MFC SDI Single Document multi-view implementation and free switching (2 ways to achieve the simple analysis)

Original Address http://blog.csdn.net/teleinfor/article/details/1858976

Class Cmultiviewapp:public CWINAPP

{

Public

cview* M_pfirstview;

cview* M_potherview;

int M_currentview;

cview* M_pview2;

cview* M_pview1;

Cmultiviewapp ();

Overrides

ClassWizard generated virtual function overrides

{{afx_virtual (Cmultiviewapp)

Public

Virtual BOOL InitInstance ();

}}afx_virtual

Implementation

{{afx_msg (Cmultiviewapp)

afx_msg void Onappabout ();

afx_msg void Onviewotherview ();

afx_msg void Onviewfirstview ();

}}afx_msg

afx_msg void Onviewchange (UINT ncmdid);

Declare_message_map ()

};

Second, the CPP file has the following message map:

/////////////////////////////////////////////////////////////////////////////

Cmultiviewapp

Begin_message_map (Cmultiviewapp, CWINAPP)

{{Afx_msg_map (Cmultiviewapp)

On_command (Id_app_about, Onappabout)

On_command (Id_view_otherview, Onviewotherview)

On_command (Id_view_firstview, Onviewfirstview)

}}afx_msg_map

Standard file based document commands

On_command (id_file_new, CWinApp::OnFileNew)

On_command (Id_file_open, Cwinapp::onfileopen)

Standard Print Setup command

On_command (Id_file_print_setup, Cwinapp::onfileprintsetup)

On_command_range (Id_view_view1, Id_view_view2, Onviewchange)

End_message_map ()

Description: The SDI program in Cmyapp::initinstance () has created an associated view/document instance through DocTemplate, which is cut and displayed. The implementation is as follows:

BOOL cmultiviewapp::initinstance ()

{

AfxEnableControlContainer ();

Standard initialization

If you is not using these features and wish to reduce the size

of your final executable, you should remove from the following

The specific initialization routines you does not need.

#ifdef _afxdll

Enable3dcontrols (); Call the When using the MFC in a shared DLL

#else

Enable3dcontrolsstatic (); Linking to MFC statically

#endif

The change of the registry key under which our settings is stored.

Todo:you should modify this string to be something appropriate

such as the name of your company or organization.

Setregistrykey (_t ("Local appwizard-generated Applications"));

LoadStdProfileSettings (); Load standard INI file options (including MRU)

Register the application ' s document templates. Document templates

Serve as the connection between documents, frame windows and views.

Csingledoctemplate* pdoctemplate;

Pdoctemplate = new CSingleDocTemplate (

Idr_mainframe,

Runtime_class (Cmultiviewdoc),

Runtime_class (CMainFrame),//main SDI frame window

Runtime_class (Cmultiviewview));

AddDocTemplate (pdoctemplate);

Parse command line to standard shell commands, DDE, File Open

CCommandLineInfo Cmdinfo;

ParseCommandLine (Cmdinfo);

Dispatch commands specified on the command line

if (! ProcessShellCommand (Cmdinfo))

return FALSE;

cview* Pactiveview = ((cframewnd*) m_pMainWnd)->getactiveview ();

M_pfirstview = Pactiveview;

M_potherview = (cview*) new Cotherview;

cdocument* PDoc = ((cframewnd*) m_pMainWnd)->getactivedocument ();

Implementing a second view and document association through CCreateContext

CCreateContext context;

Context.m_pcurrentdoc = PDoc;

UINT m_id = Afx_idw_pane_first + 1;

CRect rect;

To demonstrate that the first multi-view is the implementation method, the Vew instance creation is placed here

M_potherview->create (null, NULL, WS_CHILD, rect, m_pMainWnd, m_id, &context);

The one and only window have been initialized, so show and update it.

M_pmainwnd->showwindow (sw_showmaximized);

M_pmainwnd->updatewindow ();

M_currentview=1;