Postmessage(Handle,WM_RBUTTONDOWN,0,0) an falscher position

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Die Position wird laut MSDN nur über lParam kodiert.

Zitat von [url:

http://msdn.microsoft.com/en-us/library/aa923238.aspx[/url]]xPos Value of the low-order word of lParam. Specifies the x-coordinate of the pointer, relative to the upper-left corner of the client area.
yPos Value of the high-order word of lParam. Specifies the y-coordinate of the pointer, relative to the upper-left corner of the client area.

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