Query: xlookupcolor
OS: hpux
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
XLookupColor() XLookupColor() Name XLookupColor - get database RGB values and closest hardware-supported RGB values from color name. Synopsis Status XLookupColor(display, colormap, colorname, exact_def_return, screen_def_return) Display *display; Colormap colormap; char *colorname; XColor *exact_def_return, *screen_def_return; Arguments display Specifies a connection to an X server; returned from XOpenDisplay(). colormap Specifies the colormap. colorname Specifies a color name string (for example "red"). Uppercase or lowercase does not matter. If the color name is not in the Host Portable Character Encoding, the result is implementation-dependent. exact_def_return Returns the exact RGB values for the specified color name from the /usr/lib/X11/rgb database. screen_def_return Returns the closest RGB values possible on the hardware. Returns Zero on failure, non-zero on success. Description XLookupColor() looks up RGB values for a color given the colorname string. It returns both the exact color values and the closest values possible on tthe screen specified by colormap. XLookupColor() returns non-zero if colorname exists in the RGB database or zero if it does not exist. To determine the exact RGB values, XLookupColor() uses a database on the X server. On UNIX, this database is /usr/lib/X11/rgb. To read the colors provided by the database on a UNIX-based system, see /usr/lib/X11/rgb.txt. The location, name, and contents of this file are server-dependent. For more information see Volume One, Chapter 7, Color, and Appendix D, The Server-side Color Database, in this volume. Errors BadName Color name not in database. BadColor Invalid colormap. Structures typedef struct { unsigned long pixel; unsigned short red, green, blue; char flags; /* DoRed, DoGreen, DoBlue */ char pad; } XColor; See Also XBlackPixel(), XWhitePixel(), XAllocColor(), XAllocColorCells(), XAllocColorPlanes(), XAllocNamedColor(), XFreeColors(), XParseColor(), XQueryColor(), XQueryColors(), XStoreColor(), XStoreColors(), XStoreNamedColor(). Xlib - Color Cells XLookupColor()
Related Man Pages |
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xquerycolor(3x11) - ultrix |
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xparsecolor(3) - hpux |
xquerycolob(3) - hpux |
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