#pragma once

// CCHBufferDC
class AFX_EXT_CLASS CCHBufferDC : public CDC  
{

private:
	CCHBufferDC() { }
	CCHBufferDC(const CCHBufferDC &src) { }
	CCHBufferDC& operator=(const CCHBufferDC &src) { return *this; }

protected:
	BOOL Attach(HDC hDC);
	HDC Detach();

private:
	CWnd*			m_pParent;							//´ë»ó À©µµ¿ì¿¡ ´ëÇÑ Æ÷ÀÎÅÍ
	CDC*			m_pTarget;							//´ë»ó À©µµ¿ì DC¿¡ ´ëÇÑ Æ÷ÀÎÅÍ
	PAINTSTRUCT		m_PaintStruct;
	CRect			m_RcClient, m_RcWindow;				//´ë»ó À©µµ¿ìÀÇ Å©±â Á¤º¸

	CDC				m_MemoryDC;							//¹öÆÛ DC
	CBitmap			m_MemoryBmp, *m_pOldMemoryBmp;		//¹öÆÛ¸µÀ» À§ÇÑ ºñÆ®¸Ê

public:
	CCHBufferDC(CWnd *pParent);
	~CCHBufferDC();

public:
	inline CRect ClientRect() const { return m_RcClient; }
	inline CRect WindowRect() const { return m_RcWindow; }
	inline CRect UpdateRect() const { return m_PaintStruct.rcPaint; }

	operator HDC() const { return m_MemoryDC.m_hDC; }       //  DC handle for API functions
};