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上传时间: 2012-01-15
详细说明： void CExample10View::OnSave555BiBitfields() { // TODO: Add your command handler code here if(lpBmpDataBuf==NULL) { MessageBox("当前没有打开的位图"); return; } BYTE r,g,b; LPBYTE lpDest,lpSrc; int i,j; int nheapSize; CFileDialog filesavebox(FALSE,"bmp","BI_BITFIELDS.bmp",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"files(*.bmp)|*.bmp|",NULL); CFile file; CString strPathname; if(m_bmi.biBitCount!=24) { MessageBox("当前打开的位图不是24位位图"); return; } memcpy(&m_newbmf,&a mp;m_bmf,sizeof(BITMAPFILEHEADER)); memcpy(&m_newbmi,&m_bmi,sizeof(BITMAPINFOHEADER)); m_newbmi.biBitCount=16; m_newbmi.biCompression=BI_BITFIELDS;//即3 m_newbmi.biSizeImage=WIDTHBYTES(m_newbmi.biWidth,m_newbmi.biBitCount)*m_newbmi.biHeight; m_newbmf.bfSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+sizeof(DWORD)*3 +WIDTHBYTES(m_newbmi.biWidth,m_newbmi.biBitCount)*m_newbmi.biHeight; m_newbmf.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+sizeof(DWORD)*3; nheapSize=sizeof(BITMAPINFOHEADER)+sizeof(DWORD)*3 +WIDTHBYTES(m_newbmi.biWidth,m_newbmi.biBitCount)*m_newbmi.biHeight; if(lpnewBmpDataBuf!=NULL) { delete []lpnewBmpDataBuf; lpnewBmpDataBuf=NULL; } lpnewBmpDataBuf=new BYTE[nheapSize]; memcpy(lpnewBmpDataBuf,&m_newbmi,sizeof(BITMAPINFOHEADER)); DWORD* lp=(DWORD*)(lpnewBmpDataBuf+sizeof(BITMAPINFOHEADER)); *lp++=0x00007c00; *lp++=0x000003e0; *lp =0x0000001f; for(i=0;i>3); } } if(filesavebox.DoModal()!=IDOK) return; strPathname=filesavebox.GetPathName(); if(!file.Open(strPathname,CFile::modeCreate|CFile::modeWrite)) { MessageBox("Can not Create File!"); return; } file.Write(&m_bmf,sizeof(BITMAPFILEHEADER)); file.Write(lpnewBmpDataBuf,nheapSize); file.Close(); Invalidate(TRUE); } void CExample10View::OnSave565() { // TODO: Add your command handler code here if(lpBmpDataBuf==NULL) { MessageBox("当前没有打开的位图"); return; } BYTE r,g,b; LPBYTE lpDest,lpSrc; int i,j; int nheapSize; CFileDialog filesavebox(FALSE,"bmp","565.bmp",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"files(*.bmp)|*.bmp|",NULL); CFile file; CString strPathname; if(m_bmi.biBitCount!=24) { MessageBox("当前打开的位图不是24位位图"); return; } memcpy(&m_newbmf,&m_bmf,sizeof(BITMAPFILEHEADER)); memcpy(&m_newbmi,&m_bmi,sizeof(BITMAPINFOHEADER)); m_newbmi.biBitCount=16; m_newbmi.biCompression=BI_BITFIELDS;//即3 m_newbmi.biSizeImage=WIDTHBYTES(m_newbmi.biWidth,m_newbmi.biBitCount)*m_newbmi.biHeight; m_newbmf.bfSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+sizeof(DWORD)*3 +WIDTHBYTES(m_newbmi.biWidth,m_newbmi.biBitCount)*m_newbmi.biHeight; m_newbmf.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+sizeof(DWORD)*3; nheapSize=sizeof(BITMAPINFOHEADER)+sizeof(DWORD)*3 +WIDTHBYTES(m_newbmi.biWidth,m_newbmi.biBitCount)*m_newbmi.biHeight; if(lpnewBmpDataBuf!=NULL) { delete []lpnewBmpDataBuf; lpnewBmpDataBuf=NULL; } lpnewBmpDataBuf=new BYTE[nheapSize]; memcpy(lpnewBmpDataBuf,&m_newbmi,sizeof(BITMAPINFOHEADER)); DWORD* lp=(DWORD*)(lpnewBmpDataBuf+sizeof(BITMAPINFOHEADER)); *lp++=0x0000f800; *lp++=0x000007e0; *lp =0x0000001f; for(i=0;i>3); } } if(filesavebox.DoModal()!=IDOK) return; strPathname=filesavebox.GetPathName(); if(!file.Open(strPathname,CFile::modeCreate|CFile::modeWrite)) { MessageBox("Can not Create File!"); return; } file.Write(&m_bmf,sizeof(BITMAPFILEHEADER)); file.Write(lpnewBmpDataBuf,nheapSize); file.Close(); Invalidate(TRUE); } ...展开收缩
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