获取非客户端“关闭"的 hWnd按钮 [x] (win32) [英] Get the hWnd of the non-client "close" button [x] (win32)

问题描述

我的应用需要显示一个指向右上角角[x]按钮的信息气球，指示必须通过单击指向的按钮关闭窗口[x] 按钮.

My app needs to display an info balloon pointing to the upper-right corner [x] button indicating the window has to be closed by clicking the pointed [x] button.

出于这个原因，我需要获取 [x] 按钮 hWnd 或者如果知道它的(未记录的)资源 ID.你们知道如何用普通的 win32 做到这一点吗?

for this reason I need to get the [x] button hWnd or if known its (undocumented) resource Id. Do you guys know how to do this with plain win32?

我尝试过其他处理非客户端元素指标的替代方法，但它们都给出了不一致的结果(考虑我的应用从 W2K 运行到 W8)

I have tried other alternatives dealing with non-client element metrics but they all gave unconsistent results (consider my app runs from W2K to W8)

谢谢

推荐答案

那里的关闭按钮没有窗口，也没有单独的HWND.相反，它与可能的其他元素一起被底层 WindowProc 绘制为非客户区的一部分.

The close button there is not a window, and it does not have a separate HWND. Instead, it is painted along with possibly other elements by underlying WindowProc as a part of non-client area.

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