1. NAME

BlackPixelOfScreen, WhitePixelOfScreen, CellsOfScreen, DefaultColormapOfScreen, DefaultDepthOfScreen, DefaultGCOfScreen, DefaultVisualOfScreen, DoesBackingStore, DoesSaveUnders, DisplayOfScreen, XScreenNumberOfScreen, EventMaskOfScreen, HeightOfScreen, HeightMMOfScreen, MaxCmapsOfScreen, MinCmapsOfScreen, PlanesOfScreen, RootWindowOfScreen, WidthOfScreen, WidthMMOfScreen - screen information functions and macros

2. SYNTAX

unsigned long BlackPixelOfScreen(Screen *screen); unsigned long WhitePixelOfScreen(Screen *screen); int CellsOfScreen(Screen *screen); Colormap DefaultColormapOfScreen(Screen *screen); int DefaultDepthOfScreen(Screen *screen); GC DefaultGCOfScreen(Screen *screen); Visual *DefaultVisualOfScreen(Screen *screen); int DoesBackingStore(Screen *screen); Bool DoesSaveUnders(Screen *screen); Display *DisplayOfScreen(Screen *screen); int XScreenNumberOfScreen(Screen *screen); long EventMaskOfScreen(Screen *screen); int HeightOfScreen(Screen *screen); int HeightMMOfScreen(Screen *screen); int MaxCmapsOfScreen(Screen *screen); int MinCmapsOfScreen(Screen *screen); int PlanesOfScreen(Screen *screen); Window RootWindowOfScreen(Screen *screen); int WidthOfScreen(Screen *screen); int WidthMMOfScreen(Screen *screen);

3. ARGUMENTS

screen 1i Specifies the appropriate .ZN Screen structure.

4. DESCRIPTION

The .ZN BlackPixelOfScreen macro returns the black pixel value of the specified screen.

The .ZN WhitePixelOfScreen macro returns the white pixel value of the specified screen.

The .ZN CellsOfScreen macro returns the number of colormap cells in the default colormap of the specified screen.

The .ZN DefaultColormapOfScreen macro returns the default colormap of the specified screen.

The .ZN DefaultDepthOfScreen macro returns the default depth of the root window of the specified screen.

The .ZN DefaultGCOfScreen macro returns the default GC of the specified screen, which has the same depth as the root window of the screen.

The .ZN DefaultVisualOfScreen macro returns the default visual of the specified screen.

The .ZN DoesBackingStore macro returns .ZN WhenMapped , .ZN NotUseful , or .ZN Always , which indicate whether the screen supports backing stores.

The .ZN DoesSaveUnders macro returns a Boolean value indicating whether the screen supports save unders.

The .ZN DisplayOfScreen macro returns the display of the specified screen.

The .ZN XScreenNumberOfScreen function returns the screen index number of the specified screen.

The .ZN EventMaskOfScreen macro returns the root event mask of the root window for the specified screen at connection setup.

The .ZN HeightOfScreen macro returns the height of the specified screen.

The .ZN HeightMMOfScreen macro returns the height of the specified screen in millimeters.

The .ZN MaxCmapsOfScreen macro returns the maximum number of installed colormaps supported by the specified screen.

The .ZN MinCmapsOfScreen macro returns the minimum number of installed colormaps supported by the specified screen.

The .ZN PlanesOfScreen macro returns the number of planes in the root window of the specified screen.

The .ZN RootWindowOfScreen macro returns the root window of the specified screen.

The .ZN WidthOfScreen macro returns the width of the specified screen.

The .ZN WidthMMOfScreen macro returns the width of the specified screen in millimeters.

5. SEE ALSO