I have a "MDI" interface with a main form at the highest level; this then uses the document manager to house 2 more levels of user controls
(ie main form contains XtraUserControLevel1, then XtraUserControLevel1 contains XtraUserControLevel2).
How do I use an Overlay form to only block a new "tab" of XtraUserControLevel1?
ie exception of "Handle" is thrown when I do SplashScreenManager.ShowOverlayForm(this ...
However, if i pass the main form's handle all the way down to XtraUserControLevel2, then I'm able to block - but obviously it'd block all tabs instead of blocking each tab.
And - I don't think I can house a form within another form.
So in this overlay-form-for-tabbed-documents, what is the answer for that "control"?
btw, the documentation could provide better details than just stating
"You can only show an Overlay Form over a control/form that has a handle (see System.Windows.Forms.Control.IsHandleCreated). Otherwise, an exception is thrown. "
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