XcmsStoreColor 3X11 __xorgversion__ XLIB FUNCTIONS XcmsStoreColor XcmsStoreColors set colors Status XcmsStoreColor ( Display *display , Colormap colormap , XcmsColor *color ); Status XcmsStoreColors ( Display *display , Colormap colormap , XcmsColor colors [ ] , int ncolors , Bool compression_flags_return [ ] ); display Specifies the connection to the X server. color Specifies the color cell and the color to store. Values specified in this  XcmsColor  structure remain unchanged on return. colors Specifies the color specification array of  XcmsColor  structures, each specifying a color cell and the color to store in that cell. Values specified in the array remain unchanged upon return. colormap Specifies the colormap. compression_flags_return Returns an array of Boolean values indicating compression status. If a non-NULL pointer is supplied, each element of the array is set to  True  if the corresponding color was compressed and  False  otherwise. Pass NULL if the compression status is not useful. ncolors Specifies the number of  XcmsColor  structures in the color-specification array. The  XcmsStoreColor  function converts the color specified in the  XcmsColor  structure into RGB values. It then uses this RGB specification in an  XColor  structure, whose three flags ( DoRed ,  DoGreen , and  DoBlue ) are set, in a call to  XStoreColor  to change the color cell specified by the pixel member of the  XcmsColor  structure. This pixel value must be a valid index for the specified colormap, and the color cell specified by the pixel value must be a read/write cell. If the pixel value is not a valid index, a  BadValue  error results. If the color cell is unallocated or is allocated read-only, a  BadAccess  error results. If the colormap is an installed map for its screen, the changes are visible immediately. Note that  XStoreColor  has no return value; therefore, an  XcmsSuccess  return value from this function indicates that the conversion to RGB succeeded and the call to  XStoreColor  was made. To obtain the actual color stored, use  XcmsQueryColor . Because of the screen's hardware limitations or gamut compression, the color stored in the colormap may not be identical to the color specified.  XcmsStoreColor  can generate  BadAccess ,  BadColor , and  BadValue  errors. The  XcmsStoreColors  function converts the colors specified in the array of  XcmsColor  structures into RGB values and then uses these RGB specifications in  XColor  structures, whose three flags ( DoRed ,  DoGreen , and  DoBlue ) are set, in a call to  XStoreColors  to change the color cells specified by the pixel member of the corresponding  XcmsColor  structure. Each pixel value must be a valid index for the specified colormap, and the color cell specified by each pixel value must be a read/write cell. If a pixel value is not a valid index, a  BadValue  error results. If a color cell 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. If the colormap is an installed map for its screen, the changes are visible immediately. Note that  XStoreColors  has no return value; therefore, an  XcmsSuccess  return value from this function indicates that conversions to RGB succeeded and the call to  XStoreColors  was made. To obtain the actual colors stored, use  XcmsQueryColors . Because of the screen's hardware limitations or gamut compression, the colors stored in the colormap may not be identical to the colors specified.  XcmsStoreColors  can generate  BadAccess ,  BadColor , and  BadValue  errors.  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. XcmsAllocColor(3X11), XcmsQueryColor(3X11) Xlib - C Language X Interface