bool Jitter(long radius=2)

bool CxImage::Jitter(long radius)
{
    // 检查图像是否合法，这应当是这个函数的第一行
    if (!pDib) return false;
    
    // 局部变量
    long nx,ny;
    
    // 临时图像，用于存储算法的部分结果
    CxImage tmp(*this,pSelection!=0,true,true);
    
    // 限制函数仅仅作用在选区（通过Selection...()函数定义）的最小区域
    // 这将加快整个循环的速度，提高算法效率
    long xmin,xmax,ymin,ymax;
    if (pSelection){
        xmin = info.rSelectionBox.left; xmax = info.rSelectionBox.right;
        ymin = info.rSelectionBox.bottom; ymax = info.rSelectionBox.top;
    } else {
        xmin = ymin = 0;
        xmax = head.biWidth; ymax=head.biHeight;
    }
    
    // 主循环 : 垂直方向扫描图像
    for(long y=ymin; y <ymax; y++){
    
        // 监视循环的进度
        info.nProgress = (long)(100*y/head.biHeight);
    
        // 检查应用程序是否已经退出
        if (info.nEscape) break;
    
        // 主循环 : 水平方向扫描图像
        for(long x=xmin; x<xmax; x++){
    
        // 如果选区功能启用了，则仅仅处理选区内部的像素
#if CXIMAGE_SUPPORT_SELECTION
            if (SelectionIsInside(x,y))
#endif //CXIMAGE_SUPPORT_SELECTION
            {
                // 主算法
                nx=x+(long)((rand()/(float)RAND_MAX - 0.5)*(radius*2));
                ny=y+(long)((rand()/(float)RAND_MAX - 0.5)*(radius*2));
                if (!IsInside(nx,ny)) {
                    nx=x;
                    ny=y;
                }

// 保存结果到临时图像中.
                // 如果可以，24位图像请使用PixelColor，
                // 而8，4和1位图像请使用PixelIndex，这样可以加快速度。
                if (head.biClrUsed==0){
                    tmp.SetPixelColor(x,y,GetPixelColor(nx,ny));
                } else {
                    tmp.SetPixelIndex(x,y,GetPixelIndex(nx,ny));
                }

// 如果启用了透明度功能，则处理透明图层中的像素
#if CXIMAGE_SUPPORT_ALPHA
                tmp.AlphaSet(x,y,AlphaGet(nx,ny));
#endif //CXIMAGE_SUPPORT_ALPHA

}
        }
    }

// 保存结果并退出
    Transfer(tmp);
    return true;
}

CxImage  image;
// bmp -> jpg
image.Load("image.bmp", CXIMAGE_FORMAT_BMP);
if (image.IsValid()){
    if(!image.IsGrayScale()) image.IncreaseBpp(24);
    image.SetJpegQuality(80);
    image.Save("image.jpg",CXIMAGE_FORMAT_JPG);
}
// png -> tif
image.Load("image.png", CXIMAGE_FORMAT_PNG);
if (image.IsValid()){
    image.Save("image.tif",CXIMAGE_FORMAT_TIF);
}

//Load the resource IDR_PNG1 from the PNG resource type
CxImage* newImage = new CxImage();
newImage->LoadResource(FindResource(NULL,MAKEINTRESOURCE(IDR_PNG1),
                       "PNG"),CXIMAGE_FORMAT_PNG);
或者
//Load the resource IDR_JPG1 from DLL
CxImage* newImage = new CxImage();
HINSTANCE hdll=LoadLibrary("imagelib.dll");
if (hdll){
    HRSRC hres=FindResource(hdll,MAKEINTRESOURCE(IDR_JPG1),"JPG");
    newImage->LoadResource(hres,CXIMAGE_FORMAT_JPG,hdll);
    FreeLibrary(hdll);
}
或者
//Load a bitmap resource;
HBITMAP bitmap = ::LoadBitmap(AfxGetInstanceHandle(),
                           MAKEINTRESOURCE(IDB_BITMAP1)));
CxImage *newImage = new CxImage();
newImage->CreateFromHBITMAP(bitmap);