mainfrm.cpp

vc开发300问源码

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

#include "stdafx.h"
#include "DynamicMenu.h"

#include "MainFrm.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(IDC_ADD, OnAdd)
	ON_COMMAND(IDC_DEL, OnDel)
	//}}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

//增加菜单项"Always on Top"
void CMainFrame::OnAdd() 
{
	//得到主菜单
	CMenu *pMainMenu = AfxGetMainWnd()->GetMenu();	
	//添加分隔符
	(pMainMenu->GetSubMenu (0))->AppendMenu (MF_SEPARATOR);
	//添加新的菜单项
	(pMainMenu->GetSubMenu (0))->AppendMenu(MF_STRING,
		ID_APP_ABOUT,_T("Always on &Top"));
	
	//重画菜单
	DrawMenuBar(); 
}

//删除菜单项"Always on Top"
void CMainFrame::OnDel() 
{
	//得到主菜单
	CMenu *pMainMenu = AfxGetMainWnd()->GetMenu();	
	CString str;

	//取得菜单的项数
	for(int i=(pMainMenu->GetSubMenu(0))->GetMenuItemCount()-1;i>=0;i--)
	{
		(pMainMenu->GetSubMenu(0))->GetMenuString(i,str,MF_BYPOSITION);

		//将指定菜单项的标签拷贝到指定的缓冲区
		//如果是刚才我们增加的菜单项，则删除
		if(str=="Always on &Top")
		{		
			(pMainMenu->GetSubMenu(0))->DeleteMenu(i,MF_BYPOSITION);
			break;
		}
	}
}