IOleInPlaceSiteWindowless interface (ocidl.h)
Extends the IOleInPlaceSiteEx interface. IOleInPlaceSiteWindowless works with IOleInPlaceObjectWindowless which is implemented on the windowless object. Together, these two interfaces provide services to a windowless object from its container allowing the windowless object to:
- Process window messages
- Participate in drag and drop operations
- Perform drawing operations
A windowless object can enter the in-place active state without requiring a window or the resources associated with a window. Instead, the object's container provides the object with many of the services associated with having a window.
Inheritance
The IOleInPlaceSiteWindowless interface inherits from IOleInPlaceSiteEx. IOleInPlaceSiteWindowless also has these types of members:
Methods
The IOleInPlaceSiteWindowless interface has these methods.
| IOleInPlaceSiteWindowless::AdjustRect Adjusts a specified rectangle if it is entirely or partially covered by overlapping, opaque objects. |
| IOleInPlaceSiteWindowless::CanWindowlessActivate Informs an object if its container can support it as a windowless object that can be in-place activated. |
| IOleInPlaceSiteWindowless::GetCapture Called by an in-place active, windowless object to determine whether it still has the mouse capture. |
| IOleInPlaceSiteWindowless::GetDC Provides an object with a handle to a device context for a screen or compatible device from its container. |
| IOleInPlaceSiteWindowless::GetFocus Called by an in-place active, windowless object to determine whether it still has the keyboard focus. |
| IOleInPlaceSiteWindowless::InvalidateRect Enables an object to invalidate a specified rectangle of its in-place image on the screen. |
| IOleInPlaceSiteWindowless::InvalidateRgn Enables an object to invalidate a specified region of its in-place image on the screen. |
| IOleInPlaceSiteWindowless::OnDefWindowMessage Invokes the default processing for all messages passed to an object. |
| IOleInPlaceSiteWindowless::ReleaseDC Releases the device context previously obtained by a call to IOleInPlaceSiteWindowless::GetDC. |
| IOleInPlaceSiteWindowless::ScrollRect Enables an object to scroll an area within its in-place active image on the screen. |
| IOleInPlaceSiteWindowless::SetCapture Enables an in-place active, windowless object to capture all mouse messages. |
| IOleInPlaceSiteWindowless::SetFocus Sets the keyboard focus for a UI-active, windowless object. |
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 |