238 lines
5.1 KiB
Plaintext
238 lines
5.1 KiB
Plaintext
.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.na
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.de Ds
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.TH XDrawPoint 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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XDrawPoint, XDrawPoints, XPoint \- draw points and points structure
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.SH SYNTAX
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.\" $Header: XPoint.f,v 1.1 88/02/26 10:01:54 mento Exp $
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XDrawPoint\^(\^\fIdisplay\fP, \fId\fP\^, \fIgc\fP\^, \fIx\fP\^, \fIy\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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Drawable \fId\fP\^;
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.br
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GC \fIgc\fP\^;
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.br
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int \fIx\fP\^, \fIy\fP\^;
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.LP
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.\" $Header: XPoints.f,v 1.1 88/02/26 10:01:55 mento Exp $
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XDrawPoints\^(\^\fIdisplay\fP, \fId\fP\^, \fIgc\fP\^, \fIpoints\fP\^, \fInpoints\fP\^, \fImode\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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Drawable \fId\fP\^;
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.br
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GC \fIgc\fP\^;
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.br
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XPoint *\fIpoints\fP\^;
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.br
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int \fInpoints\fP\^;
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.br
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int \fImode\fP\^;
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.SH ARGUMENTS
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.\" $Header: d.a,v 1.1 88/02/26 10:04:25 mento Exp $
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.IP \fId\fP 1i
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Specifies the drawable.
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.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.\" $Header: gc.a,v 1.2 88/05/09 11:20:34 mento Exp $
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.IP \fIgc\fP 1i
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Specifies the GC.
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.\" $Header: mode.a,v 1.4 88/05/18 07:53:37 mento Exp $
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.IP \fImode\fP 1i
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Specifies the coordinate mode.
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You can pass
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.ZN CoordModeOrigin
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or
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.ZN CoordModePrevious .
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.\" $Header: npoints.a,v 1.1 88/02/26 10:29:46 mento Exp $
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.IP \fInpoints\fP 1i
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Specifies the number of points in the array.
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.\" $Header: points.a,v 1.1 88/02/26 10:30:33 mento Exp $
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.IP \fIpoints\fP 1i
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Specifies an array of points.
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.\" $Header: xy_point.a,v 1.1 88/02/26 10:32:57 mento Exp $
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.IP \fIx\fP 1i
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.br
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.ns
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.IP \fIy\fP 1i
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Specify the x and y coordinates where you want the point drawn.
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.SH DESCRIPTION
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.\" $Header: XPoint.d,v 1.4 88/06/11 07:52:15 mento Exp $
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The
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.ZN XDrawPoint
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function uses the foreground pixel and function components of the
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GC to draw a single point into the specified drawable;
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.ZN XDrawPoints
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draws multiple points this way.
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.ZN CoordModeOrigin
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treats all coordinates as relative to the origin,
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and
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.ZN CoordModePrevious
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treats all coordinates after the first as relative to the previous point.
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.ZN XDrawPoints
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draws the points in the order listed in the array.
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.LP
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Both functions use these GC components: function, plane-mask,
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foreground, subwindow-mode, clip-x-origin, clip-y-origin, and clip-mask.
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.LP
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.ZN XDrawPoint
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can generate
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.ZN BadDrawable ,
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.ZN BadGC ,
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and
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.ZN BadMatch
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errors.
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.ZN XDrawPoints
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can generate
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.ZN BadDrawable ,
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.ZN BadGC ,
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.ZN BadMatch ,
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and
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.ZN BadValue
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errors.
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.SH STRUCTURES
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The
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.ZN XPoint
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structure contains:
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.LP
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.Ds 0
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.TA .5i
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.ta .5i
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typedef struct {
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short x, y;
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} XPoint;
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.De
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.LP
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All x and y members are signed integers.
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The width and height members are 16-bit unsigned integers.
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You should be careful not to generate coordinates and sizes
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out of the 16-bit ranges, because the protocol only has 16-bit fields
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for these values.
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.SH DIAGNOSTICS
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.\" $Header: baddrawable.e,v 1.1 87/09/04 08:22:59 mento Exp $
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.TP 1i
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.ZN BadDrawable
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A value for a Drawable argument does not name a defined Window or Pixmap.
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.\" $Header: badgc.e,v 1.1 87/09/04 08:23:02 mento Locked $
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.TP 1i
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.ZN BadGC
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A value for a GContext argument does not name a defined GContext.
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.\" $Header: badmatch1.e,v 1.3 87/09/09 18:18:54 mento Exp $
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.TP 1i
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.ZN BadMatch
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An
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.ZN InputOnly
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window is used as a Drawable.
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.\" $Header: badmatch2.e,v 1.3 87/09/11 11:53:42 mento Exp $
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.TP 1i
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.ZN BadMatch
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Some argument or pair of arguments has the correct type and range but fails
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to match in some other way required by the request.
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.\" $Header: badvalue.e,v 1.1 87/09/04 08:23:19 mento Exp $
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.TP 1i
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.ZN BadValue
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Some numeric value falls outside the range of values accepted by the request.
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Unless a specific range is specified for an argument, the full range defined
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by the argument's type is accepted. Any argument defined as a set of
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alternatives can generate this error.
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.SH "SEE ALSO"
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XDrawArc(3X11),
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XDrawLine(3X11),
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XDrawRectangle(3X11)
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.br
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\fI\*(xL\fP
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