XQueryColor(display, colormap, def_in_out)
      Display *display;
      Colormap colormap;
      XColor *def_in_out;


display Specifies the connection to the X server.
colormap Specifies the colormap.
def_in_out Specifies and returns the RGB values for the pixel specified in the structure.


The XQueryColor() function returns the current RGB value for the pixel in the XColor structure and sets the DoRed, DoGreen, and DoBlue flags.

XQueryColor() can generate BadColor and BadValue errors.


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(), XLookupColor(), XParseColor(), XQueryColors(), XStoreColors(), "Modifying and Querying Colormap Cells".
Christophe Tronche, ch@tronche.com