The MCIWNDM_CHANGESTYLES message changes the styles used by the MCIWnd window. You can send this message explicitly or by using the MCIWndChangeStyles macro.
MCIWNDM_CHANGESTYLES
wParam = (WPARAM) (UINT) mask;
lParam = (LPARAM) (LONG) value;
Returns zero.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in vfw.h.
MCIWnd Window Class Overview, MCIWnd Messages, MCIWndCreate, MCIWndChangeStyles