www.pudn.com > DandD.zip > DropTarget.cpp

#include "stdafx.h" 
#include "afxole.h"  
#include "DropTarget.h"  
 
CDropTarget::CDropTarget() {} 
 
CDropTarget::~CDropTarget() {}   
 
DROPEFFECT CDropTarget::OnDragEnter(CWnd* pWnd, COleDataObject*  
                           pDataObject, DWORD dwKeyState, CPoint point ) 
{        
    if((dwKeyState&MK_CONTROL) == MK_CONTROL) 
        return DROPEFFECT_COPY; // Copy the source text 
    else 
        return DROPEFFECT_MOVE; // Move the source text 
}  
 
 
void CDropTarget::OnDragLeave(CWnd* pWnd) 
{ 
    COleDropTarget:: OnDragLeave(pWnd); 
} 
  
 
DROPEFFECT CDropTarget::OnDragOver(CWnd* pWnd, COleDataObject*  
           pDataObject, DWORD dwKeyState, CPoint point ) 
{ 
    if((dwKeyState&MK_CONTROL) == MK_CONTROL) 
        return DROPEFFECT_COPY; 
    else 
        return DROPEFFECT_MOVE;     
} 
 
 
BOOL CDropTarget::OnDrop(CWnd* pWnd, COleDataObject* pDataObject,  
                 DROPEFFECT dropEffect, CPoint point ) 
{            
    HGLOBAL  hGlobal; 
    LPCSTR   pData; 
 
    hGlobal=pDataObject->GetGlobalData(CF_OWNERDISPLAY); //Change to CF_TEXT if you are only working with text 
 
    pData=(LPCSTR)GlobalLock(hGlobal);     
    ASSERT(pData!=NULL);  
                    
	pWnd->SetWindowText( pData ); 
 
    GlobalUnlock(hGlobal); 
 
    return TRUE; 
} 
 
///////////////////////////////////////////////////////////////////////////// 
//  
 
BOOL CDropTarget::Initialize(CWnd* wnd) 
{ 
    BOOL success = Register(wnd); 
    if(!success ) 
		return FALSE; 
	return TRUE; 
 
}