EM_SETOLEINTERFACE  3BV0IG 

The EM_SETOLEINTERFACE message gives a rich edit control an IRichEditOleCallback object that the control uses to get OLE-related resources and information from the client.

EM_SETOLEINTERFACE

wParam = 0;

lParam = (LPARAM) (IRichEditOleCallback FAR *) lpObj;

Parameters

lpObj

Pointer to an IRichEditOleCallback object. The control calls the AddRef function for the object before returning.

Return Values

Returns a nonzero value if successful or zero otherwise.