGravity, "SouthEastGravity" converts to SouthEastGravity,
"StaticGravity" converts to StaticGravity, and "UnmapGravity" converts to 
UnmapGravity. The case of the string does not matter. To use this converter,
include the following in your widget's class initialize procedure:

XtAddConverter(XtRString, XtRGravity, XmuCvtStringToGravity, NULL, 0);


void XmuCvtStringToJustify(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     this argument is ignored

num_args this argument is ignored

fromVal  specifies the string to convert

toVal    returns the converted value

This function converts a string to an XtJustify enumeration value. The string
"left" converts to XtJustifyLeft, "center" converts to XtJustifyCenter, and
"right" converts to XtJustifyRight. The case of the string does not matter. To
use this converter, include the following in your widget's ClassInitialize
procedure:

XtAddConverter(XtRString, XtRJustify, XmuCvtStringToJustify, NULL, 0);


void XmuCvtStringToLong(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     this argument is ignored

num_args this argument must be a pointer to a Cardinal containing 0

fromVal  specifies the string to convert

toVal    returns the converted value

This function converts a string to an integer of type long. It parses the
string using sscanf with a format of "%ld". To use this converter, include the
following in your widget's ClassInitialize procedure:

XtAddConverter(XtRString, XtRLong, XmuCvtStringToLong, NULL, 0);


void XmuCvtStringToOrientation(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     this argument is ignored

num_args this argument is ignored

fromVal  specifies the string to convert

toVal    returns the converted value

This function converts a string to an XtOrientation enumeration value. The
string "horizontal" converts to XtorientHorizontal and "vertical" converts to 
XtorientVertical. The case of the string does not matter. To use this
converter, include the following in your widget's ClassInitialize procedure:

XtAddConverter(XtRString, XtROrientation, XmuCvtStringToOrientation, NULL, 0);


Boolean XmuCvtStringToShapeStyle(Display *dpy, XrmValue *args, Cardinal
*num_args, XrmValuePtr fromVal, XrmValuePtr toVal, XtPointer *data);

dpy      the display to use for conversion warnings

args     this argument is ignored

num_args this argument is ignored

fromVal  the value to convert from

toVal    the place to store the converted value

data     this argument is ignored

This function converts a string to an integer shape style. The string
"rectangle" converts to XmuShapeRectangle, "oval" converts to XmuShapeOval,
"ellipse" converts to XmuShapeEllipse, and "roundedRectangle" converts to 
XmuShapeRoundedRectangle. The case of the string does not matter. To use this
converter, include the following in your widget's ClassInitialize procedure:

XtSetTypeConverter(XtRString, XtRShapeStyle, XmuCvtStringToShapeStyle,
                     NULL, 0, XtCacheNone, NULL);


Boolean XmuReshapeWidget(Widget w, int shape_style, int corner_width, int
corner_height);

w             specifies the widget to reshape

shape_style   specifies the new shape

corner_width  specifies the width of the rounded rectangle corner

corner_height specified the height of the rounded rectangle corner

This function reshapes the specified widget, using the Shape extension, to a
rectangle, oval, ellipse, or rounded rectangle, as specified by shape_style ( 
XmuShapeRectangle, XmuShapeOval, XmuShapeEllipse, and XmuShapeRoundedRectangle,
respectively). The shape is bounded by the outside edges of the rectangular
extents of the widget. If the shape is a rounded rectangle, corner_width and
corner_height specify the size of the bounding box that the corners are drawn
inside of (see XmuFillRoundedRectangle); otherwise, corner_width and
corner_height are ignored. The origin of the widget within its parent remains
unchanged.

void XmuCvtStringToWidget(XrmValue *args, Cardinal *num_args, XrmValuePtr
fromVal, XrmValuePtr toVal);

args     the sole argument is the parent Widget

num_args this argument must be 1

fromVal  specifies the string to convert

toVal    returns the converted value

This function converts a string to an immediate child widget of the parent
widget passed as an argument. Note that this converter only works for child
widgets that have already been created; there is no lazy evaluation. The string
is first compared against the names of the normal and popup children, and if a
match is found the corresponding child is returned. If no match is found, the
string is compared against the classes of the normal and popup children, and if
a match is found the corresponding child is returned. The case of the string is
significant. To use this converter, include the following in your widget's
ClassInitialize procedure:

static XtConvertArgRec parentCvtArg[] = {
  {XtBaseOffset, (XtPointer)XtOffset(Widget, core.parent), sizeof(Widget)},
};

XtAddConverter(XtRString, XtRWidget, XmuCvtStringToWidget,
                 parentCvtArg, XtNumber(parentCvtArg));


Boolean XmuNewCvtStringToWidget(Display *dpy, XrmValuePtr args, Cardinal
*num_args, XrmValuePtr fromVal, XrmValuePtr toVal, XtPointer *data);

dpy      the display to use for conversion warnings

args     the sole argument is the parent Widget

num_args this argument must be a pointer to a Cardinal containing the value 1

fromVal  specifies the string to convert

toVal    returns the converted value

data     this argument is ignored

This converter is identical in functionality to XmuCvtStringToWidget, except
that it is a new-style converter, allowing the specification of a cache type at
the time of registration. Most widgets will not cache the conversion results,
as the application may dynamically create and destroy widgets, which would
cause cached values to become illegal. To use this converter, include the
following in the widget's class initialize procedure:

static XtConvertArgRec parentCvtArg[] = {
  {XtWidgetBaseOffset, (XtPointer)XtOffsetOf(WidgetRec, core.parent),
   sizeof(Widget)}
};

XtSetTypeConverter(XtRString, XtRWidget, XmuNewCvtStringToWidget,
                   parentCvtArg, XtNumber(parentCvtArg), XtCacheNone, NULL);


Character Set Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/CharSet.h> and link against the libXmu or libXmuu library.

Warning

The functions in this section are deprecated because they don't work in most
locales now supported by X11; most platforms provide alternatives in their
system libraries.

void XmuCopyISOLatin1Lowered(char *dst, const char *src);

dst returns the string copy

src specifies the string to copy

This function copies a null terminated string from src to dst (including the
null), changing all Latin-1 uppercase letters to lowercase. The string is
assumed to be encoded using ISO 8859-1.

Note that like strcpy the caller is responsible for ensuring the size of dst is
at least as large as the size of src.

void XmuNCopyISOLatin1Lowered(char *dst, const char *src, int size);

dst  returns the string copy

src  specifies the string to copy

size maximum number of characters (including the null terminator) to write to
     dst

This function copies up to size - 1 characters of a null terminated string from
src to dst, and terminates it with a null, changing all Latin-1 uppercase
letters to lowercase. The string is assumed to be encoded using ISO 8859-1.

void XmuCopyISOLatin1Uppered(char *dst, const char *src);

dst returns the string copy

src specifies the string to copy

This function copies a null terminated string from src to dst (including the
null), changing all Latin-1 lowercase letters to uppercase. The string is
assumed to be encoded using ISO 8859-1.

Note that like strcpy the caller is responsible for ensuring the size of dst is
at least as large as the size of src.

void XmuNCopyISOLatin1Uppered(char *dst, const char *src, int size);

dst  returns the string copy

src  specifies the string to copy

size maximum number of characters (including the null terminator) to write to
     dst

This function copies up to size - 1 characters of a null terminated string from
src to dst, and terminates it with a null, changing all Latin-1 lowercase
letters to uppercase. The string is assumed to be encoded using ISO 8859-1.

int XmuCompareISOLatin1(const char *first, const char *second);

first  specifies a string to compare

second specifies a string to compare

This function compares two null terminated Latin-1 strings, ignoring case
differences, and returns an integer greater than, equal to, or less than 0,
according to whether first is lexicographically greater than, equal to, or less
than second. The two strings are assumed to be encoded using ISO 8859-1.

Keyboard Event Translation Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/Lookup.h> . and link against the libXmu library.

Warning

The functions in this section are deprecated because they don't work in most
locales now supported by X11; the function XmbLookupString provides a better
alternative.

int XmuLookupLatin1(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is identical to XLookupString, and exists only for naming
symmetry with other functions.

int XmuLookupLatin2(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to
an Latin-2 (ISO 8859-2) string, or to an ASCII control string.

int XmuLookupLatin3(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to
an Latin-3 (ISO 8859-3) string, or to an ASCII control string.

int XmuLookupLatin4(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to
an Latin-4 (ISO 8859-4) string, or to an ASCII control string.

int XmuLookupKana(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to a
string in an encoding consisting of Latin-1 (ISO 8859-1) and ASCII control in
the Graphics Left half (values 0 to 127), and Katakana in the Graphics Right
half (values 128 to 255), using the values from JIS X201-1976.

int XmuLookupJISX0201(XKeyEvent *event, unsigned char *buffer, int nbytes,
KeySym *keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to a
string in the JIS X0201-1976 encoding, including ASCII control.

int XmuLookupArabic(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to a
Latin/Arabic (ISO 8859-6) string, or to an ASCII control string.

int XmuLookupCyrillic(XKeyEvent *event, unsigned char *buffer, int nbytes,
KeySym *keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to a
Latin/Cyrillic (ISO 8859-5) string, or to an ASCII control string.

int XmuLookupGreek(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to a
Latin/Greek (ISO 8859-7) string, or to an ASCII control string.

int XmuLookupHebrew(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to a
Latin/Hebrew (ISO 8859-8) string, or to an ASCII control string.

int XmuLookupAPL(XKeyEvent *event, unsigned char *buffer, int nbytes, KeySym
*keysym, XComposeStatus *status);

event  specifies the key event

buffer returns the translated characters

nbytes specifies the length of the buffer

keysym returns the computed KeySym, or None

status specifies or returns the compose state

This function is similar to XLookupString, except that it maps a key event to
an APL string.

Compound Text Functions

The functions defined in this section are for parsing Compound Text strings,
decomposing them into individual segments. Definitions needed to use these
routines are in the include file <X11/Xmu/Xct.h> and link against the libXmu
library.

Warning

The functions in this section are deprecated because they shift the burden for
recently introduced locale encodings to the application. The use of the 
UTF8_STRING text encoding provides a better alternative.

A Compound Text string is represented as the following type:

        typedef unsigned char *XctString;


XctData XctCreate(const XctString string, int length, XctFlags flags);

string the Compound Text string

length the number of bytes in string

flags  parsing control flags

This function creates an XctData structure for parsing a Compound Text string.
The string need not be null terminated. The following flags are defined to
control parsing of the string:

                      This means that returned segments should contain
                      characters from only one set (C0, C1, GL, GR). When this
XctSingleSetSegments  is requested, XctSegment is never returned by
                      XctNextItem, instead XctC0Segment, XctC1Segment, 
                      XctGlSegment, and XctGRSegment are returned. C0 and C1
                      segments are always returned as singleton characters.

                      This means that if the Compound Text string is from a
                      higher version than this code is implemented to, then
                      syntactically correct but unknown control sequences
XctProvideExtensions  should be returned as XctExtension items by XctNextItem.
                      If this flag is not set, and the Compound Text string
                      version indicates that extensions cannot be ignored, then
                      each unknown control sequence will be reported as an 
                      XctError.

                      This means that if the Compound Text string is from a
                      higher version than this code is implemented to, then
                      unknown C0 characters should be treated as if they were
XctAcceptC0Extensions legal, and returned as C0 characters (regardless of how 
                      XctProvideExtensions is set) by XctNextItem. If this flag
                      is not set, then all unknown C0 characters are treated
                      according to XctProvideExtensions.

                      This means that if the Compound Text string is from a
                      higher version than this code is implemented to, then
                      unknown C1 characters should be treated as if they were
XctAcceptC1Extensions legal, and returned as C1 characters (regardless of how 
                      XctProvideExtensions is set) by XctNextItem. If this flag
                      is not set, then all unknown C1 characters are treated
                      according to XctProvideExtensions.

                      This means that horizontal direction changes should be
                      reported as XctHorizontal items by XctNextItem. If this
                      flag is not set, then direction changes are not returned
XctHideDirection      as items, but the current direction is still maintained
                      and reported for other items. The current direction is
                      given as an enumeration, with the values XctUnspecified, 
                      XctLeftToRight, and XctRightToLeft.

                      This means that XctFree should free the Compound Text
XctFreeString         string that is passed to XctCreate. If this flag is not
                      set, the string is not freed.

                      This means that XctNextItem should translate GR segments
XctShiftMultiGRToGL   on-the-fly into GL segments for the GR sets:
                      GB2312.1980-1, JISX0208.1983-1, and KSC5601.1987-1.

void XctReset(XctData data);

data specifies the Compound Text structure

This function resets the XctData structure to reparse the Compound Text string
from the beginning.

XctResult XctNextItem(XctData data);

data specifies the Compound Text structure

This function parses the next “item” from the Compound Text string. The return
value indicates what kind of item is returned. The item itself, its length, and
the current contextual state, are reported as components of the XctData
structure. XctResult is an enumeration, with the following values:

XctSegment         the item contains some mixture of C0, GL, GR, and C1
                   characters.

XctC0Segment       the item contains only C0 characters.

XctGLSegment       the item contains only GL characters.

XctC1Segment       the item contains only C1 characters.

XctGRSegment       the item contains only GR characters.

XctExtendedSegment the item contains an extended segment.

XctExtension       the item is an unknown extension control sequence.

                   the item indicates a change in horizontal direction or
XctHorizontal      depth. The new direction and depth are recorded in the 
                   XctData structure.

XctEndOfText       The end of the Compound Text string has been reached.

XctError           the string contains a syntactic or semantic error; no
                   further parsing should be performed.

The following state values are stored in the XctData structure:

    XctString           item;           /* the action item */
    unsigned            item_length;    /* length of item in bytes */
    int                 char_size;      /* the number of bytes per character in
                                         * item, with zero meaning variable */
    char                *encoding;      /* the XLFD encoding name for item */
    XctHDirection       horizontal;     /* the direction of item */
    unsigned            horz_depth;     /* the current direction nesting depth */
    char                *GL;            /* the "{I} F" string for the current GL */
    char                *GL_encoding;   /* the XLFD encoding name for the current GL */
    int                 GL_set_size;    /* 94 or 96 */
    int                 GL_char_size;   /* the number of bytes per GL character */
    char                *GR;            /* the "{I} F" string for the current GR */
    char                *GR_encoding;   /* the XLFD encoding name for the current GR */
    int                 GR_set_size;    /* 94 or 96 */
    int                 GR_char_size;   /* number of bytes per GR character */
    char                *GLGR_encoding; /* the XLFD encoding name for the current
                                         *  GL+GR, if known */


void XctFree(XctData data);

data specifies the Compound Text structure

This function frees all data associated with the XctData structure.

CloseDisplay Hook Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/CloseHook.h> and link against the libXmu library.

CloseHook XmuAddCloseDisplayHook(Display *dpy, int ( *func ) (Display *,
XPointer), XPointer arg);

dpy  specifies the connection to the X server

func specifies the function to call at display close

arg  specifies arbitrary data to pass to func

This function adds a callback for the given display. When the display is
closed, the given function will be called with the given display and argument
as:

        (*func)(dpy, arg)


The function is declared to return an int even though the value is ignored,
because some compilers used to have problems with functions returning void.

This routine returns NULL if it was unable to add the callback, otherwise it
returns an opaque handle that can be used to remove or lookup the callback.

Bool XmuRemoveCloseDisplayHook(Display *dpy, CloseHook handle, int ( *func )
(Display *, XPointer), XPointer arg);

dpy    specifies the connection to the X server

handle specifies the callback by id, or NULL

func   specifies the callback by function

arg    specifies the function data to match

This function deletes a callback that has been added with
XmuAddCloseDisplayHook. If handle is not NULL, it specifies the callback to
remove, and the func and arg parameters are ignored. If handle is NULL, the
first callback found to match the specified func and arg will be removed.
Returns True if a callback was removed, else returns False.

Bool XmuLookupCloseDisplayHook(Display *dpy, CloseHook handle, int ( *func )
(Display *, XPointer), XPointer arg);

dpy    specifies the connection to the X server

handle specifies the callback by id, or NULL

func   specifies the callback by function

arg    specifies the function data to match

This function determines if a callback is installed. If handle is not NULL, it
specifies the callback to look for, and the func and arg parameters are
ignored. If handle is NULL, the function will look for any callback for the
specified func and arg. Returns True if a matching callback exists, else
returns False.

Display Queue Functions

To use the functions and types defined in this section, you should include the
header file <X11/Xmu/DisplayQue.h> and link against the libXmu library.
DisplayQue.h defines the following types:

typedef int (*XmuCloseDisplayQueueProc)(XmuDisplayQueue *queue,
                                        XmuDisplayQueueEntry *entry);

typedef int (*XmuFreeDisplayQueueProc)(XmuDisplayQueue *queue);

typedef struct _XmuDisplayQueueEntry {
        struct _XmuDisplayQueueEntry *prev, *next;
        Display *display;
        CloseHook closehook;
        XPointer data;
} XmuDisplayQueueEntry;

typedef struct _XmuDisplayQueue {
        int nentries;
        XmuDisplayQueueEntry *head, *tail;
        XmuCloseDisplayQueueProc closefunc;
        XmuFreeDisplayQueueProc freefunc;
        XPointer data;
} XmuDisplayQueue;


XmuDisplayQueue *XmuDQCreate(XmuCloseDisplayQueueProc closefunc,
XmuFreeDisplayQueueProc freefunc, XPointer data);

closefunc specifies the close function

freefunc  specifies the free function

data      specifies private data for the functions

This function creates and returns an empty XmuDisplayQueue (which is really
just a set of displays, but is called a queue for historical reasons). The
queue is initially empty, but displays can be added using XmuAddDisplay. The
data value is simply stored in the queue for use by the closefunc and freefunc
callbacks. Whenever a display in the queue is closed using XCloseDisplay, the
closefunc (if non-NULL) is called with the queue and the display's
XmuDisplayQueueEntry as follows:

        (*closefunc)(queue, entry)


The freefunc (if non-NULL) is called whenever the last display in the queue is
closed, as follows:

        (*freefunc)(queue)


The application is responsible for actually freeing the queue, by calling
XmuDQDestroy.

XmuDisplayQueueEntry *XmuDQAddDisplay(XmuDisplayQueue *q, Display *dpy,
XPointer data);

q    specifies the queue

dpy  specifies the display to add

data specifies private data for the free function

This function adds the specified display to the queue. If successful, the queue
entry is returned, otherwise NULL is returned. The data value is simply stored
in the queue entry for use by the queue's freefunc callback. This function does
not attempt to prevent duplicate entries in the queue; the caller should use
XmuDQLookupDisplay to determine if a display has already been added to a queue.

XmuDisplayQueueEntry *XmuDQLookupDisplay(XmuDisplayQueue *q, Display *dpy);

q   specifies the queue

dpy specifies the display to lookup

This function returns the queue entry for the specified display, or NULL if the
display is not in the queue.

XmuDQNDisplays(q);

This macro returns the number of displays in the specified queue.

Bool XmuDQRemoveDisplay(XmuDisplayQueue *q, Display *dpy);

q   specifies the queue

dpy specifies the display to remove

This function removes the specified display from the specified queue. No
callbacks are performed. If the display is not found in the queue, False is
returned, otherwise True is returned.

Bool XmuDQDestroy(XmuDisplayQueue *q, Bool docallbacks);

q           specifies the queue to destroy

docallbacks specifies whether close functions should be called

This function releases all memory associated with the specified queue. If
docallbacks is True, then the queue's closefunc callback (if non-NULL) is first
called for each display in the queue, even though XCloseDisplay is not called
on the display.

Toolkit Convenience Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/Initer.h> and link against the libXmu library.

void XmuAddInitializer(void ( *func ) (XtAppContext, XPointer), XPointer data);

func specifies the procedure to register

data specifies private data for the procedure

This function registers a procedure, to be invoked the first time
XmuCallInitializers is called on a given application context. The procedure is
called with the application context and the specified data:

        (*func)(app_con, data)


void XmuCallInitializers(XtAppContext app_con);

app_con specifies the application context to initialize

This function calls each of the procedures that have been registered with
XmuAddInitializer, if this is the first time the application context has been
passed to XmuCallInitializers. Otherwise, this function does nothing.

Standard Colormap Functions

To use the functions defined in this section, you should include the header
file <X11/Xmu/StdCmap.h> and link against the libXmu library.

Status XmuAllStandardColormaps(Display *dpy);

dpy specifies the connection to the X server

To create all of the appropriate standard colormaps for every visual of every
screen on a given display, use XmuAllStandardColormaps.

This function defines and retains as permanent resources all standard colormaps
which are meaningful for the visuals of each screen of the display. It returns
0 on failure, non-zero on success. If the property of any standard colormap is
already defined, this function will redefine it.

This function is intended to be used by window managers or a special client at
the start of a session.

The standard colormaps of a screen are defined by properties associated with
the screen's root window. The property names of standard colormaps are
predefined, and each property name except RGB_DEFAULT_MAP may describe at most
one colormap.

The standard colormaps are: RGB_BEST_MAP, RGB_RED_MAP, RGB_GREEN_MAP, 
RGB_BLUE_MAP, RGB_DEFAULT_MAP, and RGB_GRAY_MAP. Therefore a screen may have at
most 6 standard colormap properties defined.

A standard colormap is associated with a particular visual of the screen. A
screen may have multiple visuals defined, including visuals of the same class
at different depths. Note that a visual id might be repeated for more than one
depth, so the visual id and the depth of a visual identify the visual. The
characteristics of the visual will determine which standard colormaps are
meaningful under that visual, and will determine how the standard colormap is
defined. Because a standard colormap is associated with a specific visual,
there must be a method of determining which visuals take precedence in defining
standard colormaps.

The method used here is: for the visual of greatest depth, define all standard
colormaps meaningful to that visual class, according to this order of
(descending) precedence: DirectColor; PseudoColor; TrueColor and GrayScale; and
finally StaticColor and StaticGray.

This function allows success, on a per screen basis. For example, if a map on
screen 1 fails, the maps on screen 0, created earlier, will remain. However,
none on screen 1 will remain. If a map on screen 0 fails, none will remain.

See XmuVisualStandardColormaps for which standard colormaps are meaningful
under these classes of visuals.

Status XmuVisualStandardColormaps(Display *dpy, int screen, VisualID visualid,
unsigned int depth, Bool replace, Bool retain);

dpy      specifies the connection to the X server

screen   specifies the screen of the display

visualid specifies the visual type

depth    specifies the visual depth

replace  specifies whether or not to replace

retain   specifies whether or not to retain

To create all of the appropriate standard colormaps for a given visual on a
given screen, use XmuVisualStandardColormaps.

This function defines all appropriate standard colormap properties for the
given visual. If replace is True, any previous definition will be removed. If
retain is True, new properties will be retained for the duration of the server
session. This function returns 0 on failure, non-zero on success. On failure,
no new properties will be defined, but old ones may have been removed if
replace was True.

Not all standard colormaps are meaningful to all visual classes. This routine
will check and define the following properties for the following classes,
provided that the size of the colormap is not too small. For DirectColor and 
PseudoColor: RGB_DEFAULT_MAP, RGB_BEST_MAP, RGB_RED_MAP, RGB_GREEN_MAP, 
RGB_BLUE_MAP, and RGB_GRAY_MAP. For TrueColor and StaticColor: RGB_BEST_MAP.
For GrayScale and StaticGray: RGB_GRAY_MAP.

Status XmuLookupStandardColormap(Display *dpy, int screen, VisualID visualid,
unsigned int depth, Atom property, Bool replace, Bool retain);

dpy      specifies the connection to the X server

screen   specifies the screen of the display

visualid specifies the visual type

depth    specifies the visual depth

property specifies the standard colormap property

replace  specifies whether or not to replace

retain   specifies whether or not to retain

To create a standard colormap if one does not currently exist, or replace the
currently existing standard colormap, use XmuLookupStandardColormap.

Given a screen, a visual, and a property, this function will determine the best
allocation for the property under the specified visual, and determine the
whether to create a new colormap or to use the default colormap of the screen.

If replace is True, any previous definition of the property will be replaced.
If retain is True, the property and the colormap will be made permanent for the
duration of the server session. However, pre-existing property definitions
which are not replaced cannot be made permanent by a call to this function; a
request to retain resources pertains to newly created resources.

This function returns 0 on failure, non-zero on success. A request to create a
standard colormap upon a visual which cannot support such a map is considered a
failure. An example of this would be requesting any standard colormap property
on a monochrome visual, or, requesting an RGB_BEST_MAP on a display whose
colormap size is 16.

Status XmuGetColormapAllocation(XVisualInfo *vinfo, Atom property, unsigned
long *red_max, unsigned long *green_max, unsigned long *blue_max);

vinfo     specifies visual information for a chosen visual

property  specifies one of the standard colormap property names

red_max   returns maximum red value

green_max returns maximum green value

blue_max  returns maximum blue value

To determine the best allocation of reds, greens, and blues in a standard
colormap, use XmuGetColormapAllocation.

XmuGetColormapAllocation returns 0 on failure, non-zero on success. It is
assumed that the visual is appropriate for the colormap property.

XStandardColormap *XmuStandardColormap(Display *dpy, int screen, VisualID
visualid, unsigned int depth, Atom property, Colormap cmap, unsigned long
red_max, unsigned long green_max, unsigned long blue_max);

dpy       specifies the connection to the X server

screen    specifies the screen of the display

visualid  specifies the visual type

depth     specifies the visual depth

property  specifies the standard colormap property

cmap      specifies the colormap ID, or None

red_max   specifies the red allocation

green_max specifies the green allocation

blue_max  specifies the blue allocation

To create any one standard colormap, use XmuStandardColormap.

This function creates a standard colormap for the given screen, visualid, and
visual depth, with the given red, green, and blue maximum values, with the
given standard property name. Upon success, it returns a pointer to an
XStandardColormap structure which describes the newly created colormap. Upon
failure, it returns NULL. If cmap is the default colormap of the screen, the
standard colormap will be defined on the default colormap; otherwise a new
colormap is created.

Resources created by this function are not made permanent; that is the caller's
responsibility.

Status XmuCreateColormap(Display *dpy, XStandardColormap *colormap);

dpy      specifies the connection under which the map is created

colormap specifies the map to be created

To create any one colormap which is described by an XStandardColormap
structure, use XmuCreateColormap.

This function returns 0 on failure, and non-zero on success. The base_pixel of
the colormap is set on success. Resources created by this function are not made
permanent. No argument error checking is provided; use at your own risk.

All colormaps are created with read-only allocations, with the exception of
read-only allocations of colors which fail to return the expected pixel value,
and these are individually defined as read/write allocations. This is done so
that all the cells defined in the colormap are contiguous, for use in image
processing. This typically happens with White and Black in the default map.

Colormaps of static visuals are considered to be successfully created if the
map of the static visual matches the definition given in the standard colormap
structure.

void XmuDeleteStandardColormap(Display *dpy, Screen *screen, Atom property);

dpy      specifies the connection to the X server

screen   specifies the screen of the display

property specifies the standard colormap property

To remove any standard colormap property, use XmuDeleteStandardColormap. This
function will remove the specified property from the specified screen,
releasing any resources used by the colormap(s) of the property, if possible.

Widget Description Functions

The functions defined in this section are for building a description of the
structure of and resources associated with a hierarchy of widget classes. This
package is typically used by applications that wish to manipulate the widget
set itself.

The definitions needed to use these interfaces are in the header file <X11/Xmu/
WidgetNode.h> . To call these functions, you need to link against the libXmu
library. The following function must be called before any of the others
described below:

void XmuWnInitializeNodes(XmuWidgetNode *node_array, int num_nodes);

node_array specifies a list of widget classes, in alphabetical order

num_nodes  specifies the number of widget classes in the node array

To determine the resources provided by a widget class or classes, use

void XmuWnFetchResources(XmuWidgetNode *node, Widget toplevel, XmuWidgetNode
*top_node);

node     specifies the widget class for which resources should be obtained.

         specifies the widget that should be used for creating an instance of
toplevel node from which resources are extracted. This is typically the value
         returned by XtAppInitialize.

         specifies the ancestor of node that should be treated as the root of
top_node the widget inheritance tree (used in determining which ancestor
         contributed which resources).

Each widget class inherits the resources of its parent. To count the number of
resources contributed by a particular widget class, use:

int XmuWnCountOwnedResources(XmuWidgetNode *node, XmuWidgetNode *owner_node,
Bool constraints);

node        specifies the widget class whose resources are being examined.

owner_node  specifies the widget class of the ancestor of node whose
            contributions are being counted.

constraints specifies whether or not to count constraint resources or normal
            resources.

This routine returns the number of resources contributed (or “owned”) by the
specified widget class.

XmuWidgetNode *XmuWnNameToNode(XmuWidgetNode *node_list, int num_nodes, char
*name);

node_list specifies a list of widget nodes

num_nodes specifies the number of nodes in the list

name      specifies the name of the widget class in the node list to search for

This function returns the WidgetNode in the list that matches the given widget
name or widget class name. If no match is found, it returns NULL.

Participation in the Editres Protocol

To participate in the editres protocol, applications which are not based on the
Athena widget set should include the header file <X11/Xmu/Editres.h> and link
against the libXmu library.

To participate in the editres protocol, Xt applications which do not rely on
the Athena widget set should register the editres protocol handler on each
shell widget in the application, specifying an event mask of 0, nonmaskable
events, and client data as NULL:

XtAddEventHandler(shell, (EventMask) 0, True, _XEditResCheckMessages, NULL);


Index

, Atom Functions, Atom Functions, Atom Functions, Atom Functions, Atom
Functions, Error Handler Functions

A

Atom, Atom Functions

B

backing-store, Type Converter Functions
bitmapFilePath, Graphics Functions

C

colormaps
    standard, Standard Colormap Functions
Cursor, Type Converter Functions, Type Converter Functions

E

editres, Participation in the Editres Protocol

P

pkg-config, Introduction

S

Shape extension, Type Converter Functions

W

window manager icons, Type Converter Functions
WM_STATE, Window Utility Functions

X

X11/Xmu/Atoms.h, Atom Functions
X11/Xmu/CharSet.h, Character Set Functions
X11/Xmu/CloseHook.h, CloseDisplay Hook Functions
X11/Xmu/Converters.h, Type Converter Functions
X11/Xmu/CurUtil.h, Cursor Utility Functions
X11/Xmu/DisplayQue.h, Display Queue Functions
X11/Xmu/Drawing.h, Graphics Functions
X11/Xmu/Editres.h, Participation in the Editres Protocol
X11/Xmu/Error.h, Error Handler Functions
X11/Xmu/Initer.h, Toolkit Convenience Functions
X11/Xmu/Lookup.h, Keyboard Event Translation Functions
X11/Xmu/StdCmap.h, Standard Colormap Functions
X11/Xmu/StdSel.h, Selection Functions
X11/Xmu/SysUtil.h, System Utility Functions
X11/Xmu/WidgetNode.h, Widget Description Functions
X11/Xmu/WinUtil.h, Window Utility Functions
X11/Xmu/Xct.h, Compound Text Functions
XctCreate, Compound Text Functions
XctData, Compound Text Functions
XctNextItem, Compound Text Functions
XctReset, Compound Text Functions
XGetWMNormalHints, Window Utility Functions
XmuAddCloseDisplayHook, CloseDisplay Hook Functions
XmuAddInitializer, Toolkit Convenience Functions
XmuAllStandardColormaps, Standard Colormap Functions
XmuCallInitializers, Toolkit Convenience Functions
XmuClientWindow, Window Utility Functions
XmuCompareISOLatin1, Character Set Functions
XmuConvertStandardSelection, Selection Functions
XmuCopyISOLatin1Lowered, Character Set Functions
XmuCopyISOLatin1Uppered, Character Set Functions
XmuCreateColormap, Standard Colormap Functions
XmuCreatePixmapFromBitmap, Graphics Functions
XmuCreateStippledPixmap, Graphics Functions
XmuCursorNameToIndex, Cursor Utility Functions
XmuCvtFunctionToCallback, Type Converter Functions
XmuCvtStringToBackingStore, Type Converter Functions
XmuCvtStringToBitmap, Type Converter Functions
XmuCvtStringToColorCursor, Type Converter Functions
XmuCvtStringToCursor, Type Converter Functions
XmuCvtStringToGravity, Type Converter Functions
XmuCvtStringToJustify, Type Converter Functions
XmuCvtStringToLong, Type Converter Functions
XmuCvtStringToOrientation, Type Converter Functions
XmuCvtStringToShapeStyle, Type Converter Functions
XmuCvtStringToWidget, Type Converter Functions
XmuDeleteStandardColormap, Standard Colormap Functions
XmuDisplayQueue, Display Queue Functions
XmuDQAddDisplay, Display Queue Functions
XmuDQCreate, Display Queue Functions
XmuDQDestroy, Display Queue Functions
XmuDQLookupDisplay, Display Queue Functions
XmuDQNDisplays, Display Queue Functions
XmuDQRemoveDisplay, Display Queue Functions
XmuDrawLogo, Graphics Functions
XmuDrawRoundedRectangle, Graphics Functions
XmuFillRoundedRectangle, Graphics Functions
XmuGetColormapAllocation, Standard Colormap Functions
XmuGetHostname, System Utility Functions
XmuLocateBitmapFile, Graphics Functions
XmuLookupAPL, Keyboard Event Translation Functions
XmuLookupArabic, Keyboard Event Translation Functions
XmuLookupCloseDisplayHook, CloseDisplay Hook Functions
XmuLookupCyrillic, Keyboard Event Translation Functions
XmuLookupGreek, Keyboard Event Translation Functions
XmuLookupHebrew, Keyboard Event Translation Functions
XmuLookupJISX0201, Keyboard Event Translation Functions
XmuLookupKana, Keyboard Event Translation Functions
XmuLookupLatin1, Keyboard Event Translation Functions
XmuLookupLatin2, Keyboard Event Translation Functions
XmuLookupLatin3, Keyboard Event Translation Functions
XmuLookupLatin4, Keyboard Event Translation Functions
XmuLookupStandardColormap, Standard Colormap Functions
XmuNCopyISOLatin1Lowered, Character Set Functions
XmuNCopyISOLatin1Uppered, Character Set Functions
XmuNewCvtStringToWidget, Type Converter Functions
XmuReadBitmapData, Graphics Functions
XmuReadBitmapDataFromFile, Graphics Functions
XmuReleaseStippledPixmap, Graphics Functions
XmuRemoveCloseDisplayHook, CloseDisplay Hook Functions
XmuReshapeWidget, Type Converter Functions
XmuScreenOfWindow, Window Utility Functions
XmuSimpleErrorHandler, Error Handler Functions
XmuSnprintf, System Utility Functions
XmuStandardColormap, Standard Colormap Functions
XmuUpdateMapHints, Window Utility Functions
XmuVisualStandardColormaps, Standard Colormap Functions
XmuWnNameToNode, Widget Description Functions
XSetWMNormalHints, Window Utility Functions
XtGravity, Type Converter Functions
XtJustify, Type Converter Functions
XtOrientation, Type Converter Functions

