CGColorSpaceRef colorSpace =
CGColorSpaceCreateDeviceRGB();
CGContextRef ctx =
CGBitmapContextCreate(pScreenBmpStore->pData_buff,imageWidth,imageHeight,
8 ,nBytes_per_Row , colorSpace,kCGImageAlphaPremultipliedLast );
CGImageRef imageRef =
CGBitmapContextCreateImage (ctx);
UIImage* image = [UIImage
imageWithCGImage:imageRef];