circulate.html
来自「linux图形界面x liberary手册」· HTML 代码 · 共 87 行
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<HTML><HEAD><TITLE>Xlib Programming Manual: CirculateRequest Events</TITLE></HEAD><BODY><H1 ALIGN=center>10.11.1 CirculateRequest Events</H1><!.IN "Events" "CirculateRequest"><!.IN "CirculateRequest" "" "@DEF@">The X server can report<B>CirculateRequest</B>events to clients wanting information about when another client initiates a circulate window request on a specified window.The X server generates this event type whenever a client initiates a circulatewindow request on a window and a subwindow actually needs to be restacked. The client initiates a circulate window request on the window by calling<B><A HREF="../../window/XCirculateSubwindows.html">XCirculateSubwindows()</A></B>,<B><A HREF="../../window/XCirculateSubwindowsUp.html">XCirculateSubwindowsUp()</A></B>,or<B><A HREF="../../window/XCirculateSubwindowsDown.html">XCirculateSubwindowsDown()</A></B>.<P>To receive<B>CirculateRequest</B>events, set the<B>SubstructureRedirectMask</B>in the <A HREF="../../window/attributes/event-and-do-not-propagate.html">event-mask</A> attribute of the window. Then, in the future,the circulate window request for the specified window is not executed,and thus, any subwindow's position in the stack is not changed.For example, suppose a client application calls<B><A HREF="../../window/XCirculateSubwindowsUp.html">XCirculateSubwindowsUp()</A></B>to raise a subwindow to the top of the stack.If you had selected<B>SubstructureRedirectMask</B>on the window, the X server reports to you a<B>CirculateRequest</B>event and does not raise the subwindow to the top of the stack.<A NAME="XCirculateRequestEvent"></A><P>The structure for this event type contains:<P><!.IN "XCirculateRequestEvent" "" "@DEF@"><CODE><PRE>typedef struct { int type; /* CirculateRequest */ unsigned long serial; /* # of last request processed by server */ Bool send_event; /* true if this came from a SendEvent request */ Display *display; /* Display the event was read from */ Window parent; Window window; int place; /* PlaceOnTop, PlaceOnBottom */} XCirculateRequestEvent;</PRE></CODE><P>The <B>parent</B> member is set to the parent window.The <B>window</B> member is set to the subwindow to be restacked.The <B>place</B> member is set to what the new position in the stacking order should beand is either<B>PlaceOnTop</B>or<B>PlaceOnBottom</B>.If it is<B>PlaceOnTop</B>,the subwindow should be on top of all siblings.If it is<B>PlaceOnBottom</B>,the subwindow should be below all siblings.<H5 ALIGN=right><I>Next: <A HREF="configure.html">ConfigureRequest Events</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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