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

#include "stdafx.h"   
#include "afxole.h" 
#include "DropSource.h" 
 
CDropSource::CDropSource() 
{ 
} 
 
 
CDropSource::~CDropSource() 
{ 
} 
 
 
DROPEFFECT CDropSource::StartDragging(DWORD Data, RECT * rClient, CPoint * MousePos) 
{ 
      
	//Use the following if you are only using text 
	//HGLOBAL hgData=GlobalAlloc(GPTR,10 );    
	HGLOBAL hgData=GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT ,10 ); 
    ASSERT(hgData!=NULL); 
     
     
	LPCSTR  lpData=(LPCSTR)GlobalLock(hgData); 
    ASSERT(lpData!=NULL); 
	ltoa( Data, (char*)lpData, 10 ); 
 
	//Use the following if you are only using text 
    //CacheGlobalData(CF_TEXT, hgData);    
	CacheGlobalData(CF_OWNERDISPLAY, hgData);    
   
    DROPEFFECT dropEffect=DoDragDrop(DROPEFFECT_COPY|DROPEFFECT_MOVE,(LPCRECT)rClient);   
 
    if((dropEffect&DROPEFFECT_MOVE)==DROPEFFECT_MOVE)      
        CompleteMove();     
 
    LPARAM lparam; 
 
    lparam=MousePos->y;  
    lparam=lparam<<16; 
    lparam &= MousePos->x;                          
     
    SendMessage(GetActiveWindow(), WM_LBUTTONUP,0,lparam);         
 
    Empty(); 
	return dropEffect; 
}