[Overview][Constants][Types][Procedures and functions][Variables][Index] | Reference for unit 'Graph' (#rtl)

# Reference for unit 'Graph': Variables

`Circle` |  | Draw a complete circle
`ClearViewPort` |  | Clear the current viewport
`DirectPutPixel` |  | Hook to directly draw a pixel on the screen.
`GetBkColor` |  | Return current background color
`GetImage` |  | Return a copy of a screen area
`GetPixel` |  | Return color of pixel
`GetRGBPalette` |  | Hook to set a RGB palette entries.
`GetScanLine` |  | Hook to get a scan line from the screen.
`GraphFreeMemPtr` |  | Hook to free heap memory.
`GraphGetMemPtr` |  | Hook to get heap memory
`HLine` |  | Hook to draw a solid horizontal line
`ImageSize` |  | Return size to store image
`InternalEllipse` |  | Hook to draw an ellipse
`Line` |  | Draw a line between 2 points
`OutTextXY` |  | Write text on the screen on given position
`PatternLine` |  | Hook to draw a patterned line
`PutImage` |  | Draw an in-memory image to the screen
`PutPixel` |  | Draw a pixel on the screen
`RestoreVideoState` |  | Hook to restore a saved video mode
`SaveVideoState` |  | Hook to save the current video state
`SetActivePage` |  | Set active graphical page
`SetAllPalette` |  | Specify a complete new palette
`SetBkColor` |  | Set background drawing color
`SetRGBPalette` |  | Set palette entry using RGB value
`SetVisualPage` |  | Set video page which is displayed.
`VLine` |  | Hook to draw a solid vertical line