IMSVidPlayback::Step method (segment.h)
[The feature associated with this page, Microsoft TV Technologies, is a legacy feature. Microsoft strongly recommends that new code does not use this feature.]
The Step method steps through the video stream by a specified number of frames.
Syntax
HRESULT Step(
[in] long lStep
);
Parameters
[in] lStep
Specifies how many frames to step. If lStep is 1, the Video Control steps forward one frame. If lStep is a number N greater than 1, the Video Control skips N - 1 frames and shows the Nth frame.
Return value
The method returns an HRESULT. Possible values include the following.
| Return code | Description |
|---|---|
|
Not implemented. |
|
The graph is not built. Call the Build or View method on the Video Control. |
|
The method succeeded. |
Note��The value ERROR_INVALID_STATE is converted to an HRESULT with the HRESULT_FROM_WIN32 macro.
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Remarks
Although a negative value for lStep is defined as stepping backward, that functionality is currently not implemented, and the method returns E_NOTIMPL.
Call the IMSVidCtl::Build or IMSVidCtl::View method before calling this method.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows�XP [desktop apps only] |
| Minimum supported server | None supported |
| Target Platform | Windows |
| Header | segment.h (include Msvidctl.h) |