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There is no "Main window" concept, the author of that object just assumed that the first would be it. Further more, MSDN says "Brings the thread that created the specified window into the foreground"
– Deanna
Commented Feb 1, 2012 at 19:10
Good info. Apparently I fell into the trap. Anyway, FindWindow, given that you know the title of the window you want, gives the right answer.
– KeithS
Commented Feb 1, 2012 at 22:35
+1 @KeithS what find window method are you using here. I take it that you are talking about an Interop method?
– MoonKnight
Commented Nov 29, 2012 at 17:34
Yes, a P/Invoke call to FindWindow in the same WinAPI dll as ShowWindow.
– KeithS
Commented Nov 29, 2012 at 17:52
1

+1 - FindWindow was the answer in my case too. MainWindowHandle worked fine, until I would hide the window on minimize & made a TrayIcon visible instead. In this case, MainWindowHandle returned the handle of the TrayIcon... Gotta love that beautiful win32 API, huh? :D
– nevelis
Commented Jan 25, 2014 at 19:04

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