捕获最后的WM_SIZE [英] capture the last WM_SIZE

问题描述

当我调整窗口大小时，我想告诉程序的另一部分，我的窗口改变了大小。我在 MSDN 上阅读：

When I resize my window I want to tell another part of my program that my window has changed size. I read on MSDN that:

WM大小消息

WM SIZE消息在大小更改后发送到窗口。

但是，即使拖动，我也会收到WM_SIZE。
我注意到，还有一个WM_SIZING消息，当我的窗口正在调整大小时发送。目前我没有看到WM_SIZE和WM_SIZING之间的区别。

However, I receive the WM_SIZE even when dragging. I noticed that there is also a WM_SIZING message that is sent when my window is resizing. At the moment I do not see the difference between WM_SIZE and WM_SIZING.

有一些方法，我可以捕获最后一个WM_SIZE消息，因为不是垃圾邮件我的程序

Is there some way I can capture the very last WM_SIZE message, as to not "spam" my program with resize messages?

推荐答案

当您开始拖动窗口时，系统进入模态移动/调整大小循环;它不会返回到您自己的消息循环，直到拖动操作完成。您仍然得到 WM_SIZE ，因为它直接发送到窗口过程，但不会流过您自己的消息循环。

When you start dragging a window, the system enters a modal move/resize loop; it does not return to your own message loop until the drag action has finished. You are still getting WM_SIZE because it is sent directly to the window procedure, but it does not flow through your own message loop.

在这种模态拖动操作开始时，系统会发送 WM_ENTERSIZEMOVE 到您的窗口过程。当您释放鼠标按钮时，您的应用程序将获得 WM_EXITSIZEMOVE 。这可能是您要触发的邮件。

At the beginning of such a modal drag action, the system sends WM_ENTERSIZEMOVE to your window procedure. When you release the mouse button, your application will get WM_EXITSIZEMOVE. That is probably the message you want to trigger on.

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