聆听到另一个窗口调整在C＃中的事件 [英] Listening to another window resize events in C#

问题描述

我实现，需要自己附加到另一个窗口（观察）底部的小应用（观察员）。后者不是在应用程序内的一个窗口。

I am implementing a small application (observer) that needs to "attach" itself to the bottom of another window (observed). The latter is not a window inside the application.

在这一刻我解决了获取hWnd中的窗口，并在线程定期查询观察窗口的位置，相应地移动观测窗。

At this moment I solved by getting the hWnd of the window and querying periodically in a thread the location of the observed window, moving the observer window accordingly.

然而，这是一个非常不雅溶液。我想要做的就是听观察窗口的resize事件，使得观察者会作何反应只在必要时。

However this is a very inelegant solution. What I would like to do is to listen to the resize event of the observed window so that the observer will react only when necessary.

我想我应该用一个钩子，我发现很多做这件事的方法，但我缺乏的C WinAPI的知识挡住我的理解，我需要创建一个钩子和如何（PInvoke的/参数/等）

I assume I should use a hook, and I found plenty of ways of doing it, but my lack of knowledge of the C WinAPI is blocking me in understanding which hook I need to create and how (pinvoke/parameters/etc).

我是pretty肯定这是相当琐碎，和一些你熟悉C / C ++和WinAPI的将有答案准备在手;）

I'm pretty sure this is quite trivial, and some of you familiar with C/C++ and WinAPI will have the answer ready at hand ;)

感谢

推荐答案

拓展克里斯·泰勒的回答：与其自己做本地互操作，您可以使用的 ManagedWinApi ，其中包含了挂钩类。

Expanding on Chris Taylor's answer: Instead of doing the native interop yourself, you can use ManagedWinApi, which contains a Hook class.

编辑：要使用ManagedWinApi。在某处，code：

To use ManagedWinApi. Somewhere in your code:

Hook MyHook = new Hook(HookType.WH_CALLWNDPROC, false, false);
MyHook.Callback += MyHookCallback;
MyHook StartHook();

有关回调，参考 CallWndProc 并的 CWPSTRUCT ：

private static int MyHookCallback(int code, IntPtr wParam, IntPtr lParam, ref bool callNext)
{
    if (code >= 0)
    {
        // You will need to define the struct
        var message = (CWPSTRUCT)Marshal.PtrToStructure(lParam, typeof(CWPSTRUCT));
        // Do something with the data
    }
    return 0; // Return value is ignored unless you set callNext to false
}

这篇关于聆听到另一个窗口调整在C＃中的事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！