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<HTML><HEAD><TITLE>Xlib Programming Manual: XSubImage</TITLE></HEAD><BODY><H1 ALIGN=center>XSubImage</H1><H2>Syntax</H2><!.IN "XSubImage" "" "@DEF@"><CODE><PRE><A HREF="../graphics/images.html#XImage">XImage</A> *XSubImage(<B>ximage</B>, <B>x</B>, <B>y</B>, <B>subimage_width</B>, <B>subimage_height</B>) <A HREF="../graphics/images.html#XImage">XImage</A> *<B>ximage</B>; int <B>x</B>; int <B>y</B>; unsigned int <B>subimage_width</B>; unsigned int <B>subimage_height</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>ximage</B><TD> Specifies the image.<TR><TD> <B>x</B><BR> <B>y</B><TD> Specify the x and y coordinates.<TR><TD> <B>subimage_width</B><TD> Specifies the width of the new subimage, in pixels.<TR><TD> <B>subimage_height</B><TD> Specifies the height of the new subimage, in pixels.</TABLE><H2>Description</H2>The<B>XSubImage()</B>function creates a new image that is a subsection of an existing one.It allocates the memory necessary for the new<A HREF="../graphics/images.html#XImage">XImage</A>structureand returns a pointer to the new image.The data is copied from the source image,and the image must contain the rectangle defined by <B>x</B>, <B>y</B>, <B>subimage_width</B>,and <B>subimage_height</B>.<H2>See also</H2><B><A HREF="XAddPixel.html">XAddPixel()</A></B>,<B><A HREF="XCreateImage.html">XCreateImage()</A></B>,<B><A HREF="XDestroyImage.html">XDestroyImage()</A></B>,<B><A HREF="XGetPixel.html">XGetPixel()</A></B>,<B><A HREF="XPutPixel.html">XPutPixel()</A></B>,"<A HREF="manipulating-images.html">Manipulating Images</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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