[C++]MFC, obtain the pointer of MainFrame, Doc, View classes

MFC, obtain the pointer of MainFrame, Doc, View classes 

// Notice: Before doing below, you have to include the header of the pointer to be obtained.

※ CMainFrame* pFrame = (CMainFrame*)AfxGetApp()->GetMainWnd();

1. MainFrame Pointer
CMainFrame *frame = (CMainFrame*)AfxGetMainWnd();

2. Doc class Pointer
CxxxDoc *pDoc = (CxxxDoc*)(frame->GetActivedocument());

3. View class Pointer
CxxxView* pView = (CxxxView*)((CMainFrame*)(AfxGetApp()->m_pMainWnd))->GetActiveView();

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[SDI Type]

1. MainFrame pointer
- CMainFrame *pFrame = (CmainFrame *) AfxGetMainWnd();

2. App class pointer
- CTestApp *pApp = (CtestApp *) AfxGetApp();

3. Document class pointer
- CMainFrame *pFrame = (CMainFrame *)AfxGetMainWnd();
  CTestDoc *pDoc = (CTestDoc *)pFrame->GetActiveDocument();
- CTestDoc *pDoc = ((CMainFrame *)AfxGetMainWnd())->GetActiveDocument();

4. View class pointer
- CMainFrame *pFrame = (CMainFrame *)AfxGetMainWnd();
  CTestView *pView = (CTestView *)pFrame->GetActiveView();
- CTestView *pView = ((CMainFrame *)AfxGetMainWnd())->GetActiveView();

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[MDI type]

1. ChildFrame pointer
- CMainFrame *pFrame = (CMainFrame *)AfxGetMainWnd();
  CChildFrame *pChild = (CChildFrame *)pFrame->GetActiveFrame();
- CChildFrame *pChild = ((CMainFrame *)AfxGetMainWnd())->GetActiveFrame();

2. Document pointer
- CMainFrame *pFrame = (CMainFrame)AfxGetMainWnd();
  CChildFrame *pChild = (CChildFrame *)pFrame->GetActiveFrame();
  CMdiTestDoc *pDoc = (CMdiTestDoc *)pChild->GetActiveDocument();
- CMdiTestDoc *pDoc = (((CMainFrame *)AfxGetMainWnd())->GetActiveFrame())->GetActiveDocument();

3. View pointer

- CCainFrame *pFrame = (CMainFrame)AfxGetMainWnd();
  CChildFrame *pChild = (CChildFrame *)pFrame->GetActiveFrame();
  CMdiTestView *pView = (CMdiTestDoc *)pChild->GetActiveView();
- CMdiTestView *pView = (((CMainFrame *)AfxGetMainWnd())->GetActiveFrame())->GetActiveView();

** This post is written by courtesy of http://egloos.zum.com/printf/v/1940633