hwnd (HWND) - input
pszPath (PSZ) - input
If NULL, the files are placed in the current directory.
pszTypes (PSZ) - input
This string is of the form:
type[,type...]
When this pointer is NULL, any type of file will be accepted.
ulDefaultOp (ULONG) - input
The operation is either DO_MOVE or DO_COPY.
ulRsvd (ULONG) - input
rc (BOOL) - returns
TRUE