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标题: 上位机MFC多文档程序打开时如何不创建子框架 [打印本页]

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作者: qq263946146    时间: 2019-7-24 12:30
标题: 上位机MFC多文档程序打开时如何不创建子框架
在我们使用多文档程序框架时，程序打开会默认打开一个子框架窗口。
我们也可通过代码取消这个默认动作。
即主框架不打开任何子框架窗口。
我们知道在app类的函数InitInstance()内有一段代码
        CCommandLineInfo cmdInfo;
        ParseCommandLine(cmdInfo);


下面还有一段解析指令的代码
        if (!ProcessShellCommand(cmdInfo))
        {
                return FALSE;
        }

我们只要在两段代码间修改下cmdInfo的成员变量就好
        cmdInfo.m_nShellCommand = CCommandLineInfo::FileNothing;
最终代码段为：

1. BOOL CDemoApp::InitInstance()
   
2. {
   
3.         AfxEnableControlContainer();
   
4. 
   
5.         // Standard initialization
   
6.         // If you are not using these features and wish to reduce the size
   
7.         //  of your final executable, you should remove from the following
   
8.         //  the specific initialization routines you do not need.
   
9. 
   
10. #ifdef _AFXDLL
    
11.         Enable3dControls();                        // Call this when using MFC in a shared DLL
    
12. #else
    
13.         Enable3dControlsStatic();        // Call this when linking to MFC statically
    
14. #endif
    
15. 
    
16.         // Change the registry key under which our settings are stored.
    
17.         // TODO: You should modify this string to be something appropriate
    
18.         // such as the name of your company or organization.
    
19.         SetRegistryKey(_T("Local AppWizard-Generated Applications"));
    
20. 
    
21.         LoadStdProfileSettings();  // Load standard INI file options (including MRU)
    
22. 
    
23.         // Register the application's document templates.  Document templates
    
24.         //  serve as the connection between documents, frame windows and views.
    
25. 
    
26.         CMultiDocTemplate* pDocTemplate;
    
27.         pDocTemplate = new CMultiDocTemplate(
    
28.                 IDR_DEMOTYPE,
    
29.                 RUNTIME_CLASS(CDemoDoc),
    
30.                 RUNTIME_CLASS(CChildFrame), // custom MDI child frame
    
31.                 RUNTIME_CLASS(CDemoView));
    
32.         AddDocTemplate(pDocTemplate);
    
33. 
    
34.         // create main MDI Frame window
    
35.         CMainFrame* pMainFrame = new CMainFrame;
    
36.         if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
    
37.                 return FALSE;
    
38.         m_pMainWnd = pMainFrame;
    
39. 
    
40.         // Parse command line for standard shell commands, DDE, file open
    
41.         CCommandLineInfo cmdInfo;
    
42.         ParseCommandLine(cmdInfo);
    
43. 
    
44.         cmdInfo.m_nShellCommand = CCommandLineInfo::FileNothing;
    
45. 
    
46.         // Dispatch commands specified on the command line
    
47.         if (!ProcessShellCommand(cmdInfo))
    
48.         {
    
49.                 return FALSE;
    
50.         }
    
51. 
    
52.         // The main window has been initialized, so show and update it.
    
53.         pMainFrame->ShowWindow(m_nCmdShow);
    
54.         pMainFrame->UpdateWindow();
    
55. 
    
56.         return TRUE;
    
57. }

复制代码

[MFC408]1[/MFC408]
[weixinlianxi]1[/weixinlianxi]

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