IDvdInfo2::GetButtonAtPosition 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetButtonAtPosition method retrieves the button located at the specified point within the display window.
Syntax
HRESULT GetButtonAtPosition(
[in] POINT point,
[out] ULONG *pulButtonIndex
);
Parameters
[in] point
Current mouse pointer position as retrieved through the Win32 WM_MOUSEMOVE message.
[out] pulButtonIndex
Receives the index (from 1 through 36) of the button at the current mouse pointer position.
Return value
Returns one of the following HRESULT values.
| Return code | Description |
|---|---|
|
Success. |
|
Invalid argument. |
|
The puButtonIndex parameter is invalid. |
|
No button at point. |
Remarks
This method is typically called in response to a mouse pointer move within a DVD menu display window. Be sure to check for success in the HRESULT before trying to retrieve the button number; this method only sets the value of puButtonIndex if a button is found at the specified point. DVD buttons do not necessarily have highlighted rectangles, button rectangles can overlap, and button rectangles do not always correspond to the visual representation of the buttons.
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 |