OnCmdMsg — CFrameWnd::OnCmdMsg and CView::OnCmdMsg

來源:互聯網
上載者:User

/////////////////////////////////////////////////////////////////////////////
// CFrameWnd command/message routing

BOOL CFrameWnd::OnCmdMsg(UINT nID, int nCode, void* pExtra,
 AFX_CMDHANDLERINFO* pHandlerInfo)
{
 CPushRoutingFrame push(this);

 // pump through current view FIRST
 CView* pView = GetActiveView();
 if (pView != NULL && pView->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
  return TRUE;

 // then pump through frame
 if (CWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
  return TRUE;

 // last but not least, pump through app
 CWinApp* pApp = AfxGetApp();
 if (pApp != NULL && pApp->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
  return TRUE;

 return FALSE;
}

 

// Command routing

BOOL CView::OnCmdMsg(UINT nID, int nCode, void* pExtra,
 AFX_CMDHANDLERINFO* pHandlerInfo)
{
 // first pump through pane
 if (CWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
  return TRUE;

 // then pump through document
 if (m_pDocument != NULL)
 {
  // special state for saving view before routing to document
  CPushRoutingView push(this);
  return m_pDocument->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo);
 }

 return FALSE;
}

 

 

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