如何使子窗口最顶层? [英] How can I make a child window topmost?

问题描述

我有一个父窗体，其中有一些子窗口(不是窗体 - 只是窗口，例如标签控件).在某些情况下，我希望将其中一个子窗口绘制在其他子窗口的上方"，以在整个主窗体上显示一条消息.

I have a parent form, with some child windows (not forms - just windows, for example label controls) inside it. Under certain circumstances, I want one of those child windows to be drawn "above" the others, to display a message over the entire main form.

我已经尝试在子窗口上设置 HWND_TOPMOST 和 HWND_TOP，但它似乎根本没有任何效果.是我做错了什么，还是 HWND_TOPMOST 和 HWND_TOP 只适用于表单，而不是表单中的控件?

I've tried setting HWND_TOPMOST and HWND_TOP on the child windows, but it doesn't seem to have any effect at all. Am I doing something wrong, or do HWND_TOPMOST and HWND_TOP only work on forms, as opposed to controls within forms?

谢谢.

推荐答案

HWND_TOPMOST 仅适用于顶级窗口，不适用于子窗口.

HWND_TOPMOST only applies to top level windows, not child windows.

使用带有 HWND_TOP 标志的 SetWindowPos 来更改目标子窗口的 zorder，使其位于其兄弟窗口中 zorder 的顶部.

Use SetWindowPos withthe HWND_TOP flag to change the target child window's zorder to put it at the top of the zorder among its siblings.

请注意，子窗口中的 zorder 仅适用于同级 - 具有相同父级的 hwnd.

Note that zorder in child windows only applies to siblings - hwnds with the same parent.

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