mainfrm.cpp

一个视图分割的程序,偶学了好久了

// MainFrm.cpp : implementation of the CMainFrame class
//

#include "stdafx.h"
#include "SwitchForm.h"

#include "MainFrm.h"

#include "SwitchFormDoc.h"
#include "SwitchFormView.h"
#include "NextFormView.h"
#include "FORMVIEW.h"


#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMainFrame

IMPLEMENT_DYNCREATE(CMainFrame, CFrameWnd)

BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
	//{{AFX_MSG_MAP(CMainFrame)
	ON_WM_CREATE()
	ON_COMMAND(ID_FIRSTFORM, OnFirstform)
	ON_COMMAND(ID_SECONDFORM, OnSecondform)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

static UINT indicators[] =
{
	ID_SEPARATOR,           // status line indicator
	ID_INDICATOR_CAPS,
	ID_INDICATOR_NUM,
	ID_INDICATOR_SCRL,
};

/////////////////////////////////////////////////////////////////////////////
// CMainFrame construction/destruction

CMainFrame::CMainFrame()
{
	// TODO: add member initialization code here
	
}

CMainFrame::~CMainFrame()
{
}

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP
		| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
		!m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
	{
		TRACE0("Failed to create toolbar\n");
		return -1;      // fail to create
	}

	if (!m_wndStatusBar.Create(this) ||
		!m_wndStatusBar.SetIndicators(indicators,
		  sizeof(indicators)/sizeof(UINT)))
	{
		TRACE0("Failed to create status bar\n");
		return -1;      // fail to create
	}

	// TODO: Delete these three lines if you don't want the toolbar to
	//  be dockable
	m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
	EnableDocking(CBRS_ALIGN_ANY);
	DockControlBar(&m_wndToolBar);

	return 0;
}

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
	if( !CFrameWnd::PreCreateWindow(cs) )
		return FALSE;
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CMainFrame diagnostics

#ifdef _DEBUG
void CMainFrame::AssertValid() const
{
	CFrameWnd::AssertValid();
}

void CMainFrame::Dump(CDumpContext& dc) const
{
	CFrameWnd::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers


void CMainFrame::SwitchToForm(int nForm)
{
	 //获取原来的活动窗体的视图句柄

     CView* pOldActiveView = GetActiveView();

   //获取由"nForm"标识的窗体所对应的视图句柄

    CView* pNewActiveView = (CView*) GetDlgItem(nForm);

   //若视图句柄为空，则创建一新的。

    if (pNewActiveView == NULL)
	{
         if (nForm == IDD_SWITCHFORM_FORM)
             pNewActiveView = (CView*)new CSwitchFormView;
         if (nForm == IDD_NEXTFORM)
             pNewActiveView = (CView*)new CNextFormView;

                CCreateContext context;
                context.m_pCurrentDoc = pOldActiveView->GetDocument();
                pNewActiveView->Create(NULL,NULL,0L,CFrameWnd::rectDefault,this,nForm,&context);

                pNewActiveView->OnInitialUpdate();
	} 

          //选择pNewActiveView为活动窗体 

        SetActiveView(pNewActiveView);

       //显示活动窗体，隐藏非活动窗体
       pNewActiveView->ShowWindow(SW_SHOW);
       pOldActiveView->ShowWindow(SW_HIDE);
      int ID;

      if(pOldActiveView->GetRuntimeClass() == RUNTIME_CLASS(CSwitchFormView))
      ID=IDD_SWITCHFORM_FORM;

      if(pOldActiveView->GetRuntimeClass() == RUNTIME_CLASS(CNextFormView))
      ID=IDD_NEXTFORM;

      //设置窗体的ID号

      pOldActiveView->SetDlgCtrlID(ID);
      pNewActiveView->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
      RecalcLayout();
}




void CMainFrame::OnFirstform() 
{
	// TODO: Add your command handler code here
	//通过IsKindOf函数确定当前活动窗口是否是第一个窗口，如是，则无须切换，
 //否则将通过SwitchToForm函数将当前活动窗口切换到"IDD_SWITCHFORM_FORM"
//标识的第二个窗体。
if (GetActiveView()->IsKindOf(RUNTIME_CLASS(CSwitchFormView)))
return;
SwitchToForm(IDD_SWITCHFORM_FORM);

	
}

void CMainFrame::OnSecondform() 
{
	// TODO: Add your command handler code here
	if (GetActiveView()->IsKindOf(RUNTIME_CLASS(CNextFormView)))
   return;
   SwitchToForm(IDD_NEXTFORM);

    

	
}

void CMainFrame::OnUpdateFirstform(CCmdUI *pCmdUI)
{
//通过IsKindOf函数判断当前活动窗口是否是第一个窗体，如是则将其选中。
pCmdUI->SetCheck(GetActiveView()->IsKindOf(RUNTIME_CLASS(CSwitchFormView)));


}

void CMainFrame::OnUpdateSecondform(CCmdUI *pCmdUI)
{
	pCmdUI->SetCheck(GetActiveView()->IsKindOf(RUNTIME_CLASS(CNextFormView))); 

}



BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext) 
{
	// TODO: Add your specialized code here and/or call the base class
	CRect rc;
	GetClientRect(rc);
	m_wndSplitter.CreateStatic(this,1,2);
	m_wndSplitter.CreateView(0,0,RUNTIME_CLASS(CNextFormView),CSize(rc.Width()*2/3,rc.Height()),NULL);
	m_wndSplitter.CreateView(0,1,RUNTIME_CLASS(CFORMVIEW),CSize(rc.Width()/3,rc.Height()),NULL);
	return TRUE;
	
	return CFrameWnd::OnCreateClient(lpcs, pContext);
}