Any drawing to a window that has the ws _ visible style will not be displayed if the window is covered by other windows or is clipped by its parent window 当窗口被其它窗口覆盖或被父窗口裁剪时，在具有ws _ visible风格位的窗口内的绘图将不会显示。
A dockable toolbar can be attached , or docked , to any side of its parent window , or it can be detached , or floated , in its own miniframe window using Docktool示例阐释对可停靠工具栏的支持。可停靠工具栏可以被附加或停靠到其父窗口的任何一边，或者可以通过
This means that the code for handling the message needs to be in the parent window ' s class and that it has to be duplicated in every class that needs to handle that message 这就意味着处理这些消息的代码需要在父窗口类中实现，而且对于每一个类都要处理这些消息。
In that case , you want to update the contents of the mdi parent s menu with the contents of the mdi child s menu as mdi child windows of different kinds are activated 在这种情况下，您需要在不同类型的mdi子窗口被激活时，用mdi子窗口的菜单内容更新mdi父窗口的菜单内容。
If size of stack window exceeds size of parent ' s client area user can pan window contents by clicking and dragging on the whitespace area or static / disabled control of child dialog box 如果堆栈窗口的页面大小超过了父窗口的客户区域，用户可以通过点击和拖放空白区域或子对话框的静态/禁用控件来扩展窗口内容。
For instance , many controls send a control color notification message ( wm _ ctlcolor or one of its variants ) to their parent to allow the parent to supply a brush for painting the background of the control 例如：许多控件会发送控件颜色通知消息( wm _ ctlcolor或它的一个变体)给其父窗口以允许其父窗口来提供一个绘制控件背景的刷子。
The restrictions prevent potentially harmful spoofing attacks , such as imitating system logon screens or the system desktop , and restricts programmatic access to parent windows , focus - related apis , and use of the 这些限制可以防止潜在的有害欺骗攻击（例如模拟系统登录屏幕或系统桌面） ，还可以限制对父窗口及与焦点相关的api的编程访问以及
The mdidocvw sample provides a parent window with two distinct types of mdi child windows : a bounce window , in which a ball bounces around ; and a hello window , which simply displays the text " hello , world ! Mdidocvw示例提供了一个父窗口，该窗口包含两个不同类型的mdi子窗口：一个“ bounce ”窗口，该窗口中有一个跳动的球；另一个是“ hello ”窗口，该窗口仅显示文本“ hello , world ! ”
If you have supplied a handler for a specific message , or for a range of messages , in your parent window ' s class , it will override reflected message handlers for the same message provided you don ' t call the base class handler function in your own handler 如果你在控件的父窗口类中为一个或一定范围特定的消息提供了一个处理函数，对于同样的消息，如果在您的处理中您并没有调用其基类的处理函数它就会覆盖掉被反射的消息处理。
