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<HTML><HEAD><TITLE>Xlib Programming Manual: XDrawPoints</TITLE></HEAD><BODY><H1 ALIGN=center>XDrawPoints</H1><H2>Syntax</H2><!.IN "XDrawPoints" "" "@DEF@"><CODE><PRE>XDrawPoints(<B>display</B>, <B>d</B>, <B>gc</B>, <B>points</B>, <B>npoints</B>, <B>mode</B>) <A HREF="../../display/opening.html#Display">Display</A> *<B>display</B>; Drawable <B>d</B>; <A HREF="../../GC/manipulating.html">GC</A> <B>gc</B>; <A HREF="./#XPoint">XPoint</A> *<B>points</B>; int <B>npoints</B>; int <B>mode</B>; </PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>d</B><TD> Specifies the drawable. <TR><TD> <B>gc</B><TD> Specifies the GC.<TR><TD> <B>points</B><TD> Specifies an array of points.<TR><TD> <B>npoints</B><TD> Specifies the number of points in the array.<TR><TD> <B>mode</B><TD> Specifies the coordinate mode. You can pass<B>CoordModeOrigin</B>or<B>CoordModePrevious</B>.</TABLE><H2>Description</H2><B>XDrawPoints()</B>draws multiple points the same way<B><A HREF="XDrawPoint.html">XDrawPoint()</A></B> draws one point.<B>CoordModeOrigin</B>treats all coordinates as relative to the origin,and<B>CoordModePrevious</B>treats all coordinates after the first as relative to the previous point.<B>XDrawPoints()</B>draws the points in the order listed in the array.<P>This function uses these GC components: <A HREF="../../GC/manipulating.html#function">function</A>,<A HREF="../../GC/manipulating.html#plane-mask">plane-mask</A>,<A HREF="../../GC/manipulating.html#foreground">foreground</A>,<A HREF="../../GC/manipulating.html#subwindow-mode">subwindow-mode</A>,<A HREF="../../GC/manipulating.html#clip-mask">clip-x-origin</A>,<A HREF="../../GC/manipulating.html#clip-mask">clip-y-origin</A>,and<A HREF="../../GC/manipulating.html#clip-mask">clip-mask</A>.<B>XDrawPoints()</B>can generate<B>BadDrawable</B> ,<B>BadGC</B> ,<B>BadMatch</B> ,and<B>BadValue</B> errors.<H2>Diagnostics</H2><TABLE><TR><TD><B>BadDrawable</B><TD>A value for a Drawable argument does not name a defined Window or Pixmap.<TR><TD><B>BadGC</B><TD>A value for a <B><A HREF="../GContext.html">GContext</A></B> argument does not name a defined <B><A HREF="../GContext.html">GContext</A></B>.<TR><TD><B>BadMatch</B><TD>An<B><A HREF="../../window/create.html#InputClass">InputOnly</A></B>window is used as a Drawable.<TR><TD><B>BadMatch</B><TD>Some argument or pair of arguments has the correct type and range but fails to match in some other way required by the request. <TR><TD><B>BadValue</B><TD> 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.</TABLE><H2>See also</H2><B><A HREF="XDrawArc.html">XDrawArc()</A></B>,<B><A HREF="XDrawLine.html">XDrawLine()</A></B>,<B><A HREF="XDrawPoint.html">XDrawPoint()</A></B>,<B><A HREF="XDrawRectangle.html">XDrawRectangle()</A></B>,"<A HREF="points.html">Drawing Single and Multiple Points</A>".<HR><ADDRESS><A HREF="http://tronche.com/">Christophe Tronche</A>, <A HREF="mailto:ch.tronche@computer.org">ch.tronche@computer.org</A></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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