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

// DragList.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "DAD.h" 
#include "DragList.h" 
#include "MyObject1.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CDragList 
 
CDragList::CDragList() 
{ 
} 
 
CDragList::~CDragList() 
{ 
} 
 
 
BEGIN_MESSAGE_MAP(CDragList, CListBox) 
	//{{AFX_MSG_MAP(CDragList) 
	ON_WM_LBUTTONDOWN() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CDragList message handlers 
 
BOOL CDragList::OnDrop(CWnd* pWnd, COleDataObject* pDataObject,DROPEFFECT dropEffect, CPoint point ) 
{ 
    HGLOBAL  hGlobal; 
    int      Pos; 
 
	//hGlobal=pDataObject->GetGlobalData(CF_TEXT); 
	hGlobal=pDataObject->GetGlobalData(CF_OWNERDISPLAY); 
	 
	LPCSTR pData=(LPCSTR)GlobalLock(hGlobal);     
    ASSERT(pData!=NULL);  
 
	CMyObject1* MyObj = (CMyObject1*)atol( pData ); 
    Pos=((CListBox*)pWnd)->AddString(MyObj->Data); 
	((CListBox*)pWnd)->SetItemDataPtr(Pos,  MyObj ); 
    GlobalUnlock(hGlobal); 
    if(Pos < 0) 
        return FALSE; 
 
 
    return TRUE; 
} 
 
void CDragList::OnLButtonDown(UINT nFlags, CPoint point)  
{ 
	CListBox::OnLButtonDown(nFlags, point);	 
	int Pos = GetCurSel(); 
	if( LB_ERR == Pos) 
		return; 
 
	if( 0 == GetItemDataPtr( Pos ) ) 
		; 
		//Make the object or something 
	 
	RECT rClient; 
    GetClientRect(&rClient); 
	 
	StartDragging((DWORD)GetItemDataPtr( Pos ), &rClient, &point); 
} 
 
void CDragList::CompleteMove() 
{ 
	int nItem = nItem=GetCurSel(); 
	if(nItem==LB_ERR) 
        return;	 
	DeleteString(nItem); 
	SetCurSel(nItem-1);                                    
}