IBasicVideo::put_SourceLeft
| Microsoft DirectShow 9.0 |
IBasicVideo::put_SourceLeft
The put_SourceLeft method sets the x-coordinate of the source rectangle.
Syntax
HRESULT put_SourceLeft( long SourceLeft );
Parameters
SourceLeft
[in] Specifies the x-coordinate, in pixels.
Return Values
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
| E_INVALIDARG | Invalid argument. |
| S_OK | Success. |
| VFW_E_NOT_CONNECTED | The video renderer's input pin is not connected. |
Remarks
This method moves the entire source rectangle to the left or right. It does not change the width of the source rectangle. If the value of SourceLeft would place the right edge of the rectangle beyond the edge of the video frame, the method returns E_INVALIDARG. To crop the video, call put_SourceWidth to adjust the width, before calling put_SourceLeft. (Or call SetSourcePosition to set the entire source rectangle at once.)
Requirements
Header: Declared in Control.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also