How to keep window visible at all times, but not force it to be on top

问题

I'm creating a "desktop gadget" of sorts, I've disabled manual minimizing of the window, but now there is another problem: the system can still hide the window if the user presses Windows+D, for example.

When hidden that way, no usual minimize/resize/visibility events are fired. I want to do something almost like TopMost, but without forcing the window order.

Maybe it's possible to install a global shortcut event using win32 API, and briefly set TopMost to true, but that sounds very hackish.

I found one solution, but it does not seem to work on Windows 10: Keeping window visible through "Show Desktop"/Win+D The other common option, which would be writing an actual desktop gadget, is not possible on Windows 10, given their deprecation.

Are there any other methods to keep a window visible (but not on top of the screen) at all moments?

回答1:

This function is working for me:

BOOL FixShowDesktop(HWND hWnd)
{
    HWND hWndTmp = FindWindowEx(NULL, NULL, L"Progman", NULL);
    if (hWndTmp)
    {
        hWndTmp = FindWindowEx(hWndTmp, NULL, L"SHELLDLL_DefView", NULL);
        if (hWndTmp)
        {
            SetWindowLongPtr(hWnd, -8, (LONG_PTR)hWndTmp);
            return TRUE;
        }
    }
    return FALSE;
}

Note, this code is a bit better then from Keeping window visible through "Show Desktop"/Win+D because the window can be overflowed by other windows (like any other window). Using SetParent places window under all other windows.

来源：https://stackoverflow.com/questions/35045060/how-to-keep-window-visible-at-all-times-but-not-force-it-to-be-on-top