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