获取父窗口的正确方法 [英] The correct way of getting the parent window

问题描述

MSDN 关于 GetParent 函数的说明如下:

The MSDN says the following about the GetParent function:

获取父窗口而不是所有者，而不是使用 GetParent，而是使用 GetAncestor 和GA_PARENT 标志.

To obtain the parent window and not the owner, instead of using GetParent, use GetAncestor with the GA_PARENT flag.

但是当为没有父窗口的窗口调用GetAncestor(hWnd, GA_PARENT);时，它返回桌面窗口，而GetParent返回NULL.

But when calling GetAncestor(hWnd, GA_PARENT); for a window that doesn't have a parent, it returns the desktop window, while GetParent returns NULL.

那么获取父母(而不是所有者)并在没有时获取 NULL 的正确方法是什么?

So what is the correct way of getting a parent (and not the owner), and getting NULL if there are none?

当然我可以检查 GetAncestor 是否返回桌面窗口，但这对我来说似乎是一个黑客.

Of course I could check whether GetAncestor returns the desktop window, but that seems like a hack to me.

推荐答案

这是我的想法:

//
// Returns the real parent window
// Same as GetParent(), but doesn't return the owner
//
HWND GetRealParent(HWND hWnd)
{
    HWND hParent;

    hParent = GetAncestor(hWnd, GA_PARENT);
    if(!hParent || hParent == GetDesktopWindow())
        return NULL;

    return hParent;
}

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