This
parameter can contain any of the following flags:
MCI_NOTIFY
A notification message will be posted
to the window specified in the hwndCallback field of the data structure
pointed to by the pParam2 parameter. The notification will be posted
when the action indicated by this message is completed or when an error
occurs.
MCI_WAIT
Control
is not to be returned until the action indicated by this message is completed
or an error occurs.
MCI_CONVERT
This
flag specifies that image format conversion will be performed. Data is
assumed to be in the device-specific format.
If MCI_CONVERT is specified, the data must be in the OS/2 uncompressed bit-map
format.