158 lines
5.1 KiB
Groff
158 lines
5.1 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 XDrawPoint __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
|
|
.SH NAME
|
|
XDrawPoint, XDrawPoints, XPoint \- draw points and points structure
|
|
.SH SYNTAX
|
|
.HP
|
|
int XDrawPoint\^(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, GC
|
|
\fIgc\fP\^, int \fIx\fP\^, int \fIy\fP\^);
|
|
.HP
|
|
int XDrawPoints\^(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, GC
|
|
\fIgc\fP\^, XPoint *\fIpoints\fP\^, int \fInpoints\fP\^, int \fImode\fP\^);
|
|
.SH ARGUMENTS
|
|
.IP \fId\fP 1i
|
|
Specifies the drawable.
|
|
.IP \fIdisplay\fP 1i
|
|
Specifies the connection to the X server.
|
|
.IP \fIgc\fP 1i
|
|
Specifies the GC.
|
|
.IP \fImode\fP 1i
|
|
Specifies the coordinate mode.
|
|
You can pass
|
|
.B CoordModeOrigin
|
|
or
|
|
.BR CoordModePrevious .
|
|
.IP \fInpoints\fP 1i
|
|
Specifies the number of points in the array.
|
|
.IP \fIpoints\fP 1i
|
|
Specifies an array of points.
|
|
.IP \fIx\fP 1i
|
|
.br
|
|
.ns
|
|
.IP \fIy\fP 1i
|
|
Specify the x and y coordinates where you want the point drawn.
|
|
.SH DESCRIPTION
|
|
The
|
|
.B XDrawPoint
|
|
function uses the foreground pixel and function components of the
|
|
GC to draw a single point into the specified drawable;
|
|
.B XDrawPoints
|
|
draws multiple points this way.
|
|
.B CoordModeOrigin
|
|
treats all coordinates as relative to the origin,
|
|
and
|
|
.B CoordModePrevious
|
|
treats all coordinates after the first as relative to the previous point.
|
|
.B XDrawPoints
|
|
draws the points in the order listed in the array.
|
|
.LP
|
|
Both functions use these GC components: function, plane-mask,
|
|
foreground, subwindow-mode, clip-x-origin, clip-y-origin, and clip-mask.
|
|
.LP
|
|
.B XDrawPoint
|
|
can generate
|
|
.BR BadDrawable ,
|
|
.BR BadGC ,
|
|
and
|
|
.B BadMatch
|
|
errors.
|
|
.B XDrawPoints
|
|
can generate
|
|
.BR BadDrawable ,
|
|
.BR BadGC ,
|
|
.BR BadMatch ,
|
|
and
|
|
.B BadValue
|
|
errors.
|
|
.SH STRUCTURES
|
|
The
|
|
.B XPoint
|
|
structure contains:
|
|
.LP
|
|
.EX
|
|
typedef struct {
|
|
short x, y;
|
|
} XPoint;
|
|
.EE
|
|
.LP
|
|
All x and y members are signed integers.
|
|
The width and height members are 16-bit unsigned integers.
|
|
You should be careful not to generate coordinates and sizes
|
|
out of the 16-bit ranges, because the protocol only has 16-bit fields
|
|
for these values.
|
|
.SH DIAGNOSTICS
|
|
.TP 1i
|
|
.B BadDrawable
|
|
A value for a Drawable argument does not name a defined Window or Pixmap.
|
|
.TP 1i
|
|
.B BadGC
|
|
A value for a GContext argument does not name a defined GContext.
|
|
.TP 1i
|
|
.B BadMatch
|
|
An
|
|
.B InputOnly
|
|
window is used as a Drawable.
|
|
.TP 1i
|
|
.B BadMatch
|
|
Some argument or pair of arguments has the correct type and range but fails
|
|
to match in some other way required by the request.
|
|
.TP 1i
|
|
.B BadValue
|
|
Some numeric value falls outside the range of values accepted by the request.
|
|
Unless a specific range is specified for an argument, the full range defined
|
|
by the argument's type is accepted.
|
|
Any argument defined as a set of
|
|
alternatives can generate this error.
|
|
.SH "SEE ALSO"
|
|
XDrawArc(__libmansuffix__),
|
|
XDrawLine(__libmansuffix__),
|
|
XDrawRectangle(__libmansuffix__)
|
|
.br
|
|
\fI\*(xL\fP
|