Set window's owner without activating/bringing to front

Question

I've been googling for days for how to set window's owner without activating/bringing owner to front and couldn't manage to find it. Currently I'm using winapi:

SetWindowLong(hwndWindow, GWL_HWNDPARENT, hwndOwner); // GWL_HWNDPARENT = -8

or built in wrap:

new WindowInteropHelper(window) { Owner = owner };

Both works fine for setting owner, but they are bringing owner window to front which causes problems when there are a lot of windows.

Thanks for help!

Answer 1

This helped:

Please see: https://msdn.microsoft.com/en-us/library/windows/desktop/ms633541%28v=vs.85%29.aspx Pay attention for the note in "Remarks" about the requirement to change the styles and synchronize the UISTATE.
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Sergey Alexandrovich