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<HTML><HEAD><TITLE>Xlib Programming Manual: XChangeActivePointerGrab</TITLE></HEAD><BODY><H1 ALIGN=center>XChangeActivePointerGrab</H1><H2>Syntax</H2><!.IN "Pointer" "grabbing"><!.IN "Changing" "pointer grab" ><!.IN "XChangeActivePointerGrab" "" "@DEF@"><CODE><PRE>XChangeActivePointerGrab(<B>display</B>, <B>event_mask</B>, <B>cursor</B>, <B>time</B>) <A HREF="../display/opening.html#Display">Display</A> *<B>display</B>; unsigned int <B>event_mask</B>; Cursor <B>cursor</B>; <A HREF="pointer-grabbing.html#Time">Time</A> <B>time</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>event_mask</B><TD> Specifies which pointer events are reported to the client.The mask is the bitwise inclusive OR of the valid pointer event mask bits.<TR><TD> <B>cursor</B><TD> Specifies the cursor that is to be displayed or<B>None</B>.<TR><TD> <B>time</B><TD> Specifies the time.You can pass either a timestamp or<B>CurrentTime</B>.</TABLE><H2>Description</H2>The<B>XChangeActivePointerGrab()</B>function changes the specified dynamic parameters if the pointer is activelygrabbed by the client and if the specified time is no earlier than thelast-pointer-grab time and no later than the current X server time.This function has no effect on the passive parameters of a<B><A HREF="XGrabButton.html">XGrabButton()</A></B>.The interpretation of event_mask and cursor is the same as described in<B><A HREF="XGrabPointer.html">XGrabPointer()</A></B>.<P><B>XChangeActivePointerGrab()</B>can generate<B>BadCursor</B> and<B>BadValue</B>errors.<H2>Diagnostics</H2><TABLE><TR><TD><B>BadCursor</B> <TD>A value for a Cursor argument does not name a defined Cursor.<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="XAllowEvents.html">XAllowEvents()</A></B>,<B><A HREF="XGrabButton.html">XGrabButton()</A></B>,<B><A HREF="XGrabKey.html">XGrabKey()</A></B>,<B><A HREF="XGrabKeyboard.html">XGrabKeyboard()</A></B>,<B><A HREF="XGrabPointer.html">XGrabPointer()</A></B>,<B><A HREF="XUngrabPointer.html">XUngrabPointer()</A></B>,"<A HREF="pointer-grabbing.html">Pointer Grabbing</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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