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WM_CAP_FILE_ALLOCATE
The WM_CAP_FILE_ALLOCATE message creates (preallocates) a capture file of a
specified size. You can send this message explicitly or by using the capFileAlloc macro.
WM_CAP_FILE_ALLOCATE
wParam = (WPARAM) 0;
lParam = (LPARAM) (DWORD) (dwSize);
Parameters
dwSize
Size, in bytes, to create the capture file.
Return Values
Returns TRUE if successful or FALSE otherwise.
If an error occurs and an error callback function is set using the WM_CAP_SET_CALLBACK_ERROR message, the error callback function is called.
Remarks
You can improve streaming capture performance significantly by preallocating a
capture file large enough to store an entire video clip and by defragmenting
the capture file before capturing the clip.
See Also
capFileAlloc, WM_CAP_SET_CALLBACK_ERROR
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