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<HTML><HEAD><TITLE>Xlib Programming Manual: CreateNotify Events</TITLE><HEAD><BODY><H1 ALIGN=center>10.10.3 CreateNotify Events</H1>The X server can report<B>CreateNotify</B>events to clients wanting information about creation of windows.The X server generates this event whenever a clientapplication creates a window by calling<B><A HREF="../../window/XCreateWindow.html">XCreateWindow()</A></B>or<B><A HREF="../../window/XCreateWindow.html">XCreateSimpleWindow()</A></B>.<P>To receive <B>CreateNotify</B>events, set the<B>SubstructureNotifyMask</B>bit in the <A HREF="../../window/attributes/event-and-do-not-propagate.html">event-mask</A> attribute of the window.Creating any children then generates an event.<A NAME="XCreateWindowEvent"></A><P>The structure for the event type contains:<P><PRE><CODE>typedef struct { int <B>type</B>; /* CreateNotify */ unsigned long <B>serial</B>; /* # of last request processed by server */ Bool <B>send_event</B>; /* true if this came from a <B><A HREF="../../appendix/a.html#SendEvent">SendEvent</A></B> request */ Display *<B>display</B>; /* Display the event was read from */ Window <B>parent</B>; /* parent of the window */ Window <B>window</B>; /* window id of window created */ int <B>x</B>, <B>y</B>; /* window location */ int <B>width</B>, <B>height</B>; /* size of window */ int <B>border_width</B>; /* border width */ Bool <B>override_redirect</B>; /* creation should be overridden */} XCreateWindowEvent;</CODE></PRE><P>The <B>parent</B> member is set to the created window's parent.<BR>The <B>window</B> member specifies the created window.<BR>The <B>x</B> and <B>y</B> members are set to the created window's coordinates relative to the parent window's origin and indicate the position of the upper-left outside corner of the created window.<BR>The <B>width</B> and <B>height</B> members are set to the inside size of the created window (not including the border) and are always nonzero.<BR>The <B>border_width</B> member is set to the width of the created window's border, in pixels.<BR>The <B>override_redirect</B> member is set to the override-redirect attribute of thewindow.Window manager clients normally should ignore this window if the override_redirect member is<B>True</B>.<H5 ALIGN=right><I>Next: <A HREF="destroy.html">DestroyNotify 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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