GDI 总结一 CBitmap类

CBitmap类：

class CBitmap : public CGdiObject
{
	DECLARE_DYNAMIC(CBitmap)

public:
	static CBitmap* PASCAL FromHandle(HBITMAP hBitmap);

// Constructors
	CBitmap();

	BOOL LoadBitmap(LPCTSTR lpszResourceName);
	BOOL LoadBitmap(UINT nIDResource);
	BOOL LoadOEMBitmap(UINT nIDBitmap); // for OBM_/OCR_/OIC_
#ifndef _AFX_NO_AFXCMN_SUPPORT
	BOOL LoadMappedBitmap(UINT nIDBitmap, UINT nFlags = 0,
		LPCOLORMAP lpColorMap = NULL, int nMapSize = 0);
#endif
	BOOL CreateBitmap(int nWidth, int nHeight, UINT nPlanes, UINT nBitcount,
			const void* lpBits);
	BOOL CreateBitmapIndirect(LPBITMAP lpBitmap);
	BOOL CreateCompatibleBitmap(CDC* pDC, int nWidth, int nHeight);
	BOOL CreateDiscardableBitmap(CDC* pDC, int nWidth, int nHeight);

// Attributes
	operator HBITMAP() const;
	int GetBitmap(BITMAP* pBitMap);

// Operations
	DWORD SetBitmapBits(DWORD dwCount, const void* lpBits);
	DWOR