XStoreColors 3X11 __xorgversion__ XLIB FUNCTIONS XStoreColors XStoreColor XStoreNamedColor set colors 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 ); 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 definition array. pixel Specifies the entry in the colormap. 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 inclusive OR of the bits  DoRed ,  DoGreen , and  DoBlue . If the color name is not in the Host Portable Character Encoding, the result is implementation-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  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.  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. XAllocColor(3X11), XCreateColormap(3X11), XQueryColor(3X11) Xlib - C Language X Interface