In my WPF application, I host Win32 content using HwndHost. However, creating a HwndHost does not create the native window. Rather, this is done in the overridden BuildWindowCore() method which is called sometime later by WPF.
My hosted content needs the window handle of the native window for its own initialization. Unfortunately, there is no way I can force the creation of the window (i.e. having WPF call the BuildWindowCore), so I have a second thread which polls the HwndHost until it has been initialized.
In .NET 4.0 / WPF 4.0, a new method WindowInteropHelper.EnsureHandle() was added. I had hoped this would resolve the situation, but it only works for a Window, not a HwndHost (which doesn't derive from Window). Do you have a suggestion what I could do instead?