cximage mix 注意图像合成时内部坐标

本文主要是介绍cximage mix 注意图像合成时内部坐标，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

double h1,w1,h2,w2,h3,w3,h4,w4,bpp;
   //getheight(w4,h4);
   CString spath1 = _T("测试1");
   CString spath2 = _T("测试2");
   CString spath3 = _T("测试3");
   CStringArray arraystr;
   arraystr.Add(spath1);arraystr.Add(spath2);arraystr.Add(spath3);

   CxImage img1,img2,img3,img4;

   CxImage imgarray[3];

   img1.Load("D:\\z1.jpg");
   img2.Load("D:\\z2.jpg");
   img3.Load("D:\\z3.jpg");

h1=img1.GetHeight();
w1=img1.GetWidth();

h2=img2.GetHeight();
w2=img2.GetWidth();

h3=img3.GetHeight();
w3=img3.GetWidth();

   h4 = h1 + h2 + h3;
   w4 = max(w3,max(w1,w2));
   bpp=img1.GetBpp();
   img4.Create(w4,h4,bpp);
   /*img4.MixFrom(img1,0,h1+h2);
   img4.MixFrom(img2,0,h1);
   img4.MixFrom(img3,0,0);*/
   // Y轴上方为负数；
   img4.Mix(img1, CxImage::ImageOpType::OpScreen,0,-h3-h2);
   img4.Mix(img2,CxImage::ImageOpType::OpScreen,0,-h3);
   img4.Mix(img3,CxImage::ImageOpType::OpScreen,0,0);
   if (img4.IsValid())
   {
       for(int idx=0; idx <3; ++idx)
       {
           CString sFormat = arraystr[idx];
           CxImage::CXTEXTINFO textword;

img4.InitTextInfo( &textword );

           _stprintf( textword.lfont.lfFaceName, _T("Times New Roman"));
           textword.lfont.lfCharSet = GB2312_CHARSET ;
           textword.lfont.lfHeight =20;
           textword.lfont.lfWeight = 40 ;
           textword.lfont.lfItalic = 0 ;
           textword.lfont.lfUnderline = 0 ;
           textword.fcolor = RGB( 0,0,0 );
           textword.bcolor = RGB( 150, 205,205 );
           textword.opaque = 0; //背景
           textword.b_opacity = (float)(0)/(float)100.; //透明度
           textword.b_round = (BYTE) 1 ; //四舍五入为背景矩形半径
           //_stprintf( textword.text, _T("水印文字") );

           //sFormat.Format(_T("测试%d"),idx+1);
           memset(textword.text,0,sizeof(TCHAR)*255);
           for(int i=0; i < sFormat.GetLength(); ++i)
           {
               textword.text[i] = sFormat.GetAt(i);
           }
           if(idx==0)
           {
               img4.DrawStringEx(0,w1/2.0,h1,&textword);
           }
           if(idx==1)
           {
               img4.DrawStringEx(0,w1/2.0,h1+h2,&textword);
           }
           if(idx==2)
           {
               img4.DrawStringEx(0,w1/2.0,h1+h2+h3,&textword);
           }

       }

   }