Hi,
everything is fine now.
I've tested it with the Windows Messagebox. The first time I've tried it, the window hasn't been created, although I thought it has been.
And the second time, the window allready has been destroyed, although I thought it hasn't.
I now called another procedure during the running program and it showed me the widget windowhandle I'd expected. And even createwindow works fine now.
I use it, until I probably made up a own widget for fpgui.
Greetings relocate