XcmsAllocColor(3) | Library Functions Manual | XcmsAllocColor(3) |
Status XcmsAllocColor(Display *display, Colormap colormap, XcmsColor * color_in_out, XcmsColorFormat result_format);
Status XcmsAllocNamedColor(Display *display, Colormap colormap, char *color_string, XcmsColor * color_screen_return, XcmsColor *color_exact_return, XcmsColorFormat result_format);
XcmsAllocColor can generate a BadColor errors.
The XcmsAllocNamedColor function is similar to XAllocNamedColor except that the color returned can be in any format specified. 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 (see XcmsLookupColor), converted to an RGB value, and finally passed to XAllocColor. 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.
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 in result_format. If there is no interest in a returned color specification, unnecessary computation can be bypassed if result_format is set to XcmsRGBFormat. If color_screen_return and color_exact_return point to the same structure, the pixel field will be set correctly, but the color values are undefined.
XcmsAllocNamedColor can generate a BadColor errors.
X Version 11 | XLIB FUNCTIONS |