IDvdControl2::ActivateAtPosition
| Microsoft DirectShow 9.0 |
IDvdControl2::ActivateAtPosition
The ActivateAtPosition method activates the menu button under the mouse pointer position.
Syntax
HRESULT ActivateAtPosition( POINT point );
Parameters
point
[in] Point on the client window area, in screen pixel coordinates.
Return Values
Returns one of the following values.
| Return code | Description |
| S_OK | The click occurred in the highlighted button rectangle, and the button was successfully activated. |
| E_INVALIDARG | The point lies outside the valid video region. |
| E_UNEXPECTED | The button is present but is not working. |
| VFW_E_DVD_INVALIDDOMAIN | The DVD Navigator is not in a menu domain. |
| VFW_E_DVD_NO_BUTTON | There is no menu button under the mouse pointer position. |
| VFW_E_DVD_OPERATION_INHIBITED | The operation is inhibited by user operation (UOP) control. |
Remarks
The mouse pointer coordinates are relative to the upper left of the client area, which isn't necessarily the video display area if the video is in letterbox format.
Use this method when the user is navigating through a menu by moving the mouse pointer directly over the menu buttons. If the user is using the relative buttons to navigate the menu, use ActivateButton rather than ActivateAtPosition.
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 |
| None | DVD_DOMAIN_VideoManagerMenu DVD_DOMAIN_VideoTitleSetMenu |
Requirements
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also