CGdiPlusBitmap.h

#ifndef __CGDIPLUSBITMAP_H__
#define __CGDIPLUSBITMAP_H__

#include <Gdiplus.h>

class CGdiPlusBitmap
{
public:
	Gdiplus::Bitmap* m_pBitmap;

public:
	CGdiPlusBitmap()							{ m_pBitmap = NULL; }
	CGdiPlusBitmap(LPCWSTR pFile)				{ m_pBitmap = NULL; Load(pFile); }
	virtual ~CGdiPlusBitmap()					{ Empty(); }

	void Empty()								{ delete m_pBitmap; m_pBitmap = NULL; }

	bool Load(LPCWSTR pFile)
	{
		Empty();
		m_pBitmap = Gdiplus::Bitmap::FromFile(pFile);
		return m_pBitmap->GetLastStatus() == Gdiplus::Ok;
	}

	operator Gdiplus::Bitmap*() const { return m_pBitmap; }
};


class CGdiPlusBitmapResource : public CGdiPlusBitmap
{
protected:
	HGLOBAL m_hBuffer;

public:
	CGdiPlusBitmapResource()					{ m_hBuffer = NULL; }
	CGdiPlusBitmapResource(LPCTSTR pName, LPCTSTR pType = RT_RCDATA, HMODULE hInst = NULL)
												{ m_hBuffer = NULL; Load(pName, pType, hInst); }
	CGdiPlusBitmapResource(UINT id, LPCTSTR pType = RT_RCDATA, HMODULE hInst = NULL)
												{ m_hBuffer = NULL; Load(id, pType, hInst); }
	CGdiPlusBitmapResource(UINT id, UINT type, HMODULE hInst = NULL)
												{ m_hBuffer = NULL; Load(id, type, hInst); }
	virtual ~CGdiPlusBitmapResource()			{ Empty(); }

	void Empty()								{ CGdiPlusBitmap::Empty(); ::GlobalUnlock(m_hBuffer); ::GlobalFree(m_hBuffer); m_hBuffer = NULL; }

	bool Load(LPCTSTR pName, LPCTSTR pType = RT_RCDATA, HMODULE hInst = NULL);
	bool Load(UINT id, LPCTSTR pType = RT_RCDATA, HMODULE hInst = NULL)
												{ return Load(MAKEINTRESOURCE(id), pType, hInst); }
	bool Load(UINT id, UINT type, HMODULE hInst = NULL)
												{ return Load(MAKEINTRESOURCE(id), MAKEINTRESOURCE(type), hInst); }
};

inline
bool CGdiPlusBitmapResource::Load(LPCTSTR pName, LPCTSTR pType, HMODULE hInst)
{
	Empty();

	HRSRC hResource = ::FindResource(hInst, pName, pType);
	if (!hResource)
		return false;
	
	DWORD imageSize = ::SizeofResource(hInst, hResource);
	if (!imageSize)
		return false;

	const void* pResourceData = ::LockResource(::LoadResource(hInst, hResource));
	if (!pResourceData)
		return false;

	m_hBuffer  = ::GlobalAlloc(GMEM_MOVEABLE, imageSize);
	if (!m_hBuffer)
		return false;

	void* pBuffer = ::GlobalLock(m_hBuffer);
	if (!pBuffer)
	{
		::GlobalFree(m_hBuffer);
		m_hBuffer = NULL;
		return false;
	}

	CopyMemory(pBuffer, pResourceData, imageSize);

	IStream* pStream = NULL;
	if (::CreateStreamOnHGlobal(m_hBuffer, TRUE, &pStream) == S_OK)
	{
		m_pBitmap = Gdiplus::Bitmap::FromStream(pStream);
		pStream->Release();
	}

	return m_pBitmap && m_pBitmap->GetLastStatus() == Gdiplus::Ok;
}

#endif // __CGDIPLUSBITMAP_H__