📄 create.html
字号:
<HTML><HEAD><TITLE>Xlib Programming Manual: Windows: Creating</TITLE></HEAD><BODY><H1 ALIGN=center>3.3 Creating Windows</H1>Xlib provides basic ways for creating windows,and toolkits often supply higher-level functions specifically forcreating and placing top-level windows,which are discussed in the appropriate toolkit documentation.If you do not use a toolkit, however,you must provide some standard information or hints for the windowmanager by using the <B><A HREF="../ICC/">Xlib inter-client communication functions</A></B>.<P>If you use Xlib to create your own top-level windows(direct children of the root window),you must observe the following rules so that all applications interactreasonably across the different styles of window management:<UL><P><LI>You must never fight with the window manager for the size orplacement of your top-level window.<P><LI>You must be able to deal with whatever size window you get, even if this means that your application just prints a message like ``Please make me bigger'' in its window.<P><LI>You should only attempt to resize or move top-level windows indirect response to a user request.If a request to change the size of a top-level window fails,you must be prepared to live with what you get.You are free to resize or move the children of top-levelwindows as necessary.(Toolkits often have facilities for automatic relayout.)<P><LI>If you do not use a toolkit that automatically sets standard window properties,you should set these properties for top-level windows before mapping them.</UL><P>For further information,see "<A HREF="../ICC/">Inter-Client Communication Functions</A>" and the <I><A HREF="/gui/x/icccm/">Inter-Client Communication Conventions Manual</A></I>.<P><B><A HREF="XCreateWindow.html">XCreateWindow()</A></B>is the more general function that allows you to set specific window attributes when you create a window.<B><A HREF="XCreateWindow.html">XCreateSimpleWindow()</A></B>creates a window that inherits its attributes from its parent window.<A NAME="InputClass"></A><P><!.IN "Window" "InputOnly">The X server acts as if <B><A HREF="create.html#InputClass">InputOnly</A></B> windows do not exist forthe purposes of graphics requests, exposure processing, and<B><A HREF="../events/window-state-change/visibility.html">VisibilityNotify</A></B> events.An <B><A HREF="create.html#InputClass">InputOnly</A></B> window cannot be used as adrawable (that is, as a source or destination for graphics requests).<B><A HREF="create.html#InputClass">InputOnly</A></B>and <B>InputOutput</B>windows act identically in other respects (properties,grabs, input control, and so on).Extension packages can define other classes of windows.<P>To create an unmapped window and set its window attributes, use<B><A HREF="XCreateWindow.html">XCreateWindow()</A></B>.<P>To create an unmapped <B>InputOutput</B>subwindow of a given parent window, use<B><A HREF="XCreateWindow.html">XCreateSimpleWindow()</A></B>.<H5 ALIGN=right><I>Next: <A HREF="destroy.html">Destroying Windows</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
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -