Invoking OLE API Functions
For information on invoking OLE API functions, see:
OLE Mode Syntax
How Win32 Functions Compare with OLE Functions
Comparing Win32 Code to OLE Code
Invoking OLE Functions
How OLE Mode Works
Passing and Receiving Strings from OLE Functions
Passing GUIDs (and IIDs and CLSIDs)
Passing VARIANTs
Passing COM Interface Pointers