VC6.0图像处理4--镜像

阳光穿透心脏的1/2处 2022-06-18 01:39 152阅读 0赞

源码下载：[http://download.csdn.net/detail/renshengrumenglibing/3875522][http_download.csdn.net_detail_renshengrumenglibing_3875522]

//本节是关于镜像处理的函数，大家重点关注如何申请存储空间，并返回一个指向该空间的指针，以及如何利用指针实现数据的操作

void CBMPViewerDoc::OnMenuitem32786() //垂直镜像  
\{  
// TODO: Add your command handler code here  
int linewidth;  
linewidth=(pbi->bmiHeader.biWidth\*pbi->bmiHeader.biBitCount+31)/32\*4;

>  //申请空间，并返回其指针赋给lpbit

HLOCAL  hbit;  
   hbit = LocalAlloc(LHND, linewidth);  
            unsigned char \*lpbit;  
   lpbit = (unsigned char\*)LocalLock(hbit);

unsigned char \*lpScr;  
unsigned char \* lpDest;  
// TODO: Add your command handler code here  
for(int i = 0 ; i< bi.biHeight/2 ; i++)\{  
  
  
lpScr = (unsigned char\*)lpBuf + linewidth\*i;  
lpDest = (unsigned char\*)lpBuf+linewidth\*(bi.biHeight- 1 - i);

//常用的函数memcpy，将制定大下的数据从地址2复制个地址1

> memcpy(lpbit, lpDest, linewidth);

memcpy(lpDest, lpScr,linewidth);  
memcpy(lpScr, lpbit,linewidth);

\}  
  
//Invalidata(TRUE);  
UpdateAllViews(NULL,0,NULL);  
\}

void CBMPViewerDoc::OnMenuitem32787() //水平镜像  
\{  
// TODO: Add your command handler code here  
// TODO: Add your command handler code here  
int linewidth;  
linewidth=(pbi->bmiHeader.biWidth\*pbi->bmiHeader.biBitCount+31)/32\*4;  
unsigned char \* lpDest;  
    unsigned char temp;  
  
// TODO: Add your command handler code here  
for(int i = 0 ; i< bi.biHeight ; i++)\{  
for(int j = 0 ; j< bi.biWidth/2 ; j++)\{  
unsigned char \*lpScr;  
lpScr = (unsigned char \*)lpBuf+linewidth\*(bi.biHeight - i -1) + j;  
       lpDest = (unsigned char \*)lpBuf+linewidth\*(bi.biHeight - i) - j;  
temp = \*lpScr;  
\*lpScr = \*lpDest;  
\*lpDest = temp;  
  
\}  
  
\}  
  
  
  
UpdateAllViews(NULL,0,NULL);  
  
\}

//未完待续

[http_download.csdn.net_detail_renshengrumenglibing_3875522]: http://download.csdn.net/detail/renshengrumenglibing/3875522