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| Microsoft DirectShow 9.0 |
IVideoWindow::NotifyOwnerMessage
The NotifyOwnerMessage method forwards a message to the video window.
Syntax
HRESULT NotifyOwnerMessage(
OAHWND hwnd,
long uMsg,
LONG_PTR wParam,
LONG_PTR lParam
);
Parameters
hwnd
[in] Handle to the window, as an OAHWND value.
uMsg
[in] Specifies the message.
wParam
[in] Message parameter.
lParam
[in] Message parameter.
Return Values
Possible return values include the following:
| Value | Description |
| S_OK | Success. |
| VFW_E_NOT_CONNECTED | The video renderer filter is not connected. |
Remarks
The Filter Graph Manager calls this method to pass various messages to the renderer, including the following:
- WM_ACTIVATEAPP
- WM_DEVMODECHANGE
- WM_DISPLAYCHANGE
- WM_PALETTECHANGED
- WM_PALETTEISCHANGING
- WM_QUERYNEWPALETTE
- WM_SYSCOLORCHANGE
Requirements
Header: Declared in Control.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also