WM_CAP_DRIVER_GET_CAPS message
The WM_CAP_DRIVER_GET_CAPS message returns the hardware capabilities of the capture driver currently connected to a capture window. You can send this message explicitly or by using the capDriverGetCaps macro.
WM_CAP_DRIVER_GET_CAPS
wParam = (WPARAM) (wSize);
lParam = (LPARAM) (LPVOID) (LPCAPDRIVERCAPS) (psCaps);
Parameters
-
wSize
-
Size, in bytes, of the structure referenced bys.
-
psCaps
-
Pointer to the CAPDRIVERCAPS structure to contain the hardware capabilities.
Return Value
Returns TRUE if successful or FALSE if the capture window is not connected to a capture driver.
Remarks
The capabilities returned in CAPDRIVERCAPS are constant for a given capture driver. Applications need to retrieve this information once when the capture driver is first connected to a capture window.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|