SendMessage (F4) fails when sending it to window

Posted by Olli on Stack Overflow See other posts from Stack Overflow or by Olli
Published on 2010-06-14T09:40:00Z Indexed on 2010/06/14 9:42 UTC
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sendmessage

Working with Visual Studio 6 (VC++ 6.0) I'm using an ActiveX datepicker control which I fail to show expanded by default (3006216). Alternatively I'm trying to send a keyboard message (F4) to my window to open up the control, but nothing happens when I do so...

// try 1: use the standard window handle
LRESULT result = ::SendMessage(m_hWnd,VK_F4, 0, 0);
// try 2: use just use the SendMessage
result = SendMessage(VK_F4);

result is always 0 - what can I do to test/verify the message sending?

Thanks in acvance a lot...

Olli

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