EM_GETOLEINTERFACE Message

The EM_GETOLEINTERFACE message retrieves an IRichEditOle object that a client can use to access a rich edit control's Component Object Model (COM) functionality.

Syntax

To send this message, call the SendMessage function as follows.


lResult = SendMessage(
    // returns LRESULT in lResult
   (HWND) hWndControl,
    // handle to destination control
   (UINT) EM_GETOLEINTERFACE,
    // message ID
   (WPARAM) wParam,
    // = (WPARAM) () wParam;
   (LPARAM) lParam
    // = (LPARAM) () lParam;

);

Parameters

wParam
This parameter is not used; it must be zero.
lParam
Pointer to a pointer that receives the IRichEditOle object. The control calls the AddRef method for the object before returning, so the calling application must call the IUnknown::Release method when it is done with the object.

Return Value

If the operation succeeds, the return value is a nonzero value.
If the operation fails, the return value is zero.

Message Information

Header Declared in Richedit.h
Minimum operating systems Windows 95, Windows NT 4.0