//CxImage叠加字符

void CCxImageTestDlg::OnBnClickedButton1()

{

    CxImage imgJPG;   // 定义一个CxImage对象

    imgJPG.Load("1.jpg", CXIMAGE_FORMAT_JPG);   //先装载jpg文件

    // 判断加载的jpg文件是否存在。

    if (imgJPG.IsValid())

    {

        //得到文件对应的HBITMAP

        HBITMAP hbmp = imgJPG.MakeBitmap();

        HWND hwnd = GetSafeHwnd();

        HDC hdc = ::GetDC(hwnd);

        HDC hdcMem = ::CreateCompatibleDC(hdc);

        SelectObject(hdcMem, hbmp);

        RECT rc = {, , , };

        ::SetBkMode(hdcMem, TRANSPARENT);

        ::DrawText(hdcMem, "Hello World.", -, &rc,  DT_VCENTER);

        CxImage imgBmp;

        imgBmp.CreateFromHBITMAP(hbmp);

        imgBmp.Save("1jpg.jpg", CXIMAGE_FORMAT_JPG);

        ::ReleaseDC(hwnd, hdc);

        ::DeleteDC(hdcMem);

        ::DeleteDC(hdc);

    }

}

//左右合并两张图片，合并后的图片与原图等高;上下合并可类推。

//如果只是在图1上嵌入图2，处理后的图还是和图1的高宽一样。则只需要用MixFrom函数

void mergerImage(void)

{

    CxImage img1,img2,img3;

    int h1,w1,h2,w2,h3,w3,bpp;

    img1.Load("F:\\1.jpg");

    img2.Load("F:\\2.jpg");

    h1=img1.GetHeight();

    w1=img1.GetWidth();

    h2=img2.GetHeight();

    w2=img2.GetWidth();

    h3=h1;

    w3=w1+w2;

    bpp=img1.GetBpp();

    img3.Create(w3,h3,bpp);

    img3.MixFrom(img1,,);

    img3.MixFrom(img2,w1,);

    img3.Save("f:\\3.jpg",CXIMAGE_FORMAT_JPG);

}

     //图片裁剪

     CxImage image;

     bool bRet = image.Load("1.jpg");

     CxImage smallImg;

     bRet = image.Crop(,,,, &smallImg);

     uint8_t* buffer = ;

     int32_t size = ;

     smallImg.Encode(buffer, size, CXIMAGE_FORMAT_JPG);

     std::string sData = std::string((char*)buffer, size);

     smallImg.FreeMemory(buffer);

     bRet = smallImg.Save("2.jpg",CXIMAGE_SUPPORT_JPG);

图像旋转
image.Rotate(angle);
image.RotateLeft();
image.RotateRight();