XStoreColors
Syntax
XStoreColors(display, colormap, color, ncolors)
Display *display;
Colormap colormap;
XColor color[];
int ncolors;
Arguments
| display
| Specifies the connection to the X server.
|
| colormap
| Specifies the colormap.
|
| color
| Specifies an array of color definition structures to be stored.
|
| ncolors
|
Specifies the number of
XColor
structures in the color definition array.
|
Description
The
XStoreColors()
function changes the colormap entries of the pixel values
specified in the pixel members of the
XColor
structures.
You specify which color components are to be changed by setting
DoRed ,
DoGreen ,
and/or
DoBlue
in the flags member of the
XColor
structures.
If the colormap is an installed map for its screen, the
changes are visible immediately.
XStoreColors()
changes the specified pixels if they are allocated writable in the colormap
by any client, even if one or more pixels generates an error.
If a specified pixel is not a valid index into the colormap, a
BadValue
error results.
If a specified pixel either is unallocated or is allocated read-only, a
BadAccess
error results.
If more than one pixel is in error,
the one that gets reported is arbitrary.
XStoreColors()
can generate
BadAccess ,
BadColor ,
and
BadValue
errors.
Diagnostics
| BadAccess
| A client attempted to free a color map entry that
it did not already allocate.
|
| BadAccess
| A client attempted to store into a read-only color
map entry.
|
| BadColor
| A value for a Colormap argument does not name a
defined Colormap.
|
| BadValue
| Some numeric value falls outside the range of values accepted by the request.
Unless a specific range is specified for an argument, the full range defined
by the argument's type is accepted. Any argument defined as a set of
alternatives can generate this error.
|
See also
XAllocColor(),
XCreateColormap(),
XQueryColor(),
XStoreColor(),
XStoreColors(),
XStoreNamedColor(),
"Modifying and Querying Colormap Cells".
Christophe Tronche, ch@tronche.com