一个效果非常好的24,16bit真彩位图转化成256彩色或黑白位图的演示程序

// truecolorto8bitView.cpp : implementation of the CTruecolorto8bitView class // #include "stdafx.h" #include "truecolorto8bit.h" #include "truecolorto8bitDoc.h" #include "truecolorto8bitView.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CTruecolorto8bitView IMPLEMENT_DYNCREATE(CTruecolorto8bitView, CView) BEGIN_MESSAGE_MAP(CTruecolorto8bitView, CView) //{{AFX_MSG_MAP(CTruecolorto8bitView) ON_COMMAND(ID_FILE_OPEN, OnFileOpen) ON_COMMAND(ID_M8BITCOLOR, OnM8bitcolor) ON_COMMAND(ID_M2COLOR, OnM2color) ON_COMMAND(ID_FILE_SAVE, OnFileSave) //}}AFX_MSG_MAP // Standard printing commands ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CTruecolorto8bitView construction/destruction CTruecolorto8bitView::CTruecolorto8bitView() { // TODO: add construction code here bShow=false; } CTruecolorto8bitView::~CTruecolorto8bitView() { } BOOL CTruecolorto8bitView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: Modify the Window class or styles here by modifying // the CREATESTRUCT cs return CView::PreCreateWindow(cs); } ///////////////////////////////////////////////////////////////////////////// // CTruecolorto8bitView drawing //老胡作品 //akiy@eyou.com void CTruecolorto8bitView::OnDraw(CDC* pDC) { CTruecolorto8bitDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // if(bShow!=false) // { if(bitmap.m_hObject==NULL) return; CBitmap *pOldBitmap; CDC tempDC; tempDC.CreateCompatibleDC(NULL); pOldBitmap = tempDC.SelectObject(&bitmap); pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&tempDC,0,0,SRCCOPY); tempDC.SelectObject(pOldBitmap); tempDC.DeleteDC(); // } // TODO: add draw code for native data here } ///////////////////////////////////////////////////////////////////////////// // CTruecolorto8bitView printing BOOL CTruecolorto8bitView::OnPreparePrinting(CPrintInfo* pInfo) { // default preparation return DoPreparePrinting(pInfo); } void CTruecolorto8bitView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add extra initialization before printing } void CTruecolorto8bitView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add cleanup after printing } ///////////////////////////////////////////////////////////////////////////// // CTruecolorto8bitView diagnostics #ifdef _DEBUG void CTruecolorto8bitView::AssertValid() const { CView::AssertValid(); } void CTruecolorto8bitView::Dump(CDumpContext& dc) const { CView::Dump(dc); } CTruecolorto8bitDoc* CTruecolorto8bitView::GetDocument() // non-debug version is inline { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CTruecolorto8bitDoc))); return (CTruecolorto8bitDoc*)m_pDocument; } #endif //_DEBUG ///////////////////////////////////////////////////////////////////////////// // CTruecolorto8bitView message handlers void CTruecolorto8bitView::OnFileOpen() { // TODO: Add your command handler code here CFileDialog dlg(TRUE,NULL,NULL,NULL); if(dlg.DoModal()!=IDOK) return; str.Empty(); str=dlg.GetPathName(); HBITMAP hBitmap=(HBITMAP)LoadImage(NULL,str, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION); // CDC tempDC; if(hBitmap==NULL) return; bitmap.DeleteObject(); bitmap.Attach(hBitmap); bitmap.GetObject(sizeof(BITMAP),&bm); bShow=true; Invalidate(); } typedef BOOL (*MYPROC)(BITMAPINFO* pBMISrc,LPBYTE pBitsSrc,BITMAPINFO* pBMIDest,LPBYTE pBitsDest); //老胡作品 //akiy@eyou.com void CTruecolorto8bitView::OnM8bitcolor() { // TODO: Add your command handler code here //加载位图文件 BITMAPFILEHEADER bf; BITMAPINFO *binfoin,*binfoout; //创建两个信息头 CFile file; if(!file.Open(str,CFile::modeRead,NULL)) return; binfoin=(BITMAPINFO *)malloc(sizeof(BITMAPINFOHEADER)+256*sizeof(RGBQUAD)+10); binfoout=(BITMAPINFO *)malloc(sizeof(BITMAPINFOHEADER)+256*sizeof(RGBQUAD)+10); file.Read(&bf,sizeof(BITMAPFILEHEADER)); file.Read(binfoin,sizeof(BITMAPINFOHEADER)); int nline=((binfoin->bmiHeader.biWidth* binfoin->bmiHeader.biBitCount+31)/8) /4*4; int nsize=nline*(binfoin->bmiHeader.biHeight); int nline8=((binfoin->bmiHeader.biWidth* 8+31)/8) /4*4; int nsize8=nline8*(binfoin->bmiHeader.biHeight); unsigned char *pdata,*pdata8; //为源数据开辟缓冲区 pdata=(unsigned char *)malloc(nsize+nline+10);//注意这里必须申请一块大一点的空间,不然会益处 //为目标数据开辟缓冲区 pdata8=(unsigned char *)malloc(nsize8+10); file.Read(pdata,nsize); file.Close(); //调用dll库中的函数 HINSTANCE hinstLib; MYPROC ProcAdd; hinstLib = LoadLibrary("demcolordll"); if (hinstLib != NULL) { ProcAdd = (MYPROC) GetProcAddress(hinstLib, "RGB2256HiQuality"); if(ProcAdd !=NULL) { ProcAdd(binfoin,pdata,binfoout,pdata8); FreeLibrary(hinstLib); //将得到的数据写进文件中 if(file.Open("temp.bmp",CFile::modeCreate|CFile::modeWrite,NULL)) { bf.bfOffBits=bf.bfOffBits+1024; bf.bfSize=bf.bfOffBits+nsize8; file.Write(&bf,sizeof(BITMAPFILEHEADER)); file.Write(binfoout,sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256); file.Write(pdata8,nsize8); file.Close(); } } } free(binfoin); free(binfoout); free(pdata); free(pdata8); HBITMAP hBitmap=(HBITMAP)LoadImage(NULL,"temp.bmp", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION); // CDC tempDC; if(hBitmap==NULL) return; bitmap.DeleteObject(); bitmap.Attach(hBitmap); bitmap.GetObject(sizeof(BITMAP),&bm); bShow=true; Invalidate(); } //老胡作品 //akiy@eyou.com void CTruecolorto8bitView::OnM2color() { //加载位图文件 BITMAPFILEHEADER bf; BITMAPINFO *binfoin,*binfoout; //创建两个信息头 CFile file; if(!file.Open(str,CFile::modeRead,NULL)) return; binfoin=(BITMAPINFO *)malloc(sizeof(BITMAPINFOHEADER)+256*sizeof(RGBQUAD)+10); binfoout=(BITMAPINFO *)malloc(sizeof(BITMAPINFOHEADER)+2*sizeof(RGBQUAD)+10); file.Read(&bf,sizeof(BITMAPFILEHEADER)); file.Read(binfoin,sizeof(BITMAPINFOHEADER)); int nline=((binfoin->bmiHeader.biWidth* binfoin->bmiHeader.biBitCount+31)/8) /4*4; int nsize=nline*(binfoin->bmiHeader.biHeight); int nline1=((binfoin->bmiHeader.biWidth+31)/8) /4*4; int nsize1=nline1*(binfoin->bmiHeader.biHeight); unsigned char *pdata,*pdata1; //为源数据开辟缓冲区 pdata=(unsigned char *)malloc(nsize+nline+10);//注意这里必须申请一块大一点的空间,不然会益处 //为目标数据开辟缓冲区 pdata1=(unsigned char *)malloc(nsize1+10); file.Read(pdata,nsize); file.Close(); //调用dll库中的函数 HINSTANCE hinstLib; MYPROC ProcAdd; hinstLib = LoadLibrary("demcolordll"); if (hinstLib != NULL) { ProcAdd = (MYPROC) GetProcAddress(hinstLib, "RGB21HiQuality"); if(ProcAdd !=NULL) { ProcAdd(binfoin,pdata,binfoout,pdata1); FreeLibrary(hinstLib); //将得到的数据写进文件中 if(file.Open("temp.bmp",CFile::modeCreate|CFile::modeWrite,NULL)) { bf.bfOffBits=bf.bfOffBits+sizeof(RGBQUAD)*2; bf.bfSize=bf.bfOffBits+nsize1; file.Write(&bf,sizeof(BITMAPFILEHEADER)); file.Write(binfoout,sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*2); file.Write(pdata1,nsize1); file.Close(); } } } free(binfoin); free(binfoout); free(pdata); free(pdata1); HBITMAP hBitmap=(HBITMAP)LoadImage(NULL,"temp.bmp", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION); // CDC tempDC; if(hBitmap==NULL) return; bitmap.DeleteObject(); bitmap.Attach(hBitmap); bitmap.GetObject(sizeof(BITMAP),&bm); bShow=true; Invalidate(); } //老胡作品 //akiy@eyou.com void CTruecolorto8bitView::OnF