IOleInPlaceSiteWindowless::CanWindowlessActivate method (ocidl.h)

Informs an object if its container can support it as a windowless object that can be in-place activated.

Syntax

HRESULT CanWindowlessActivate();

This method returns S_OK if the object can activate in-place without a window.

If this method returns S_OK, the container can dispatch events to it using IOleInPlaceObjectWindowless.

If this method returns S_FALSE, the object should create a window and behave as a normal compound document object.

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	ocidl.h