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<HTML><HEAD><TITLE>Xlib Programming Manual: XCopyArea</TITLE></HEAD><BODY><H1 ALIGN=center>XCopyArea</H1><H2>Syntax</H2><!.IN "Areas" "copying"><!.IN "Copying" "areas"><!.IN "XCopyArea" "" "@DEF@"><CODE><PRE>XCopyArea(<B>display</B>, <B>src</B>, <B>dest</B>, <B>gc</B>, <B>src_x</B>, <B>src_y</B>, <B>width</B>, <B>height</B>, <B>dest_x</B>, <B>dest_y</B>) <A HREF="../display/opening.html#Display">Display</A> *<B>display</B>; Drawable <B>src</B>, <B>dest</B>; <A HREF="../GC/manipulating.html">GC</A> <B>gc</B>; int <B>src_x</B>, <B>src_y</B>; unsigned int <B>width</B>, <B>height</B>; int <B>dest_x</B>, <B>dest_y</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>src</B><BR> <B>dest</B><TD> Specify the source and destination rectangles to be combined. <TR><TD> <B>gc</B><TD> Specifies the GC.<TR><TD> <B>src_x</B><BR> <B>src_y</B><TD> Specify the x and y coordinates, which are relative to the origin of the source rectangleand specify its upper-left corner.<TR><TD> <B>width</B><TR><TD> <B>height</B><TD> Specify the width and height, which are the dimensions of both the source and destination rectangles.<TR><TD> <B>dest_x</B><BR> <B>dest_y</B><TD> Specify the x and y coordinates, which are relative to the origin of the destination rectangle and specify its upper-left corner</TABLE><H2>Description</H2>The<B>XCopyArea()</B>function combines the specified rectangle of src with the specified rectangle of dest.The drawables must have the same root and depth,or a<B>BadMatch</B>error results.<P>If regions of the source rectangle are obscured and have not beenretained in backing store or if regions outside the boundaries of the source drawable are specified, those regions are not copied. Instead, the following occurs on all corresponding destination regions that are eithervisible or are retained in backing store. If the destination is a window with a background other than <B>None</B>, corresponding regionsof the destination are tiled with that background(with plane-mask of all ones and<B>GXcopy</B> function).Regardless of tiling or whether the destination is a window or a pixmap,if graphics-exposures is <B>True</B>,then<B><A HREF="../events/exposure/graphics-expose-and-no-expose.html">GraphicsExpose</A></B>events for all corresponding destination regions are generated.If graphics-exposures is <B>True</B> but no<B><A HREF="../events/exposure/graphics-expose-and-no-expose.html">GraphicsExpose</A></B>events are generated, a<B><A HREF="../events/exposure/graphics-expose-and-no-expose.html">NoExpose</A></B> event is generated.Note that by default graphics-exposures is<B>True</B>in new GCs.<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#subwindow-mode">subwindow-mode</A>,<A HREF="../GC/manipulating.html#graphics-exposure">graphics-exposure</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>.<P><B>XCopyArea()</B>can generate<B>BadDrawable</B>,<B>BadGC</B>,and<B>BadMatch</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="../my-own/gcontext.html">GContext</A></B> argument does not name a defined <B><A HREF="../my-own/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.</TABLE> <H2>See also</H2><B><A HREF="XClearArea.html">XClearArea()</A></B>,<B><A HREF="XCopyPlane.html">XCopyPlane()</A></B>,"<A HREF="copying-areas.html">Copying Areas</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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