Provided by: libxext-dev_1.3.3-1_amd64
XcupGetReservedColormapEntries - list colormap entries reserved by the system
cc [ flag ... ] file ... -lXext [ library ... ] #include <X11/extensions/Xcup.h> Status XcupGetReservedColormapEntries(Display *display, int screen, XColor **colors_out, int *ncolors);
display Specifies the connection to the X server. screen Screen number on the host server. colors_out Returns the values reserved by the server. ncolors Returns the number of items in colors_out.
The XcupGetReservedColormapEntries function returns a list of colormap entries (pixels) that are reserved by the system. This list will, at a minimum, contain entries for the BlackPixel and WhitePixel of the specified screen. Use XFree to free colors_out. To minimize colormap flash, an application which installs its own private colormap should query the special colors by calling XCupGetReservedColormapEntries, and can then store those entries (in the proper location) in its private colormap using XCupStoreColors.
XcupQueryVersion(3Xext), XcupStoreColors(3Xext), XFree(3X11), Colormap Utilization Policy and Extension