類CImage，標頭檔案atlimage.h

1.顯示背景透明的PNG圖片

CImage m_Image;

m_Image.Load(圖片路徑);//裝載圖片

for(int i = 0; i < m_Image.GetWidth(); i++)

{

    for(int j = 0; j < m_Image.GetHeight(); j++)

    {

        unsigned char* pucColor = reinterpret_cast<unsigned char *>(m_Image.GetPixelAddress(i , j));

        pucColor[0] = pucColor[0] * pucColor[3] / 255;

        pucColor[1] = pucColor[1] * pucColor[3] / 255;

        pucColor[2] = pucColor[2] * pucColor[3] / 255;

    }

}

m_Image.Draw(...)顯示圖片

BOOL CImage::Draw( HDC hDestDC, int xDest, int yDest, int nDestWidth,
 int nDestHeight, int xSrc, int ySrc, int nSrcWidth, int nSrcHeight )

2.顯示整體半透明PNG圖片

BOOL CImage::AlphaBlend( HDC hDestDC, int xDest, int yDest,
 int nDestWidth, int nDestHeight, int xSrc, int ySrc, int nSrcWidth,
 int nSrcHeight, BYTE bSrcAlpha, BYTE bBlendOp )

bSrcAlpha=255表示圖片整體不透明

bSrcAlpha=0表示整體透明