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<HTML><HEAD><TITLE>Xlib Programming Manual: Creating, Recoloring, and Freeing Cursors</TITLE></HEAD><BODY><H1 ALIGN=center>5.2 Creating, Recoloring, and Freeing Cursors</H1>Each window can have a different cursor defined for it.Whenever the pointer is in a visible window, it is set to the cursor defined for that window.If no cursor was defined for that window, the cursor is the one defined for the parent window.<P>From X's perspective, a cursor consists of a cursor source, mask, colors, and a hotspot. The mask pixmap determines the shape of the cursor and must be a depthof one.The source pixmap must have a depth of one,and the colors determine the colors of the source.The hotspot defines the point on the cursor that is reportedwhen a pointer event occurs.There may be limitations imposed by the hardware oncursors as to size and whether a mask is implemented. <!.IN "XQueryBestCursor"><B><A HREF="XQueryBestCursor.html">XQueryBestCursor()</A></B>can be used to find out what sizes are possible.There is a standard font for creating cursors, butXlib provides functions that you can use to create cursorsfrom an arbitrary font or from bitmaps.<P>To create a cursor from the standard cursor font, use<B><A HREF="XCreateFontCursor.html">XCreateFontCursor()</A></B>.<P>To create a cursor from font glyphs, use<B><A HREF="XCreateGlyphCursor.html">XCreateGlyphCursor()</A></B>.<P>To create a cursor from two bitmaps,use<B><A HREF="XCreatePixmapCursor.html">XCreatePixmapCursor()</A></B>.<P>To determine useful cursor sizes, use<B><A HREF="XQueryBestCursor.html">XQueryBestCursor()</A></B>.<P>To change the color of a given cursor, use<B><A HREF="XRecolorCursor.html">XRecolorCursor()</A></B>.<P>To free (destroy) a given cursor, use<B><A HREF="XFreeCursor.html">XFreeCursor()</A></B>.<H5 ALIGN=right><I>Next Chapter: <A HREF="../color/">Color Management Functions</A></I></H5><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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