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Adding a clock to the status bar

Posted by Roger Onslow on August 6th, 1998
Here is how to add the current time to your status bar...

Step 1:

Derive a CMyStatusBar class from CStatusBar as follows: 
//MyStatusBar.h:
//==============
class CMyStatusBar : public CStatusBar {
     DECLARE_DYNCREATE(CMyStatusBar)
public:
     CMyStatusBar();
     ~CMyStatusBar();
private:
     CString m_strClockFormat;
public:
     void SetClockFormat(LPCTSTR strClockFormat);
     // Overrides
     // ClassWizard generated virtual function overrides
     //{{AFX_VIRTUAL(CMyStatusBar)
     //}}AFX_VIRTUAL
     // Generated message map functions
     //{{AFX_MSG(CMyStatusBar)
     afx_msg void OnDestroy();
     afx_msg void OnUpdateIndicatorTime(CCmdUI* pCmdUI);
     afx_msg int OnCreate( LPCREATESTRUCT lpCreateStruct );
     //}}AFX_MSG
     DECLARE_MESSAGE_MAP()
};


/////////////////////////////////////////////////////////////////
//MyStatusBar.cpp:
//==============
#include "stdafx.h"
#include "MyStatusBar.h"
#include "Resource.h"

#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

IMPLEMENT_DYNCREATE(CMyStatusBar, CStatusBar)

BEGIN_MESSAGE_MAP(CMyStatusBar, CStatusBar)
ON_WM_CREATE()
ON_WM_DESTROY()
ON_UPDATE_COMMAND_UI(ID_INDICATOR_TIME, OnUpdateIndicatorTime)
END_MESSAGE_MAP()

CMyStatusBar::CMyStatusBar()
: CStatusBar()
, m_strClockFormat("%H:%M:%S")
{
}

CMyStatusBar::~CMyStatusBar() {
}

void CMyStatusBar::SetClockFormat(LPCTSTR strClockFormat) {
     m_strClockFormat = strClockFormat;
}

int CMyStatusBar::OnCreate(LPCREATESTRUCT lpCreateStruct) {
     // make sure time gets updated every second, even when idle
     CStatusBar::OnCreate(lpCreateStruct);
     SetTimer(ID_INDICATOR_TIME,1000,NULL);
     return 0;
}

void CMyStatusBar::OnUpdateIndicatorTime(CCmdUI* pCmdUI) {
     pCmdUI->Enable(true);
     pCmdUI->SetText(CTime::GetCurrentTime().Format(m_strClockFormat));
}

void CMyStatusBar::OnDestroy() {
     KillTimer(ID_INDICATOR_TIME);
     ProgressDestroy();
     CStatusBar::OnDestroy();
}

Step 2:

Create a new indicator pane by first adding a new menu called "ID_INDICATOR", add a single dropdown called "Indicator", add a single item to the menu called "Time" - This should create a menu item with id ID_INDICATOR_TIME. Give it a prompt string of, say, "HH:MM:SS" which reserves an approriate amount of space for the pane. NOTE: If you change time format by calling SetClockFormat you will need to ensure that your ID_INDICATOR_TIME pane is big enough.

Step 3:

Add a new indicator pane called ID_INDICATOR_TIME to your list of indicator in your mainframe eg. this is my indicator list... 
static const UINT indicators[] = {
     ID_SEPARATOR,           // status line indicator
     ID_INDICATOR_CAPS,
     ID_INDICATOR_NUM,
     ID_INDICATOR_SCRL,
     ID_INDICATOR_TIME,  // <-- new indicator pane
};

Step 4:

Replace all existing uses of CStatusBar in your app with CMyStatusBar - in particular, the member variable in your mainframe m_wndStatusBar;

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Comments

  • Time is not accurate

    Posted by Legacy on 08/10/2002 12:00am

    Originally posted by: Amir

    Has anyone noticed that the time is not very accurate. I use the SetTimer() method with a value of 1000 and the timer always runs faster than the actual time. Is there a more accurate way to keep time?

    -Amir

    Reply

  • SetTextAlign

    Posted by Legacy on 04/29/2002 12:00am

    Originally posted by: ray 

    How could I apply SetTextAlign function in StatusBar ?

    Reply

  • Adding a clock to the status bar in A Dialog Box

    Posted by Legacy on 12/06/2001 12:00am

    Originally posted by: Dhayalan

    The Following part of the Code Wil be Used to Create a Status bar in Dialog box and Update the Panes of the Status Bar. Normally The Status bar will be attached to a CMainFrame object and we need to Send a ON_UPDATE_COMMAND_UI message to update the Controls.
    Since it is a DialogBased Appliation we don't have CMainFrame, we have to send the message direly to the Pane.

    This is a Simple Application with four pane with Date and Time.

    Step 0:
    --------
    Declare these Variables in the .h file
    CStatusBar m_StatBar;

    step1 :
    -------
    Add the Pane Indicators in the Resource file and add strings for the Coressponding Id's

    In MyDialog.cpp


    static UINT indicators[]={
    ID_INDICATOR_TESTING,
    ID_INDICATOR_TEST_PROG,
    ID_INDICATOR_DATE,
    ID_INDICATOR_TIME
    };

    Step2:
    -----
    Add these Message handler Manualy and By using Clwizard

    BEGIN_MESSAGE_MAP(CCheckDlg, CDialog)
    //{{AFX_MSG_MAP(CCheckTIDlg)
    ON_WM_TIMER()
    ON_WM_CREATE()
    //}}AFX_MSG_MAP
    ON_UPDATE_COMMAND_UIID_INDICATOR_TIME,OnUpdateTimer)
    END_MESSAGE_MAP()


    step3:
    ------
    Add this Code in to the Corrosponding Functions

    int CCheckDlg::OnCreate(LPCREATESTRUCT lpCreateStruct)
    {
    if (CDialog::OnCreate(lpCreateStruct) == -1)
    return -1;

    CRect rect;
    this->GetWindowRect(&rect);
    rect.top = rect.bottom- 25;

    m_StatBar.GetStatusBarCtrl().Create(WS_CHILD | WS_BORDER | WS_VISIBLE|SBARS_SIZEGRIP|CCS_BOTTOM ,rect,this,
    IDC_MY_SATUSBAR);
    m_StatBar.SetIndicators(indicators,sizeof(indicators)/sizeof(UINT));

    m_StatBar.SetPaneInfo(0,ID_INDICATOR_TESTING,SBPS_NORMAL ,60);
    m_StatBar.SetPaneInfo(1,ID_INDICATOR_TEST_PROG,SBPS_NORMAL ,170);
    m_StatBar.SetPaneInfo(2,ID_INDICATOR_DATE,SBPS_NORMAL,50);
    m_StatBar.SetPaneInfo(3,ID_INDICATOR_TIME,SBPS_STRETCH,60);

    SetTimer(1,100,NULL);
    return 0;

    }

    void CCheckDlg::OnTimer(UINT nIDEvent)
    {

    har tmpbuf[50];
    _strdate(tmpbuf);
    m_StatBar.SetPaneText(2,tmpbuf,TRUE);

    CTime theTime=CTime::GetCurrentTime();
    CString szTime;
    szTime=theTime.Format(" %I:%M:%S");
    m_StatBar.SetPaneText(3,szTime,TRUE);
    CDialog::OnTimer(nIDEvent);
    }
    Reg,
    Dhayalan.V

    Reply

  • I use this code...(for MFC Dialogs !!)

    Posted by Legacy on 06/09/2001 12:00am

    Originally posted by: Sebastian 

    ...your idea is not very successful!

    My Code uses the Class Item WM_TIMER added from the Class Assistent


    /// starts here ///

    void Arbeiten::OnTimer(UINT nIDEvent) 

    {

    	CString csUhr;

    	switch ( nIDEvent )

    	{

    	case 0x3B0 :

    			COleDateTime dZeit = COleDateTime::GetCurrentTime();


    		    csUhr.Format ("%02d.%02d.%02d", dZeit.GetHour(), dZeit.GetMinute(), dZeit.GetSecond() );

    			GetDlgItem(IDC_uhr)->SetWindowText(csUhr);


    					break;

    	}

    	CPropertyPage::OnTimer(nIDEvent);

    }

    /// My program uses CPropertyPage ;-P

    /// end

    Reply

  • Problems in NT

    Posted by Legacy on 02/03/2000 12:00am

    Originally posted by: Miguel Angel

    I have tried to use your code in Windows NT, but in the CMainFrame::OnCreate(), in the portion of code:
    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
    }

    The call to SetIndicators returns a 0. Any idea about the solution?
    I had no trouble in Windows 95/98.

    Best regards,
    Miguel Angel

    Reply

  • Dangerous situation

    Posted by Legacy on 03/04/1999 12:00am

    Originally posted by: Tom Bech

    1. By the way, this identical method are presented on MSDN KB Q99198. There are also method with global timer.
    2. When I implemented this method I have got serious problem: my time didn't work when I opened child window (time didn't appear). When I closed child window time appear.
    Reason: I like order, so I added ID_INDICATOR_TIME in string table just after ID_INDICATOR_REC and it has number up one to the previous.
    There was no warning from Visual Studio. But this number corresponds to
    ID_INDICATOR_KANA which has own implementation UI in CFrameWnd.
    My timer worked (when was no child window) because my implementation
    of time UI hides standard implementation of ID_INDICATOR_KANA
    (in class CMainFrame). But in class CChildFrame there was no my
    implementation and after opening child window my time works as
    ID_INDICATOR_KANA (by the way, what is it: 'kana'?!?).
    Solution: Set unique value for ID_INDICATOR_TIME.
    (and don't like order when you work with MFC)

    (sorry for my 'english')

    Reply

  • Ever-living timer

    Posted by Legacy on 02/12/1999 12:00am

    Originally posted by: Alex Rogovtsev 

    One way to keep timer alive is to use an application-defined TimerProc callback function

       SetTimer(0x1000, 1000, TimerProc)

    instead of installing WM_TIMER message in application's message queue 

       SetTimer(0x1000, 1000, NULL)


    So you should do only a few step to keep timer alive:

    (Let's do this for a simple SDI application)


    Step 1:

    Insert in your CMainFrame::OnCreate() function only one statement

    int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)

    {

    	if (CFrameWnd::OnCreate(lpCreateStruct) == -1) return -1;

    	if (!m_wndStatusBar.Create(this) ||

    		!m_wndStatusBar.SetIndicators(indicators,

    		  sizeof(indicators)/sizeof(UINT)))

    		return -1;	// fail to create

    	m_wndStatusBar.SetTimer(0x1000, 1000, TimerProc);	//<-- new statement

    	return 0;

    }


    Step 2:

    Add application defined function TimerProc() to your CMainFrame.cpp file

    void CALLBACK EXPORT TimerProc(HWND hWnd, UINT nMsg, UINT nIDEvent, DWORD dwTime)

    {

    CCmdUI cui;

    CMainFrame *pMainWnd = (CMainFrame *)AfxGetMainWnd();	//this is for SDI project

    	cui.m_nID = ID_INDICATOR_TIME;

    	cui.m_nIndex = pMainWnd->m_wndStatusBar.CommandToIndex(ID_INDICATOR_TIME);

    	cui.m_pMenu = NULL;

    	cui.m_pOther = &pMainWnd->m_wndStatusBar;

    	pMainWnd->OnUpdateTime(&cui);

    }


    Step 3:

    Add ON_UPDATE_COMMAND message handler to CMainFrame message map

    BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)

    	ON_UPDATE_COMMAND_UI(ID_INDICATOR_TIME, OnUpdateTime)

    	//{{AFX_MSG_MAP(CMainFrame)

    		// NOTE - the ClassWizard will add and remove mapping macros here.

    		//    DO NOT EDIT what you see in these blocks of generated code !

    	ON_WM_CREATE()

    	//}}AFX_MSG_MAP

    END_MESSAGE_MAP()


    add OnUpdateTime() function to CMainFrame class


    void CMainFrame::OnUpdateTime(CCmdUI* pCmdUI)

    {

    	// Get current date and format it

    CTime time = CTime::GetCurrentTime();

    CString strTime = time.Format(_T("%X"));

    	m_wndStatusBar.SetPaneText(m_wndStatusBar.CommandToIndex(ID_INDICATOR_TIME),strTime);

    	pCmdUI->Enable(TRUE);


    }


    Step 4:

    Add a new indicator pane called ID_INDICATOR_TIME to your list of indicator in your CMainFrame indicator
list.


    static const UINT indicators[] = {

    	 ID_SEPARATOR,		 // status line indicator

    	 ID_INDICATOR_CAPS,

    	 ID_INDICATOR_NUM,

    	 ID_INDICATOR_SCRL,

    	 ID_INDICATOR_TIME,  // <-- new indicator pane

    };

    Step 4:

    Add a new string with ID_INDICATOR_TIME to a string table and set its caption to "00:00:00"

     Step 5:

       Remove m_wndStatusBar from protected section in CMainFrame.h and add it to public section

     

       Remove afx_msg void OnUpdateTime(CCmdUI* pCmdUI) function from protected message map and add it to
public section


    public:

    	afx_msg void OnUpdateTime(CCmdUI* pCmdUI);

    	// Generated message map functions

    protected:

    	//{{AFX_MSG(CMainFrame)

    	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);

    		// NOTE - the ClassWizard will add and remove member functions here.

    		//    DO NOT EDIT what you see in these blocks of generated code!

    	//}}AFX_MSG

    	DECLARE_MESSAGE_MAP()


    That's all - your timer will live forever!


    This is a sample project that illustrate this method Timer.zip

    Reply

  • Timer is frozen.

    Posted by Legacy on 11/27/1998 12:00am

    Originally posted by: L. Chang 

    Because WM_TIMER is a low-priority message, if the program is doing a

    time-consuming work and displays the progress at the same time, the 

    timer on the status bar is frozen. Any method to keep the timer "alive"?

    Reply
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