VC软件绘图技术

VC软件绘图技术： 

CBitmap* pBitmap = new CBitmap;
BITMAP BmpInfo;
CBitmap* pOldBitmap;
CDC* pDisplayMemDC=new CDC;
pDisplayMemDC->CreateCompatibleDC(pDC);

pBitmap->LoadBitmap(IDB_TITLE_LEFT);
pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
pBitmap->GetBitmap(&BmpInfo);

// x,y为绘图位置 ，必要时此语句要有For（..；..；..）控制
pDC->BitBlt(x,y, BmpInfo.bmWidth, BmpInfo.bmHeight, pDisplayMemDC, 0, 0, SRCCOPY); 

pDisplayMemDC->SelectObject(pOldBitmap);
pBitmap->DeleteObject();

ReleaseDC(pDisplayMemDC);//记得执行以下的语句
delete pDisplayMemDC;
delete pBitmap;

 

重载对话框的消息函数：

 void OnNcLButtonDown(UINT nHitTest, CPoint point);

//单击标题栏时是响应 void OnNcMouseMove(UINT nHitTest, CPoint point);

//Mous 在标题移动时响应 LRESULT DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam)