Perform a window handle validation of higher process privilege.
执行高进程权限的窗口句柄确认。
If thread a passes a window handle to thread B, then thread B can use this window handle to send or post messages to the window.
如果线程A向线程b传递一个窗口句柄,那么,线程B可以通过发送消息给拥有该句柄的窗口对象。
If the control's handle does not exist yet, this method searches up the control's parent chain until it finds a control or form that does have a window handle.
如果控件句柄尚不存在,则此方法沿控件的父级链搜索,直到它找到有窗口句柄的控件或窗体为止。
应用推荐