testdlg.cpp

《Visual C++编程技巧典型案例解析：基础与应用篇（下）（含1CD-ROM）——编程技巧典型案例集锦系列》源码

// TestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Test.h"
#include "TestDlg.h"
#include "mainfrm.h"
#include <afxpriv.h>              // For WM_KICKIDLE
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CTestDlg dialog


CTestDlg::CTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTestDlg::IDD, pParent)
{
		m_bFlag = TRUE;
	//{{AFX_DATA_INIT(CTestDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}


void CTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTestDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CTestDlg, CDialog)
	//{{AFX_MSG_MAP(CTestDlg)
	ON_COMMAND(ID_TEST_11, OnTest11)
	ON_UPDATE_COMMAND_UI(ID_TEST_11, OnUpdateTest11)
	ON_COMMAND(ID_TEST_2, OnTest2)
	ON_UPDATE_COMMAND_UI(ID_TEST_2, OnUpdateTest2)
	ON_WM_MENUSELECT()
	ON_MESSAGE(WM_KICKIDLE, OnKickIdle)
	ON_BN_CLICKED(IDC_BUTTON_TEST, OnButtonTest)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestDlg message handlers
BOOL CTestDlg::OnInitDialog() 
{

	CDialog::OnInitDialog();
	
	if(!m_wndToolBar.CreateEx(this,TBSTYLE_FLAT,WS_CHILD|WS_VISIBLE|CBRS_TOP| CBRS_GRIPPER ,CRect(4,4,0,0))||!m_wndToolBar.LoadToolBar(IDR_DIALOGTOOLBAR) )
	{
		MessageBox("工具栏创建失败","提示",MB_ICONWARNING|MB_OK);
		return FALSE;
	}
	//显示工具栏
	m_wndToolBar.ShowWindow(SW_SHOW);
	RepositionBars(AFX_IDW_CONTROLBAR_FIRST,AFX_IDW_CONTROLBAR_LAST, 0);
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

//创建非模态对话框
BOOL CTestDlg::Create()
{
	return CDialog::Create(CTestDlg::IDD,NULL);
}

BOOL CTestDlg::PreTranslateMessage(MSG* pMsg) 
{
	//更新工具栏
	if(m_wndToolBar.IsWindowVisible())
		m_wndToolBar.OnUpdateCmdUI((CFrameWnd *)this, TRUE);

	//获取应用程序的加速键句柄
	HACCEL hAccel = ((CMainFrame*)AfxGetApp()->m_pMainWnd)->m_hAccelTable;

	//处理加速键，返回值为0表示不是加速键信息
	if(! ::TranslateAccelerator(m_hWnd,hAccel,pMsg))
		return CDialog::PreTranslateMessage(pMsg);
	else
		return TRUE;	
}

//响应消息WM_KICKIDLE，用于更新工具栏(仅仅用于模态对话框)
LRESULT CTestDlg::OnKickIdle(WPARAM wParam, LPARAM lParam)
{
//下面两行代码和函数PreTranslateMessage(MSG* pMsg)中两行代码作用相同
//要测试这两行代码作用，先屏蔽函数PreTranslateMessage(MSG* pMsg)中两行代码
//再启用下面两行代码
//  if(m_wndToolBar.IsWindowVisible())
//		m_wndToolBar.OnUpdateCmdUI((CFrameWnd *)this, TRUE);
	return 0;
}


//更新菜单
void CTestDlg::OnMenuSelect(UINT nItemID, UINT nFlags, HMENU hSysMenu) 
{
	CCmdUI cmdUI;
	UINT   nCount ,i;
	CMenu * pMainMenu = NULL,*pSubMenu=NULL;

	if(hSysMenu==NULL||!(nFlags&MF_POPUP))//菜单句柄为空或点击的不是下拉菜单项
		return ;
	pMainMenu =CMenu::FromHandle(hSysMenu);//根据菜单句柄获取菜单指针
	pSubMenu = pMainMenu-> GetSubMenu(nItemID);//获取子菜单指针

    if(IsMenu(pSubMenu->GetSafeHmenu()))
    {
        cmdUI.m_nIndexMax = pSubMenu->GetMenuItemCount();//获取子菜单项的个数

		//循环依次更新子菜单项
        for (i = 0; i < cmdUI.m_nIndexMax;++i)
        {	
            cmdUI.m_nIndex = i;
            cmdUI.m_nID = pSubMenu->GetMenuItemID(i);//获取子菜单项的指针
			if(cmdUI.m_nID==(UINT)-1||cmdUI.m_nID==0)//子菜单项为下拉菜单或分组栏
				continue;
            cmdUI.m_pMenu = pSubMenu;
            cmdUI.DoUpdate(this,false); //发送ON_UPDATE_COMMAND_UI消息

			// 判断是否增加或删除了菜单项
			nCount = pSubMenu->GetMenuItemCount();
			if (nCount < cmdUI.m_nIndexMax)
			{
				cmdUI.m_nIndex -= (cmdUI.m_nIndexMax - nCount);
				while (cmdUI.m_nIndex < nCount && pSubMenu->GetMenuItemID(cmdUI.m_nIndex) == cmdUI.m_nID)
				{
					cmdUI.m_nIndex++;
				}
			}
			cmdUI.m_nIndexMax = nCount;
        }
     }
}

//按钮"测试"的响应函数
void CTestDlg::OnButtonTest() 
{
	if(m_bFlag)
		m_bFlag = FALSE;	
	else
		m_bFlag = TRUE;		
}

//以下四项为菜单的响应和更新函数
void CTestDlg::OnTest11() 
{
	MessageBox("arrive 11");	
}

void CTestDlg::OnUpdateTest11(CCmdUI* pCmdUI) 
{
	pCmdUI->Enable(m_bFlag==TRUE);
}

void CTestDlg::OnTest2() 
{
	MessageBox("arrive 2");
	
}
void CTestDlg::OnUpdateTest2(CCmdUI* pCmdUI) 
{
	pCmdUI->SetCheck(m_bFlag);
	
}