XcmsAllocColor(3X11) X11R5 XcmsAllocColor(3X11)NAME
XcmsAllocColor, XcmsAllocNamedColor - allocate colors
SYNTAX
Status XcmsAllocColor(display, colormap, color_in_out, result_format)
Display *display;
Colormap colormap;
XcmsColor *color_in_out;
XcmsColorFormat result_format;
Status XcmsAllocNamedColor(display, colormap, color_string, result_for‐
mat, color_screen_return,
color_exact_return)
Display *display;
Colormap colormap;
char *color_string;
XcmsColorFormat result_format;
XcmsColor *color_screen_return;
XcmsColor *color_exact_return;
ARGUMENTS
display Specifies the connection to the X server.
colormap Specifies the colormap.
color_exact_return
Returns the color specification parsed from the color string
or parsed from the corresponding string found in a color name
database.
color_in_out
Specifies the color to allocate and returns the pixel and
color that is actually used in the colormap.
color_screen_return
Returns the pixel value of the color cell and color specifi‐
cation that actually is stored for that cell.
color_string
Specifies the color string whose color definition structure
is to be returned.
result_format
Specifies the color format for the returned color specifica‐
tion.
DESCRIPTION
The function is similar to except the color can be specified in any
format. The function ultimately calls to allocate a read-only color
cell (colormap entry) with the specified color. first converts the
color specified to an RGB value and then passes this to returns the
pixel value of the color cell and the color specification actually
allocated. This returned color specification is the result of convert‐
ing the RGB value returned by into the format specified with the
result_format argument. If there is no interest in a returned color
specification, unnecessary computation can be bypassed if result_format
is set to The corresponding colormap cell is read-only. If this rou‐
tine returns the color_in_out color specification is left unchanged.
can generate a errors.
The function is similar to except the color returned can be in any for‐
mat specified. This function ultimately calls to allocate a read-only
color cell with the color specified by a color string. The color
string is parsed into an structure (see converted to an RGB value, then
finally passed to the 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 pars‐
ing (exact specification) and the actual color specification stored
(screen specification). This screen specification is the result of
converting the RGB value returned by into the format specified in
result_format. If there is no interest in a returned color specifica‐
tion, unnecessary computation can be bypassed if result_format is set
to
can generate a errors.
DIAGNOSTICS
A value for a Colormap argument does not name a defined Colormap.
SEE ALSOXcmsQueryColor(3X11), XcmsStoreColor(3X11)
Xlib - C Language X Interface
XcmsAllocColor(3X11)
