ON_COMMAND(ID_FILE_OPEN, &CWinApp::OnFileOpen)
void CWinApp::OnFileOpen() { ENSURE(m_pDocManager != NULL); m_pDocManager->OnFileOpen(); }
CDocManager* m_pDocManager;
void CDocManager::OnFileOpen() { // prompt the user (with all document templates) CString newName; if (!DoPromptFileName(newName, AFX_IDS_OPENFILE, OFN_HIDEREADONLY | OFN_FILEMUSTEXIST, TRUE, NULL)) return; // open cancelled AfxGetApp()->OpenDocumentFile(newName); // if returns NULL, the user has already been alerted }
BOOL CDocManager::DoPromptFileName(CString& fileName, UINT nIDSTitle, DWORD lFlags, BOOL bOpenFileDialog, CDocTemplate* pTemplate) { CFileDialog dlgFile(bOpenFileDialog, NULL, NULL, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, NULL, NULL, 0); CString title; VERIFY(title.LoadString(nIDSTitle)); dlgFile.m_ofn.Flags |= lFlags; CString strFilter; CString strDefault; if (pTemplate != NULL) { ASSERT_VALID(pTemplate); _AfxAppendFilterSuffix(strFilter, dlgFile.m_ofn, pTemplate, &strDefault); } else { // do for all doc template POSITION pos = m_templateList.GetHeadPosition(); BOOL bFirst = TRUE; while (pos != NULL) { pTemplate = (CDocTemplate*)m_templateList.GetNext(pos); _AfxAppendFilterSuffix(strFilter, dlgFile.m_ofn, pTemplate, bFirst ? &strDefault : NULL); bFirst = FALSE; } } // append the "*.*" all files filter CString allFilter; VERIFY(allFilter.LoadString(AFX_IDS_ALLFILTER)); strFilter += allFilter; strFilter += (TCHAR)'