162 lines
6.0 KiB
Groff
162 lines
6.0 KiB
Groff
.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
|
|
.\"
|
|
.\" Permission is hereby granted, free of charge, to any person obtaining
|
|
.\" a copy of this software and associated documentation files (the
|
|
.\" "Software"), to deal in the Software without restriction, including
|
|
.\" without limitation the rights to use, copy, modify, merge, publish,
|
|
.\" distribute, sublicense, and/or sell copies of the Software, and to
|
|
.\" permit persons to whom the Software is furnished to do so, subject to
|
|
.\" the following conditions:
|
|
.\"
|
|
.\" The above copyright notice and this permission notice shall be included
|
|
.\" in all copies or substantial portions of the Software.
|
|
.\"
|
|
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
.\" OTHER DEALINGS IN THE SOFTWARE.
|
|
.\"
|
|
.\" Except as contained in this notice, the name of the X Consortium shall
|
|
.\" not be used in advertising or otherwise to promote the sale, use or
|
|
.\" other dealings in this Software without prior written authorization
|
|
.\" from the X Consortium.
|
|
.\"
|
|
.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
|
|
.\" Digital Equipment Corporation
|
|
.\"
|
|
.\" Portions Copyright \(co 1990, 1991 by
|
|
.\" Tektronix, Inc.
|
|
.\"
|
|
.\" Permission to use, copy, modify and distribute this documentation for
|
|
.\" any purpose and without fee is hereby granted, provided that the above
|
|
.\" copyright notice appears in all copies and that both that copyright notice
|
|
.\" and this permission notice appear in all copies, and that the names of
|
|
.\" Digital and Tektronix not be used in in advertising or publicity pertaining
|
|
.\" to this documentation without specific, written prior permission.
|
|
.\" Digital and Tektronix makes no representations about the suitability
|
|
.\" of this documentation for any purpose.
|
|
.\" It is provided "as is" without express or implied warranty.
|
|
.\"
|
|
.\"
|
|
.ds xT X Toolkit Intrinsics \- C Language Interface
|
|
.ds xW Athena X Widgets \- C Language X Toolkit Interface
|
|
.ds xL Xlib \- C Language X Interface
|
|
.ds xC Inter-Client Communication Conventions Manual
|
|
.TH XcmsAllocColor __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
|
|
.SH NAME
|
|
XcmsAllocColor, XcmsAllocNamedColor \- allocate colors
|
|
.SH SYNTAX
|
|
.HP
|
|
Status XcmsAllocColor\^(\^Display *\fIdisplay\fP\^, Colormap \fIcolormap\fP\^,
|
|
XcmsColor *\fIcolor_in_out\fP\^, XcmsColorFormat \fIresult_format\fP\^);
|
|
.HP
|
|
Status XcmsAllocNamedColor\^(\^Display *\fIdisplay\fP\^, Colormap
|
|
\fIcolormap\fP\^, char *\fIcolor_string\fP\^, XcmsColor
|
|
*\fIcolor_screen_return\fP\^, XcmsColor *\fIcolor_exact_return\fP\^, XcmsColorFormat \fIresult_format\fP\^);
|
|
.SH ARGUMENTS
|
|
.IP \fIdisplay\fP 1i
|
|
Specifies the connection to the X server.
|
|
.IP \fIcolormap\fP 1i
|
|
Specifies the colormap.
|
|
.IP \fIcolor_exact_return\fP 1i
|
|
Returns the color specification parsed from the color string
|
|
or parsed from the corresponding string found in a color-name database.
|
|
.IP \fIcolor_in_out\fP 1i
|
|
Specifies the color to allocate and returns the pixel and color
|
|
that is actually used in the colormap.
|
|
.IP \fIcolor_screen_return\fP 1i
|
|
Returns the pixel value of the color cell and color specification
|
|
that actually is stored for that cell.
|
|
.ds St \
|
|
.IP \fIcolor_string\fP 1i
|
|
Specifies the color string whose color definition structure is to be returned.
|
|
.IP \fIresult_format\fP 1i
|
|
Specifies the color format for the returned color specification.
|
|
.SH DESCRIPTION
|
|
The
|
|
.B XcmsAllocColor
|
|
function is similar to
|
|
.B XAllocColor
|
|
except the color can be specified in any format.
|
|
The
|
|
.B XcmsAllocColor
|
|
function ultimately calls
|
|
.B XAllocColor
|
|
to allocate a read-only color cell (colormap entry) with the specified color.
|
|
.B XcmsAllocColor
|
|
first converts the color specified
|
|
to an RGB value and then passes this to
|
|
.BR XAllocColor .
|
|
.B XcmsAllocColor
|
|
returns the pixel value of the color cell and the color specification
|
|
actually allocated.
|
|
This returned color specification is the result of converting the RGB value
|
|
returned by
|
|
.B XAllocColor
|
|
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
|
|
.BR XcmsRGBFormat .
|
|
The corresponding colormap cell is read-only.
|
|
If this routine returns
|
|
.BR XcmsFailure ,
|
|
the color_in_out color specification is left unchanged.
|
|
.LP
|
|
.B XcmsAllocColor
|
|
can generate a
|
|
.B BadColor
|
|
errors.
|
|
.LP
|
|
The
|
|
.B XcmsAllocNamedColor
|
|
function is similar to
|
|
.B XAllocNamedColor
|
|
except that the color returned can be in any format specified.
|
|
This function
|
|
ultimately calls
|
|
.B XAllocColor
|
|
to allocate a read-only color cell with
|
|
the color specified by a color string.
|
|
The color string is parsed into an
|
|
.B XcmsColor
|
|
structure (see
|
|
.BR XcmsLookupColor ),
|
|
converted
|
|
to an RGB value, and finally passed to
|
|
.BR 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.
|
|
.LP
|
|
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
|
|
.B 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
|
|
.BR 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.
|
|
.LP
|
|
.LP
|
|
.B XcmsAllocNamedColor
|
|
can generate a
|
|
.B BadColor
|
|
errors.
|
|
.SH DIAGNOSTICS
|
|
.TP 1i
|
|
.B BadColor
|
|
A value for a Colormap argument does not name a defined Colormap.
|
|
.SH "SEE ALSO"
|
|
XcmsQueryColor(__libmansuffix__),
|
|
XcmsStoreColor(__libmansuffix__)
|
|
.br
|
|
\fI\*(xL\fP
|