CBaseControlVideo.get_SourceTop method
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The get_SourceTop method retrieves the top coordinate of the current source rectangle.
Syntax
HRESULT get_SourceTop(
long *pSourceTop
);
Parameters
-
pSourceTop
-
Pointer to the top coordinate of the source rectangle.
Return value
Returns an HRESULT value that depends on the implementation; can be one of the following values, or other values not listed.
| Return code | Description |
|---|---|
|
Failure. |
|
NULL pointer argument. |
|
The operation cannot be performed because the pins are not connected. |
|
Success. |
Remarks
This member function implements the IBasicVideo::get_SourceTop method.
An application can change the source and destination rectangles for the video through the IBasicVideo interface. The source rectangle affects which section of the native video source will appear on the display; the destination rectangle affects where the video will appear when played. The destination rectangle is relative to the client area of the window in which it is playing. The upper-left corner of the window is coordinate (0,0).
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|