截图及保存显示相关.docxVIP

截图及保存显示相关voidCZoomPartView::OnDraw(CDC* pDC){CZoomPartDoc* pDoc = GetDocument();ASSERT_VALID(pDoc);// TODO: add draw code for native data here//声|¨′明??判D断?是o?否¤?load位?图a?的ì?静2态??标à¨o志?staticbool load;//按???原-来¤??大?¨?小?显?示o?位?图a?if (!load) {BITMAP bm;load = !load;m_pBitmap-LoadBitmap(IDB_BITMAP1);m_pdcMem-CreateCompatibleDC(pDC);m_pdcMem-SelectObject(m_pBitmap);m_pBitmap-GetObject(sizeof(bm),bm);m_sizeSource.cx = bm.bmWidth;m_sizeSource.cy = bm.bmHeight;m_sizeDest = m_sizeSource;pDC-StretchBlt(0,0,m_sizeSource.cx,m_sizeSource.cy,m_pdcMem,0,0,m_sizeSource.cx,m_sizeSource.cy,mana);}else {pDC-StretchBlt(0,0,m_sizeSource.cx,m_sizeSource.cy,m_pdcMem,0,0,m_sizeSource.cx,m_sizeSource.cy,mana);}}voidCZoomPartView::OnMouseMove(UINTnFlags, CPointpoint) {//计?算?要°a放¤?大?¨?的ì?局?部?矩?形?的ì?源??图a?像?位?置?和¨a目?标à¨o位?置?CString cord;int dd;CRect srect,drect,mrect;srect.left = point.x - s;srect.top = point.y - s;srect.right = point.x + s;srect.bottom = point.y + s;drect.left = point.x - d;drect.top = point.y - d;drect.right = point.x + d;drect.bottom = point.y + d;mrect.left = oldx - d;mrect.top = oldy - d;mrect.right = oldx + d;mrect.bottom = oldy + d;dd = 2*d;CDC * pDC = GetDC();OnPrepareDC(pDC);//放¤?大?¨?图a?像?if (recover){pDC-BitBlt(mrect.left,mrect.top,dd,dd,m_pdcMem,mrect.left,mrect.top,mana);}pDC-StretchBlt(drect.left,drect.top,drect.Width(),drect.Height(),m_pdcMem,srect.left,srect.top,srect.Width(),srect.Height(),SRCCOPY);oldx = point.x; oldy = point.y;ReleaseDC(pDC);recover = true;CView::OnMouseMove(nFlags, point);}voidCZoomPartView::OnLButtonDown(UINTnFlags, CPointpoint) {//如¨?果?鼠o¨?标à¨o位?置?不?在¨2位?图a?上|?，ê?则¨°还1原-位?图a?大?¨?小?显?示o?CRect rc(0,0,m_sizeSource.cx,m_sizeSource.cy);if(!rc.PtInRect(point)){Invalidate();}elseif (d 5)//如¨?果?放¤?大?¨?倍à?数oy大?¨?于?¨25，ê?就¨a继¨?续?减?小?放¤?大?¨?倍à?数oy，ê?然¨?后¨?进?行D放¤?大?¨?显?示o?{CDC * pDC = GetDC();pDC-StretchBlt(oldx - d,oldy - d,2*d,2*d,m_pdcMem,oldx - d,oldy - d,2*d,2*d,mana);d -= 10;ReleaseDC(pDC);CZoomPartView::OnMouseMove(nFlags, point);} CView::OnLB