#pragma once
#include "stdafx.h"
#include "MBGroupChatFrame.h"
 


class AFX_EXT_CLASS CMBAMShareDropTarget :public IDropTarget
{
public:
	CMBAMShareDropTarget();	 
	virtual ~CMBAMShareDropTarget();
protected:
	int				   m_nRef;
	IDropTargetHelper* m_piDropHelper;  
	IDataObject*	   m_pDataObj;
	DWORD			   m_dwAcceptKeyState; 
public:
	HWND               m_hWnd;
protected:
	// IUnknown
	virtual HRESULT STDMETHODCALLTYPE QueryInterface(
		/* [in] */ REFIID riid,
		/* [iid_is][out] */ __RPC__deref_out void __RPC_FAR *__RPC_FAR *ppvObject);
	 

	virtual ULONG STDMETHODCALLTYPE AddRef(void);

	virtual ULONG STDMETHODCALLTYPE Release(void);

	virtual HRESULT STDMETHODCALLTYPE DragEnter(
		/* [unique][in] */ __RPC__in_opt IDataObject *pDataObj,
		/* [in] */ DWORD grfKeyState,
		/* [in] */ POINTL pt,
		/* [out][in] */ __RPC__inout DWORD *pdwEffect);
	 

	virtual HRESULT STDMETHODCALLTYPE DragOver(
		/* [in] */ DWORD grfKeyState,
		/* [in] */ POINTL pt,
		/* [out][in] */ __RPC__inout DWORD *pdwEffect);
	 
	virtual HRESULT STDMETHODCALLTYPE DragLeave(void); 
 private:
	//ÉèÖÃÍϷŹý³ÌÖеÄÃèÊö ÐÅÏ¢
	bool    SetDropDescription(DROPIMAGETYPE nImageType, LPCWSTR lpszText, LPCWSTR lpszInsert=NULL);
	virtual void GetInsertMsg(std::wstring &szMessage,std::wstring &szInsert);	 // µÃµ½²åÈëÐÅÏ¢
};
	 
class AFX_EXT_CLASS CMBAMShareDropTargetImpl: public CMBAMShareDropTarget
{
public:
	CMBAMShareDropTargetImpl(CMBGroupChatFrame *pChatFrame);
	~CMBAMShareDropTargetImpl(void);
private:
	CMBGroupChatFrame	*m_pGroupChatFrame;
private:
	virtual void GetInsertMsg(std::wstring &szMessage,std::wstring &szInsert);	 // µÃµ½²åÈëÐÅÏ¢
public:
	virtual HRESULT STDMETHODCALLTYPE Drop(
		/* [unique][in] */ __RPC__in_opt IDataObject *pDataObj,
		/* [in] */ DWORD grfKeyState,
		/* [in] */ POINTL pt,
		/* [out][in] */ __RPC__inout DWORD *pdwEffect);	 

};