IDvdInfo2::GetCurrentAngle method (strmif.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetCurrentAngle method retrieves the number of available angles in the current angle block and the currently selected angle number.
Syntax
HRESULT GetCurrentAngle(
[out] ULONG *pulAnglesAvailable,
[out] ULONG *pulCurrentAngle
);
Parameters
[out] pulAnglesAvailable
Receives the number of available angles. There are up to nine angles in an angle block, numbered 1 through 9. If the value equals 1, then the DVD Navigator is not in an angle block.
[out] pulCurrentAngle
Receives the current angle number.
Return value
Returns one of the following HRESULT values.
| Return code | Description |
|---|---|
|
Success. |
|
Invalid argument. |
|
DVD Navigator is not initialized or not in a valid domain. |
Remarks
Note that angle and menu button indexes are 1-based, while audio and subpicture stream indexes are 0-based. When the DVD Navigator is about to enter an angle block, it sends the application an EC_DVD_ANGLES_AVAILABLE event notification with the lParam set to 1. Applications will typically call GetCurrentAngle and IDvdControl2::SelectAngle within their event handler for EC_DVD_ANGLES_AVAILABLE.
This method is demonstrated in the DVDSample application in CAngleDlg::MakeAngleList.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |