Drag & Drop in FlexGrid Using Arbitrary Formats

#if !defined(AFX_SOURCEGRID_H__58A49E35_5888_4A98_B51E_BD8C96514D76__INCLUDED_)
#define AFX_SOURCEGRID_H__58A49E35_5888_4A98_B51E_BD8C96514D76__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// SourceGrid.h : header file
//
#include "MSFlexGrid.h"
#include <afxctl.h>

/////////////////////////////////////////////////////////////////////////////
// CSourceGrid window
const int SOURCE_ROWS = 2;
const int SOURCE_COLUMNS = 5;
const int RESOURCE_COUNT = SOURCE_ROWS*SOURCE_COLUMNS;

class CSourceGrid;
struct CellData
{
	int i_resourceNumber;
	CSourceGrid * p_gridSource;
};

class CSourceGrid : public CMSFlexGrid
{
// Construction
public:
	CSourceGrid();

// Attributes
public:
	void v_GetCurrentCellData(CellData & r_currentCellData);
	LPDISPATCH GetResourceIcon(int resourceNumber);

// Operations
public:
	static void DitherBlt (HDC hdcDest, int nXDest, int nYDest, int nWidth, 
				int nHeight, HBITMAP hbm, int nXSrc, int nYSrc);

	void AssignResource(int resourceNumber);
	void UnAssignResource(int resourceNumber);
protected:
	void v_UpdateCellDisplay();
	int GetResourceNumber(int row, int col);
	void v_GetImageListBitmap(IMAGEINFO & r_imageInfo, CBitmap & r_bitmap);


// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CSourceGrid)
	//}}AFX_VIRTUAL

// Implementation
public:
	virtual ~CSourceGrid();

	void Initialize();

	// Generated message map functions
protected:
	//{{AFX_MSG(CSourceGrid)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()

	afx_msg BOOL OnMouseMove(short Button, short Shift, long x, long y);
	afx_msg BOOL OnOLEStartDrag(LPDISPATCH FAR* Data, long FAR* AllowedEffects);
	afx_msg BOOL OnOLECompleteDrag(long FAR* Effect);
	DECLARE_EVENTSINK_MAP()

	CellData m_currentCellData;
	BOOL m_dragging;
	BOOL m_busy;

	BOOL m_resourcesAssigned[RESOURCE_COUNT];
	CPictureHolder m_iconsAvailable[RESOURCE_COUNT];
	CPictureHolder m_iconsAssigned[RESOURCE_COUNT];
};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_SOURCEGRID_H__58A49E35_5888_4A98_B51E_BD8C96514D76__INCLUDED_)