怎样得到文档类指针？

Question

SDI有一个对话框，对话框怎样才能得到文档类的指针？

Answer 1

CMainFrame* pFrame = (CMainFrame*)(AfxGetApp()->m_pMainWnd);
CMyDoc* pDoc = (CMyDoc*)(pFrame->GetActiveDocument());

Answer 2

在文档里写个
static CMyDoc* GetDocument()
{
return m_spThis;
}CMyDoc::CMyDoc()
{
m_spThis = this;
}

Answer 3

CMainFrame* pFrame = (CMainFrame*)(AfxGetApp()->m_pMainWnd);
CMyDoc* pDoc = (CMyDoc*)(pFrame->GetActiveDocument());

Answer 4

CMainFrame* pFrame = (CMainFrame*)(AfxGetApp()->m_pMainWnd);
CTest1Doc* pDoc = (CTest1Doc*)(pFrame->GetActiveDocument());