| Microsoft DirectShow 9.0 |
IVMRWindowlessControl9 Interface
The IVMRWindowlessControl9 interface controls how the Video Mixing Renderer Filter 9 (VMR-9) renders a video stream within a container window. Applications must first put the VMR-9 into windowless mode before using the methods on this interface.
In addition to the methods inherited from IUnknown, the IVMRWindowlessControl9 interface exposes the following methods.
| Method | Description |
| DisplayModeChanged | Informs the VMR that a WM_DISPLAYCHANGE message has been received by the application. |
| GetAspectRatioMode | Retrieves the current aspect ratio display mode. |
| GetBorderColor | Retrieves the current border color used by the VMR. |
| GetCurrentImage | Retrieves a copy of the current image being displayed by the VMR. |
| GetMaxIdealVideoSize | Retrieves the maximum video size that the VMR can display without incurring significant performance or image quality degradation. |
| GetMinIdealVideoSize | Retrieves the minimum video size that the VMR can display without incurring significant performance or image quality degradation. |
| GetNativeVideoSize | Retrieves the un-stretched video size and aspect ratio of the video. |
| GetVideoPosition | Retrieves the current source and destination rectangles used to display the video. |
| RepaintVideo | Repaints the current video frame. |
| SetAspectRatioMode | Sets the current aspect ratio display mode. |
| SetBorderColor | Sets the border color to be used by the VMR. |
| SetVideoClippingWindow | Specifies the container window that video should be clipped to. |
| SetVideoPosition | Sets the source and destination rectangles for the video. |
Requirements
Header: Include D3d9.h, Vmr9.h.
Library: Use Strmiids.lib.