ICM_ABOUT message
The ICM_ABOUT message notifies a video compression driver to display its About dialog box or queries a video compression driver to determine if it has an About dialog box. You can send this message explicitly or by using the ICAbout macro.
ICM_ABOUT
wParam = (DWORD_PTR) (UINT_PTR) hwnd;
lParam = 0;
Parameters
-
hwnd
-
Handle to the parent window of the displayed dialog box. You can also determine if a driver has an About dialog box by specifying -1 in this parameter, as in the ICQueryAbout macro. The driver returns ICERR_OK if it has an About dialog box or ICERR_UNSUPPORTED otherwise.
Return Value
Returns ICERR_OK if the driver supports this message or ICERR_UNSUPPORTED otherwise.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|