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<HTML><HEAD><TITLE>Xlib Programming Manual: XQueryBestCursor</TITLE></HEAD><BODY><H1 ALIGN=center>XQueryBestCursor</H1><H2>Syntax</H2><!.IN "XQueryBestCursor" "" "@DEF@"><CODE><PRE><B><A HREF="../introduction/errors.html#Status">Status</A></B> XQueryBestCursor(<B>display</B>, <B>d</B>, <B>width</B>, <B>height</B>, <B>width_return</B>, <B>height_return</B>) <A HREF="../display/opening.html#Display">Display</A> *<B>display</B>; Drawable <B>d</B>; unsigned int <B>width</B>, <B>height</B>; unsigned int *<B>width_return</B>, *<B>height_return</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, which indicates the screen. <TR><TD> <B>width</B><TR><TD> <B>height</B><TD> Specify the width and height of the cursor that you want the size information for.<TR><TD> <B>width_return</B><TR><TD> <B>height_return</B><TD> Return the best width and height that is closest to the specified width and height.</TABLE><H2>Description</H2>Some displays allow larger cursors than other displays.The<B>XQueryBestCursor()</B>function provides a way to find out what size cursors are actuallypossible on the display.<!.IN "Cursor" "limitations" >It returns the largest size that can be displayed.Applications should be prepared to use smaller cursors on displays thatcannot support large ones.<P><B>XQueryBestCursor()</B>can generate a<B>BadDrawable</B>error.<H2>Diagnostics</H2><TABLE><TR><TD><B>BadDrawable</B><TD>A value for a Drawable argument does not name a defined Window or Pixmap.</TABLE><H2>See also</H2><B><A HREF="../color/XCreateColormap.html">XCreateColormap()</A></B><B><A HREF="XCreateFontCursor.html">XCreateFontCursor()</A></B>,<B><A HREF="../window/XDefineCursor.html">XDefineCursor()</A></B>,<B><A HREF="XFreeCursor.html">XFreeCursor()</A></B>,<B><A HREF="XRecolorCursor.html">XRecolorCursor()</A></B>,"<A HREF="cursor.html">Creating, Recoloring, and Freeing Cursors</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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