Cannot Display a tooltip for a CNiNumEdit

[schindler]

I have a two member variables:

CEdit m_meterIdEdit;

NI::CNiNumEdit m_bcf;

In my

BOOL CFlowMeter::OnInitDialog()
{
    CPropertyPage::OnInitDialog();
    TRACE("CFlowMeter OnInitDialog was Performed\n");

    // Set up the tooltip
    m_pToolTipCtrl = new CToolTipCtrl;
    if ( !m_pToolTipCtrl->Create(this) )
    {
        TRACE("Unable to create Tooltip\n");
        return TRUE;
    }

    if (!m_pToolTipCtrl->AddTool(&m_meterIdEdit,"Limited to 13 characters which cannot include the following: [\\]^_`{|}~"))
    {
        TRACE("Unable to add Meter 1 ID to the tooltip\n");
    }
    m_bcf.EnableToolTips(TRUE);
    if (!m_pToolTipCtrl->AddTool(&m_bcf,"The Field Calibration is dependent on the following:  Flow Units, Temperature, and Pressure Reference Conditions."))
    {
        TRACE("Unable to add Meter 1 BCF to the tooltip\n");
    }
    m_pToolTipCtrl->Activate(TRUE);
    return TRUE;  // return TRUE unless you set the focus to a control
                  // EXCEPTION: OCX Property Pages should return FALSE
}

The tooltip for the CEdit variable works but the tooltip for the CNiNumEdit does not.

I created another method to check the muse move over the m_bcf control.

void CFlowMeter::MouseMoveM1BiasCfCwnumedit(short Button, short Shift, long x, long y)
{
    // TODO: Add your message handler code here
    TRACE("Mouse Over BCF (%d,%d)\n",x,y);

    CPoint point(x,y);

    TOOLINFO ti = { 0 };
    ti.cbSize = sizeof(TOOLINFO);
    ti.uFlags = TTF_SUBCLASS;
    //ti.hwnd = hwndParent;
    //ti.hwnd = this->m_hWnd;
    ti.hwnd = m_bcf.m_hWnd;
    //ti.hinst = g_hInst;
    ti.hinst = NULL;
    char Text[200];
    sprintf_s(Text, 200,"%d, %d", x, y);
    ti.lpszText = Text;
    //ti.lpszText = TEXT("This is your tooltip text."); //Text;
    //::GetClientRect(this->m_hWnd, &ti.rect );
    //ti.rect.left = 40;
    //ti.rect.top = 16;
    ::GetClientRect(m_bcf.m_hWnd, &ti.rect);

    m_bcf.OnToolHitTest(point, &ti);
}

OnToolHitTest returns 100.  the m_bcf ID is 1031.  

Why won't the text display like the windows built in Edit control.

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[schindler]

I have tried another method assuming the CNiNumEdit is not a child of CFrameWnd.  I have created a child of CNiNumEdit and added methods to handle the TTN_NEETTEXT notifications from the tool tip controls.

in the .h

class CMyNiNumEdit : public NI::CNiNumEdit
{
    DECLARE_DYNAMIC(CMyNiNumEdit)
public:
    CMyNiNumEdit();
    virtual ~CMyNiNumEdit();
    DECLARE_EVENTSINK_MAP()
    afx_msg BOOL OnToolTipText(UINT nID, NMHDR* pNMHDR, LRESULT* pResult);
    DECLARE_MESSAGE_MAP()

protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
};

in the .cpp

IMPLEMENT_DYNAMIC( CMyNiNumEdit, NI::CNiNumEdit )

BEGIN_MESSAGE_MAP(CMyNiNumEdit, NI::CNiNumEdit)
    ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTW, 0, 0xFFFF, OnToolTipText)
    ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTA, 0, 0xFFFF, OnToolTipText)
END_MESSAGE_MAP()

BEGIN_EVENTSINK_MAP(CMyNiNumEdit, NI::CNiNumEdit)
END_EVENTSINK_MAP()

CMyNiNumEdit::CMyNiNumEdit(){}

CMyNiNumEdit::~CMyNiNumEdit(){}

void CMyNiNumEdit::DoDataExchange(CDataExchange* pDX)
{
    NI::CNiNumEdit::DoDataExchange(pDX);
}

BOOL CMyNiNumEdit::OnToolTipText(UINT, NMHDR* pNMHDR, LRESULT* pResult)
{
     ASSERT(pNMHDR->code == TTN_NEEDTEXTA || pNMHDR->code == TTN_NEEDTEXTW);

     // if there is a top level routing frame then let it handle the message
     //if (GetRoutingFrame() != NULL) return FALSE;

     // to be thorough we will need to handle UNICODE versions of the message also !!
     TOOLTIPTEXTA* pTTTA = (TOOLTIPTEXTA*)pNMHDR;
     TOOLTIPTEXTW* pTTTW = (TOOLTIPTEXTW*)pNMHDR;
     TCHAR szFullText[512];
     CString strTipText;
     UINT nID = pNMHDR->idFrom;

     if (pNMHDR->code == TTN_NEEDTEXTA && (pTTTA->uFlags & TTF_IDISHWND) ||
         pNMHDR->code == TTN_NEEDTEXTW && (pTTTW->uFlags & TTF_IDISHWND))
     {
          // idFrom is actually the HWND of the tool
          //nID = ::GetDlgCtrlID((HWND)nID);
         // Work-around for CNiControls returning nID = 0 with
        // ::GetDlgCtrlID((HWND)nID)
        CWnd* cwnd = this->FromHandle((HWND)nID);
        nID = cwnd->GetDlgCtrlID();
     }

     if (nID != 0) // will be zero on a separator
     {
          AfxLoadString(nID, szFullText);
          strTipText=szFullText;

#ifndef _UNICODE
          if (pNMHDR->code == TTN_NEEDTEXTA)
          {
               lstrcpyn(pTTTA->szText, strTipText, sizeof(pTTTA->szText));
          }
          else
          {
               _mbstowcsz(pTTTW->szText, strTipText, sizeof(pTTTW->szText));
          }
#else
          if (pNMHDR->code == TTN_NEEDTEXTA)
          {
               _wcstombsz(pTTTA->szText, strTipText,sizeof(pTTTA->szText));
          }
          else
          {
               lstrcpyn(pTTTW->szText, strTipText, sizeof(pTTTW->szText));
          }
#endif

          *pResult = 0;

          // bring the tooltip window above other popup windows
          ::SetWindowPos(pNMHDR->hwndFrom, HWND_TOP, 0, 0, 0, 0,SWP_NOACTIVATE|
               SWP_NOSIZE|SWP_NOMOVE|SWP_NOOWNERZORDER);
          return TRUE;
     }
     return FALSE;
}

Now a tooltip window appears, but the text is incorrect.  I am unable to correctly retreive the nID from the unit.  Even with the offered solution found in the forums.  See

          // idFrom is actually the HWND of the tool
          //nID = ::GetDlgCtrlID((HWND)nID);
         // Work-around for CNiControls returning nID = 0 with
        // ::GetDlgCtrlID((HWND)nID)
        CWnd* cwnd = this->FromHandle((HWND)nID);
        nID = cwnd->GetDlgCtrlID();

Thank you for your time,

Scott

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[Snowman 6008]

Hey, what version of Visual Studio and Measurement studio? There is a known bug with .NET 1.1: Tooltips Not Appearing on Measurement Studio Numeric Edit .NET Controls

[schindler]

Richard,

I have VS2005 and MS 8.5.

I believe VS2005 uses .NET 2 not 1.1.

Scott

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[Snowman 6008]

That is correct, VS2005 uses .NET 2. Can you post a simple zipped project with a CNiNumEdit and some other item with a tooltip?

[schindler]

Here is a stripped version of my program.  After building, run the program and you will see the Wizard option in the menu bar. Choose it.  A PropertySheet will be displayed with a PropertyPage that has data on it.  I can display the tooltips for VS 2005 native tools like the CEdit for Meter Identification, but cannot display them for the CNiNumEdit class unless I create a child class  with the proper handlers.  Even then I cannot display the proper tool tip.  See CMyNiNumEdit and the Field Cal Correction Factor on the PropertyPage.  See any of the other CNiNumEdit fields for tooltips not being displayed.

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[Snowman 6008]

Have you tried replacing

 CWnd* cwnd = this->FromHandle((HWND)nID);
        nID = cwnd->GetDlgCtrlID();

With this  code?

 nID = this->GetDlgCtrlID();

[schindler]

That worked but now I am limited to 80 characters.  How do I increase that to be dynamic or set the limit higher?

Thank you for your help.

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[schindler]

Also why do I have to create a child class to get this to work?  Why is this functionality not already included in the class?

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[schindler · Accepted solution]

I figured out how to adjust the length and the tooltip autopop time.  Here are the changes required.  They are all located in the following method except for a new member data     TCHAR ToolTipText[512];
I have changed the color of the modified code.

BOOL CMyNiNumEdit::OnToolTipText(UINT id, NMHDR* pNMHDR, LRESULT* pResult)
{
     ASSERT(pNMHDR->code == TTN_NEEDTEXTA || pNMHDR->code == TTN_NEEDTEXTW);

     // if there is a top level routing frame then let it handle the message
     //if (GetRoutingFrame() != NULL) return FALSE;

     // to be thorough we will need to handle UNICODE versions of the message also !!
     TOOLTIPTEXTA* pTTTA = (TOOLTIPTEXTA*)pNMHDR;
     TOOLTIPTEXTW* pTTTW = (TOOLTIPTEXTW*)pNMHDR;
     //TCHAR szFullText[512];
     //CString strTipText;
     UINT nID = pNMHDR->idFrom;

     if (pNMHDR->code == TTN_NEEDTEXTA && (pTTTA->uFlags & TTF_IDISHWND) ||
         pNMHDR->code == TTN_NEEDTEXTW && (pTTTW->uFlags & TTF_IDISHWND))
     {
        // idFrom is actually the HWND of the tool
        //nID = ::GetDlgCtrlID((HWND)nID);
        // Work-around for CNiControls returning nID = 0 with
        // ::GetDlgCtrlID((HWND)nID)
        //CWnd* cwnd = this->FromHandle((HWND)nID);
        //nID = cwnd->GetDlgCtrlID();
        //Suggested by NI on the forum NI Discussion Forums : Most Active Software Boards :
        // Measurement Studio for VC++  : Cannot Display a tooltip for a CNiNumEdit
        nID = this->GetDlgCtrlID();
     }

     if (nID != 0) // will be zero on a separator
     {
          //AfxLoadString(nID, szFullText);
          AfxLoadString(nID, ToolTipText);
          //strTipText=szFullText;

#ifndef _UNICODE
          if (pNMHDR->code == TTN_NEEDTEXTA)
          {
               //lstrcpyn(pTTTA->szText, strTipText, sizeof(pTTTA->szText));
               pTTTA->lpszText = ToolTipText;
          }
          else
          {
               //_mbstowcsz(pTTTW->szText, strTipText, sizeof(pTTTW->szText));
               // Convert from char * to wchar_t *
               size_t convertedChars = 0;
               wchar_t wcstring[512];
               mbstowcs_s(&convertedChars, wcstring, 512, ToolTipText,_TRUNCATE);
               pTTTW->lpszText = wcstring;
          }
#else
          if (pNMHDR->code == TTN_NEEDTEXTA)
          {
               //_wcstombsz(pTTTA->szText, strTipText,sizeof(pTTTA->szText));
               pTTTA->lpszText = ToolTipText;
          }
          else
          {
               //lstrcpyn(pTTTW->szText, strTipText, sizeof(pTTTW->szText));
               // Convert from char * to wchar_t *
               size_t convertedChars = 0;
               wchar_t wcstring[512];
               mbstowcs_s(&convertedChars, wcstring, 512, ToolTipText,_TRUNCATE);
               pTTTW->lpszText = wcstring;
          }
#endif

          *pResult = ::SendMessage(pNMHDR->hwndFrom, (UINT)TTM_SETDELAYTIME, (WPARAM)(DWORD)TTDT_AUTOPOP, (LPARAM)MAKELONG(15000,0));

          // bring the tooltip window above other popup windows
          ::SetWindowPos(pNMHDR->hwndFrom, HWND_TOP, 0, 0, 0, 0,SWP_NOACTIVATE|
               SWP_NOSIZE|SWP_NOMOVE|SWP_NOOWNERZORDER);
          return TRUE;
     }
     return FALSE;
}

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