[MFC] MFC 클래스간 통신

MFC 클래스간 통신
SDI 형태
1. MainFrame 얻기
- CMainFrame *pFrame = (CmainFrame *) AfxGetMainWnd();
2. App 포인터 얻기
- CTestApp *pApp = (CtestApp *) AfxGetApp();
3. Document 포인터 얻기
- CMainFrame *pFrame = (CMainFrame *)AfxGetMainWnd();

CTestDoc *pDoc = (CTestDoc *)pFrame->GetActiveDocument();
- CTestDoc *pDoc = ((CMainFrame *)AfxGetMainWnd())->GetActiveDocument();

4. View 포인터 얻기
- CMainFrame *pFrame = (CMainFrame *)AfxGetMainWnd();

CTestView *pView = (CTestView *)pFrame->GetActiveView();
- CTestView *pView = ((CMainFrame *)AfxGetMainWnd())->GetActiveView();

MDI 형태 
1. ChildFrame 포인터 얻기
- CMainFrame *pFrame = (CMainFrame *)AfxGetMainWnd();
CChildFrame *pChild = (CChildFrame *)pFrame->GetActiveFrame();
- CChildFrame *pChild = ((CMainFrame *)AfxGetMainWnd())->GetActiveFrame();

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

3. View 포인터 얻기
- CCainFrame *pFrame = (CMainFrame)AfxGetMainWnd();
CChildFrame *pChild = (CChildFrame *)pFrame->GetActiveFrame();
CMdiTestView *pView = (CMdiTestDoc *)pChild->GetActiveView();
- CMdiTestView *pView = (((CMainFrame *)AfxGetMainWnd())->GetActiveFrame())->GetActiveView();

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