// IDC_VW_FRAME控件Picture Control主要作用是控制Vedio Window的显示位置void CPlayWndDlg::MoveVideoWindow(void) { IVideoWindow* pVideoWinow = NULL; if(m_pGraph) { m_pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVideoWinow); CRect rc; GetDlgItem(IDC_VW_FRAME)->GetWindowRect(rc); ScreenToClient(rc); pVideoWinow->SetWindowPosition(rc.left, rc.top, rc.Width(), rc.Height()); pVideoWinow->Release(); pVideoWinow = NULL; } }
void CPlayWndDlg::CleanUp(void) { long levCode; IVideoWindow *pVidWin = NULL;
if(!m_pGraph) return;
m_pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVidWin); m_pEvent->WaitForCompletion(INFINITE, &levCode);
pVidWin->put_Visible(OAFALSE); pVidWin->Release(); m_pMediaSeeking->Release(); m_pMediaControl->Release(); m_pEvent->Release(); m_pGraph->Release(); m_pMediaSeeking = NULL; m_pMediaControl = NULL; m_pEvent = NULL; m_pGraph = NULL;
UpdateData(FALSE); CClientDC dc(GetDlgItem(IDC_VW_FRAME)); dc.SetBkColor(RGB(0,0,0));
CRect rc;
GetDlgItem(IDC_VW_FRAME)->GetClientRect(rc); ClientToScreen(rc); dc.FillRect(rc, CBrush::FromHandle((HBRUSH)GetStockObject(BLACK_BRUSH))); Invalidate(); }
BOOL CPlayWndDlg::Stop(void) { IVideoWindow *pVidWin = NULL; HRESULT hr;
if(m_pMediaControl) { LONGLONG pos = 0; hr = m_pMediaControl->Stop(); hr = m_pMediaSeeking->SetPositions(&pos, AM_SEEKING_AbsolutePositioning ,&pos, AM_SEEKING_NoPositioning);
m_pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVidWin); pVidWin->put_Visible(OAFALSE);
m_isPlaying = FALSE; GetDlgItem(IDC_PLAY_BUTTON)->EnableWindow(TRUE); GetDlgItem(IDC_PAUSE_BUTTON)->EnableWindow(FALSE); pVidWin->Release(); long levCode; m_pEvent->WaitForCompletion(INFINITE, &levCode); m_pMediaControl->Release();
return TRUE; } return FALSE; }
BOOL CPlayWndDlg::Play(void) { // 运行
IVideoWindow *pVidWin = NULL;
if(m_pGraph) { m_pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVidWin); pVidWin->put_Visible(OATRUE); m_pGraph->QueryInterface(IID_IMediaControl, (void **)&m_pMediaControl); m_pMediaControl->Run(); m_isPlaying = TRUE; GetDlgItem(IDC_PLAY_BUTTON)->EnableWindow(FALSE); GetDlgItem(IDC_PAUSE_BUTTON)->EnableWindow(TRUE);
return TRUE; } return FALSE; } |