IOverlay::Advise (Windows CE 5.0)
This method sets up an advise link for the overlay events specified by the dwInterests parameter.
HRESULTAdvise(IOverlayNotify* pOverlayNotify,DWORDdwInterests);
Parameters
- pOverlayNotify
[in] Notification interface. - dwInterests
[in] Callbacks of interest, which can be any subset of the following events.Value Description ADVISE_NONE No changes. ADVISE_CLIPPING Change in clipping region (synchronized with the window). ADVISE_PALETTE Change in palette. ADVISE_COLORKEY Change of chroma key value. ADVISE_POSITION Change in position of video window (not synchronized with the window). ADVISE_ALL All of the above.
Return Values
None.
Remarks
This method sets up an advise link for the IOverlayNotify interface to receive notifications.
If one of these events occurs, the appropriate entry point in the pOverlayNotify parameter passed in is called (IOverlayNotify::OnClipChange, IOverlayNotify::OnColorKeyChange, IOverlayNotify::OnPaletteChange, or IOverlayNotify::OnPositionChange).
Only one advise link can be set on any given IOverlay interface.
Trying to set another notification interface on second and subsequent calls returns VFW_E_ADVISE_ALREADY_SET.
You can cancel an advise link by using IOverlay::Unadvise.
Requirements
DirectShow applications and DirectShow filters have different include file and link library requirements.
For more information, see Setting Up the Build Environment.
Pocket PC: Windows Mobile 5.0 and later
Smartphone: Windows Mobile 5.0 and later
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
See Also
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