Synopsis

color_screen_return, color_exact_return,result_format)

   Display *display;
   Colormap colormap;
   char *color_string;
   XcmsColor *color_screen_return;
   XcmsColor *color_exact_return;
   XcmsColorFormat result_format;

Arguments

displaySpecifies the connection to the X server. 

colormapSpecifies the colormap. 

color_string
Specifies the color string whose color definition structure is to be returned.

color_screen_return
Returns the pixel value of the color cell and color specification that actually is stored for that cell.

color_exact_return
Returns the color specification parsed from the color string or parsed from the corresponding string found in a color name database.

result_format
Specifies the desired color format for the returned color specification.

Description

except the color specification returned can be specified to be in any format supported by the color management system.  This function ultimately calls XAllocColor() to allocate a read-only color cell with the color specified by a color string.  The color string is parsed into an XcmsColor structure, converted to an RGB value, then finally passed to XAllocColor().  The color string may contain a color name that appears in the client-side or X server’s color database; or a numerical color specification for any color management supported color spaces such that the string conforms to the uniform syntax:

<color_space>:<color_space_specific_encoding> For example:

RGB:red/green/blue
RGBi:R/G/B
CIEXYZ:X/Y/Z
CIEuvY:u/v/Y
CIExyY:x/y/Y
CIELab:L/a/b
CIELuv:L/u/v
TekHVC:H/V/C

For the RGB color space, the red, green, and blue parameters are hexidecimal strings of one to four digits.  For each of the other color spaces, each parameter is a floating-point number in standard string format.  In each case, each number specifies a value for one of the parameters of the color space.  Old-style RGB color strings beginning with a "#" remain supported for backwards compatibility.  If the color name is not in the Host Portable Character Encoding the result is implementation-dependent.  Color names are case-insensitive.  This function returns both the color specification as a result of parsing (exact specification) and the actual color specification stored (screen specification).  This screen specification is the result of converting the RGB value returned by XAllocColor() into the format specified by result_format.  If there is no interest in a returned color specification, unnecessary computation can be bypassed if result_format is set to XcmsRGBFormat. 

Errors

BadColor The colormap argument does not name a defined Colormap. 

Structures

The XcmsColor and XcmsColorFormat structures are shown on the XcmsColor reference page. 

See Also

XcmsAllocColor(), XcmsLookupColor(), XcmsQueryColor(), XcmsQueryColors(), XcmsStoreColor(), XcmsStoreColors(), XAllocColor(), XLookupColor(), XParseColor(), XQueryColor(), XQueryColors(), XStoreColor(), XStoreColors(). 

  —