NAME

       XInstallColormap, XUninstallColormap, XListInstalledColormaps - control colormaps

SYNTAX

       int XInstallColormap(Display *display, Colormap colormap);

       int XUninstallColormap(Display *display, Colormap colormap);

       Colormap *XListInstalledColormaps(Display *display, Window w, int *num_return);

ARGUMENTS

       colormap  Specifies the colormap.

       display   Specifies the connection to the X server.

       num_return
                 Returns the number of currently installed colormaps.

       w         Specifies the window that determines the screen.

DESCRIPTION

       The  XInstallColormap  function installs the specified colormap for its associated screen.
       All windows associated with this colormap  immediately  display  with  true  colors.   You
       associated  the windows with this colormap when you created them by calling XCreateWindow,
       XCreateSimpleWindow, XChangeWindowAttributes, or XSetWindowColormap.

       If the specified colormap is not already an installed colormap, the X server  generates  a
       ColormapNotify  event on each window that has that colormap.  In addition, for every other
       colormap that is installed as a result  of  a  call  to  XInstallColormap,  the  X  server
       generates a ColormapNotify event on each window that has that colormap.

       XInstallColormap can generate a BadColor error.

       The  XUninstallColormap function removes the specified colormap from the required list for
       its screen.  As a result, the specified colormap might be uninstalled, and  the  X  server
       might implicitly install or uninstall additional colormaps.  Which colormaps get installed
       or uninstalled is server dependent except that the required list must remain installed.

       If the specified colormap becomes uninstalled, the X  server  generates  a  ColormapNotify
       event  on  each window that has that colormap.  In addition, for every other colormap that
       is installed or uninstalled as a result of a call  to  XUninstallColormap,  the  X  server
       generates a ColormapNotify event on each window that has that colormap.

       XUninstallColormap can generate a BadColor error.

       The  XListInstalledColormaps  function returns a list of the currently installed colormaps
       for the screen of the specified window.  The order of the colormaps in  the  list  is  not
       significant  and  is no explicit indication of the required list.  When the allocated list
       is no longer needed, free it by using XFree.

       XListInstalledColormaps can generate a BadWindow error.

DIAGNOSTICS

       BadColor  A value for a Colormap argument does not name a defined Colormap.

       BadWindow A value for a Window argument does not name a defined Window.

SEE ALSO

       XChangeWindowAttributes(3), XCreateColormap(3), XCreateWindow(3), XFree(3)
       Xlib - C Language X Interface