XStoreColors(3)

NAME

       XStoreColors, XStoreColor, XStoreNamedColor - set colors

SYNTAX

       int XStoreColors(Display *display, Colormap colormap, XColor color[],
              int ncolors);

       int XStoreColor(Display *display, Colormap colormap, XColor *color);

       int XStoreNamedColor(Display *display, Colormap colormap, char *color,
              unsigned long pixel, int flags);

ARGUMENTS

       color     Specifies the pixel and RGB values or the color name string
                 (for example, red).

       color     Specifies an array of color definition structures to be
                 stored.

       colormap  Specifies the colormap.

       display   Specifies the connection to the X server.

       flags     Specifies which red, green, and blue components are set.

       ncolors   Specifies the number of XColor structures in the color defi-
                 nition array.

       pixel     Specifies the entry in the colormap.

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.

       The XStoreColor function changes the colormap entry of the pixel value
       specified in the pixel member of the XColor structure.  You specified
       this value in the pixel member of the XColor structure.  This pixel
       value must be a read/write cell and a valid index into the colormap.
       If a specified pixel is not a valid index into the colormap, a BadValue
       error results.  XStoreColor also changes the red, green, and/or blue
       color components.  You specify which color components are to be changed
       by setting DoRed, DoGreen, and/or DoBlue in the flags member of the
       XColor structure.  If the colormap is an installed map for its screen,
       the changes are visible immediately.

       XStoreColor can generate BadAccess, BadColor, and BadValue errors.

       The XStoreNamedColor function looks up the named color with respect to
       the screen associated with the colormap and stores the result in the
       specified colormap.  The pixel argument determines the entry in the
       colormap.  The flags argument determines which of the red, green, and
       blue components are set.  You can set this member to the bitwise inclu-
       sive OR of the bits DoRed, DoGreen, and DoBlue.  If the color name is
       not in the Host Portable Character Encoding, the result is implementa-
       tion-dependent.  Use of uppercase or lowercase does not matter.  If the
       specified pixel is not a valid index into the colormap, a BadValue
       error results.  If the specified pixel either is unallocated or is
       allocated read-only, a BadAccess error results.

       XStoreNamedColor can generate BadAccess, BadColor, BadName, and Bad-
       Value 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 Col-
                 ormap.

       BadName   A font or color of the specified name does not exist.

       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(3X11), XCreateColormap(3X11), XQueryColor(3X11)
       Xlib - C Language X Interface

X Version 11                     libX11 1.1.1                  XStoreColors(3)