让窗口相信它仍然是焦点，尽管它不是 [英] Letting a Window believe it is still in focus although it is not

问题描述

我必须处理一个讨厌的MS Windows应用程序，该应用程序一旦失去焦点，便立即停止工作.我的问题是，尽管实际上不是真正的焦点，但我如何才能以某种方式欺骗该应用程序呢?

I have to deal with a nasty MS Windows application that quits doing its job as soon as it loses focus. My question is, how can I trick this application somehow to believe that it is still in focus, although it really is not?

我的想法是:

1. 是否可以仅从该应用程序中抑制相应的"WM"消息?
2. 我是否可以向该窗口发送虚假消息，使其看起来像是焦点所在?

推荐答案

发送WM_ACTIVATE消息适用于某些应用程序:

Sending the WM_ACTIVATE message works for some apps:

 SendMessage(hWnd, WM_ACTIVATE, WA_CLICKACTIVE, hWnd);

将最后一个参数保留为NULL也可能起作用.

Leaving the last parameter as NULL might work too.

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