如何隐藏显示在任务栏中的对话框程序

如何隐藏显示在任务栏中的对话框程序


作者：NorthTibet

下载源代码


    最近有个朋友做了一个基于对话框的小程序，大家知道，一般具有用户界面的 Windows 程序运行起来后，通常都会在任务栏里体现出来。我的这个朋友不想让她做的对话框程序运行的时候显示在任务栏里。问我如何隐藏？我参考了 MSDN 后告诉她说使用 WS_EX_TOOLWINDOW 扩展窗口式样。她按照我说的方法试了一下，结果没有成功。后来我琢磨了半天，发现这件事情并不像文档中说的那么简单。MSDN 里对 WS_EX_APPWINDOW 的描述是这样的：

      用 WS_EX_TOOLWINDOW 可以创建一个工具窗口，被作为浮动工具栏使用。工具窗口的标      题栏比常规标题栏短，并且使用的窗口字体更小。工具窗口不会出现在任务栏里；当用户      按下 ALT+TAB 健后，也不会出现在任务表中......

////////////////////////////////////////////////////////////////// HideDlg.cpp 声明部分// ////////////////////////////////////////////////////////////////#include "stdafx.h"#include "resource.h"#include "statlink.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endifclass CMainFrame : public CFrameWnd {protected:CString m_sClassName;virtual BOOL PreCreateWindow(CREATESTRUCT& cs);public:CMainFrame() { }~CMainFrame() { }};class CMyDlg : public CDialog {public:CMyDlg(CWnd* pParent = NULL); // 标准构造函数protected:HICON m_hIcon;CStaticLinkm_wndLink;virtual BOOL OnInitDialog();afx_msg void OnSysCommand(UINT nID, LPARAM lParam);afx_msg void OnPaint();afx_msg HCURSOR OnQueryDragIcon();DECLARE_MESSAGE_MAP()};class CMyApp : public CWinApp {public:CMyApp();virtual BOOL InitInstance();DECLARE_MESSAGE_MAP()};//////////////////////////////////////////////////////// HideDlg.cpp 实现部分////////////////////////////////////////////////////////// 创建不可见框架窗口：设置 WS_EX_TOOLWINDOW 式样BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs){/*// 设置 WS_EX_TOOLWINDOW 扩展式样if (CFrameWnd::PreCreateWindow(cs)) {cs.dwExStyle |= WS_EX_TOOLWINDOW;return TRUE;}return FALSE;*/// 不设置 WS_EX_TOOLWINDOW 扩展式样return CFrameWnd::PreCreateWindow(cs);}BEGIN_MESSAGE_MAP(CMyApp, CWinApp)ON_COMMAND(ID_HELP, CWinApp::OnHelp)END_MESSAGE_MAP()CMyApp::CMyApp(){}CMyApp theApp;////////////////////////////////////////////////////////////////////////// InitInstance: 创建对话框时，把它作为不可见主框架窗口的子窗口对待//////////////////////////////////////////////////////////////////////////BOOL CMyApp::InitInstance(){CMainFrame* pFrame = new CMainFrame;m_pMainWnd = pFrame;pFrame->LoadFrame(IDR_MAINFRAME, WS_OVERLAPPED, NULL, NULL);CMyDlg dlg(pFrame);int nResponse = dlg.DoModal();if (nResponse == IDOK) {} else if (nResponse == IDCANCEL) {}return FALSE;}class CAboutDlg : public CDialog {public:CAboutDlg();enum { IDD = IDD_ABOUTBOX };protected:CStaticLinkm_wndLink1;CStaticLinkm_wndLink2;CStaticLinkm_wndLink3;// Implementationprotected://{{AFX_MSG(CAboutDlg)virtual BOOL OnInitDialog();//}}AFX_MSGDECLARE_MESSAGE_MAP()};CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD){}BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)END_MESSAGE_MAP()BOOL CAboutDlg::OnInitDialog() {CDialog::OnInitDialog();m_wndLink1.m_link = _T("http://www.vckbase.com");m_wndLink2.m_link = _T("http://www.vckbase.com");m_wndLink3.m_link = _T("http://www.vckbase.com");m_wndLink1.SubclassDlgItem(IDC_STATIC_ICON, this);m_wndLink2.SubclassDlgItem(IDC_VCKBASE, this);m_wndLink3.SubclassDlgItem(IDB_STATIC_IMG, this);return TRUE;  // return TRUE unless you set the focus to a control              // EXCEPTION: OCX Property Pages should return FALSE}CMyDlg::CMyDlg(CWnd* pParent /*=NULL*/): CDialog(IDD_HIDEDLG, pParent){m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);}BEGIN_MESSAGE_MAP(CMyDlg, CDialog)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()END_MESSAGE_MAP()BOOL CMyDlg::OnInitDialog(){CDialog::OnInitDialog();m_wndLink.m_link = _T("http://www.vckbase.com");m_wndLink.SubclassDlgItem(IDC_VCKBASE, this);//  去掉注释设置对话框的 WS_EX_APPWINDOW 扩展式样//ModifyStyleEx(0,WS_EX_APPWINDOW);// IDM_ABOUTBOX must be in the system command range.ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX < 0xF000);CMenu* pSysMenu = GetSystemMenu(FALSE);if (pSysMenu != NULL) {CString strAboutMenu;strAboutMenu.LoadString(IDS_ABOUTBOX);if (!strAboutMenu.IsEmpty()) {pSysMenu->AppendMenu(MF_SEPARATOR);pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);}}// 设置对话框图标。// 当应用程序的主窗口不是对话框时，框架会自动设置图标。SetIcon(m_hIcon, TRUE);       // 设置大图标SetIcon(m_hIcon, FALSE);      // 设置小图标return TRUE;  // return TRUE  unless you set the focus to a control}void CMyDlg::OnSysCommand(UINT nID, LPARAM lParam){if ((nID & 0xFFF0) == IDM_ABOUTBOX) {CAboutDlg dlgAbout;dlgAbout.DoModal();} else {CDialog::OnSysCommand(nID, lParam);}}// 如果在对话框上添加最小化按钮，必须用CMyDlg::OnPaint() 绘制图标，// MFC 用文档/视图模型，由框架自动处理。 void CMyDlg::OnPaint() {if (IsIconic()) {CPaintDC dc(this); // device context for paintingSendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);// Center icon in client rectangleint cxIcon = GetSystemMetrics(SM_CXICON);int cyIcon = GetSystemMetrics(SM_CYICON);CRect rect;GetClientRect(&rect);int x = (rect.Width() - cxIcon + 1) / 2;int y = (rect.Height() - cyIcon + 1) / 2;// Draw the icondc.DrawIcon(x, y, m_hIcon);} else {CDialog::OnPaint();}}// 当用户要求最小化窗口时，系统调用此函数获取要显示的图标。 HCURSOR CMyDlg::OnQueryDragIcon(){return (HCURSOR) m_hIcon;}

     ModifyStyleEx(0,WS_EX_APPWINDOW);

      EXSTYLE WS_EX_APPWINDOW