IDvdControl2::ActivateButton 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 ActivateButton method activates the currently selected menu button.
Syntax
HRESULT ActivateButton();
Return value
Returns one of the following values.
| Return code | Description |
|---|---|
|
Success. |
|
The DVD Navigator is in an invalid domain. |
|
UOP control prohibits the DVD Navigator from entering a paused state. |
|
No button is selected. |
Remarks
An application might or might not have four relative buttons on the side of the video display to represent the buttons on a physical remote control. These enable a user to select menu buttons but not activate them. A fifth button is required to activate the selected button. Call ActivateButton in response to a mouse click on the fifth button.
The following table shows the Annex J command name to which this method name corresponds, and the domains in which this method is valid.
| Annex J Command Name | Valid Domains |
| Button_Activate |
|
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 |