MFC/QT 在控件上实时显示图像

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//----------MFC获取句柄显示-------------------

void ShowImage(IplImage* img, UINT ID) //在picture控件中显示图片的代码{  CDC* pDC=GetDlgItem(ID)->GetDC();  HDC hDC=pDC->GetSafeHdc();  CRect rect;  GetDlgItem(ID)->GetClientRect(&rect);  SetRect(rect,rect.left,rect.top,rect.right,rect.bottom);  CvvImage cimg;  cimg.CopyOf( img ); // 复制图片  cimg.DrawToHDC( hDC, &rect );  // 将图片绘制到显示控件的指定区域内  ReleaseDC( pDC );}

//---------QT获取句柄显示-------------------------

void resizeEvent(QResizeEvent * event){QFrame::resizeEvent(event);QSize size = m_imageLable->size();SetWindowExtents(m_halWnd,0,0,size.width(),size.height());}void initHalWnd(){QSize size = m_imageLable->size();HWND parent = (HWND)m_imageLable->winId();OpenWindow(0,0,size.width(),size.height(),(Hlong)parent,"","",&m_halWnd);}void onGrab(){QHCamera * cam = getCurCamera();if(cam){cam->grab(&m_image);DispObj(m_image,m_halWnd);}}

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