- Qt 6.4
- Qt GUI
- C++ Classes
- QPdfWriter
- Qt 6.4.2 Reference Documentation

# QPdfWriter Class

The QPdfWriter class is a class to generate PDFs that can be used as a paint device. More...

Header: | #include <QPdfWriter>
CMake: | find_package(Qt6 REQUIRED COMPONENTS Gui) target_link_libraries(mytarget PRIVATE Qt6::Gui)
qmake: | QT += gui
Inherits: | QObject and QPagedPaintDevice

- List of all members, including inherited members

## Public Functions

| QPdfWriter(QIODevice *device)
| QPdfWriter(const QString &filename)
virtual | ~QPdfWriter()
void | addFileAttachment(const QString &fileName, const QByteArray &data, const QString &mimeType = QString())
QString | creator() const
QByteArray | documentXmpMetadata() const
QPagedPaintDevice::PdfVersion | pdfVersion() const
int | resolution() const
void | setCreator(const QString &creator)
void | setDocumentXmpMetadata(const QByteArray &xmpMetadata)
void | setPdfVersion(QPagedPaintDevice::PdfVersion version)
void | setResolution(int resolution)
void | setTitle(const QString &title)
QString | title() const

## Reimplemented Public Functions

virtual bool | newPage() override

## Reimplemented Protected Functions

virtual QPaintEngine * | paintEngine() const override

## Detailed Description

QPdfWriter generates PDF out of a series of drawing commands using QPainter. The newPage() method can be used to create several pages.

## Member Function Documentation

### QPdfWriter::QPdfWriter(QIODevice *device)

Constructs a PDF writer that will write the pdf to device.

### QPdfWriter::QPdfWriter(const QString &filename)

Constructs a PDF writer that will write the pdf to filename.

### `[virtual]` QPdfWriter::~QPdfWriter()

Destroys the pdf writer.

### `[since 5.15]` void QPdfWriter::addFileAttachment(const QString &fileName, const QByteArray &data, const QString &mimeType = QString())

Adds fileName attachment to the PDF with (optional) mimeType. data contains the raw file data to embed into the PDF file.

This function was introduced in Qt 5.15.

### QString QPdfWriter::creator() const

Returns the creator of the document.

See also setCreator().

### `[since 5.15]` QByteArray QPdfWriter::documentXmpMetadata() const

Gets the document metadata, as it was provided with a call to setDocumentXmpMetadata. It will not return the default metadata.

This function was introduced in Qt 5.15.

See also setDocumentXmpMetadata().

### `[override virtual]` bool QPdfWriter::newPage()

Reimplements: QPagedPaintDevice::newPage().

### `[override virtual protected]` QPaintEngine *QPdfWriter::paintEngine() const

Reimplements: QPaintDevice::paintEngine() const.

### `[since 5.10]` QPagedPaintDevice::PdfVersion QPdfWriter::pdfVersion() const

Returns the PDF version for this writer. The default is `PdfVersion_1_4`.

This function was introduced in Qt 5.10.

See also setPdfVersion().

### `[since 5.3]` int QPdfWriter::resolution() const

Returns the resolution of the PDF in DPI.

This function was introduced in Qt 5.3.

See also setResolution().

### void QPdfWriter::setCreator(const QString &creator)

Sets the creator of the document to creator.

See also creator().

### `[since 5.15]` void QPdfWriter::setDocumentXmpMetadata(const QByteArray &xmpMetadata)

Sets the document metadata. This metadata is not influenced by the setTitle / setCreator methods, so is up to the user to keep it consistent. xmpMetadata contains XML formatted metadata to embed into the PDF file.

This function was introduced in Qt 5.15.

See also documentXmpMetadata().

### `[since 5.10]` void QPdfWriter::setPdfVersion(QPagedPaintDevice::PdfVersion version)

Sets the PDF version for this writer to version.

If version is the same value as currently set then no change will be made.

This function was introduced in Qt 5.10.

See also pdfVersion().

### `[since 5.3]` void QPdfWriter::setResolution(int resolution)

Sets the PDF resolution in DPI.

This setting affects the coordinate system as returned by, for example QPainter::viewport().

This function was introduced in Qt 5.3.

See also resolution().

### void QPdfWriter::setTitle(const QString &title)

Sets the title of the document being created to title.

See also title().

### QString QPdfWriter::title() const

Returns the title of the document.

See also setTitle().