IOleInPlaceObjectWindowless interface (ocidl.h)
Enables a windowless object to process window messages and participate in drag and drop operations. It is derived from and extends the IOleInPlaceObject interface.
A small object, such as a control, does not need a window of its own. Instead, it can rely on its container to dispatch window messages and help the object to participate in drag and drop operations. The container must implement the IOleInPlaceSiteWindowless interface. Otherwise, the object must act as a normal compound document object and create a window when it is activated.
Inheritance
The IOleInPlaceObjectWindowless interface inherits from IOleInPlaceObject. IOleInPlaceObjectWindowless also has these types of members:
Methods
The IOleInPlaceObjectWindowless interface has these methods.
| IOleInPlaceObjectWindowless::GetDropTarget Retrieves the IDropTarget interface for an in-place active, windowless object that supports drag and drop. |
| IOleInPlaceObjectWindowless::OnWindowMessage Dispatches a message from a container to a windowless object that is in-place active. |
Requirements
| 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 |