ToolTip not show in my DLL ???

[LostTemper]

Hi,
I write a CMyButton class that drived from CButton.
While i used the class in Exe project, i works fine.
But when my project is DLL, the button's tooltip didn't show.

Pls help me!

[LostTemper]

no body knows ??

[LostTemper]

My dll is regular dll. and dialog is modeless dialog.

[Ray88]

For Dialog there are some extra work, try the following:
How to display tooltips for a toolbar in a dialog
This article was contributed by Randy More.

It is relatively easy to place a toolbar in a dialog box, but I had a hard time making the tooltips appear since none of the TTN_xxxx message handlers are present in a CDialog derived class. This article describes a simple technique for getting tooltips when you have a toolbar in a dialog. It also gives a brief overview of the steps involved in adding a toolbar to a dialog box.

Step 1

In the dialog's header file you must add a CToolBar instance and an entry in the message map to handle the tooltip messages.

protected:
CToolBar cToolBar;


at the bottom of the wizard generated message map entries add:

//}}AFX_MSG
afx_msg BOOL OnToolTipText(UINT nID, NMHDR* pNMHDR, LRESULT* pResult);
DECLARE_MESSAGE_MAP()


Step 2

In dialog's implementation file add the following to the end of OnInitDialog to show the toolbar.

//add the tool bar to the dialog
cToolBar.Create(this);
cToolBar.LoadToolBar(IDR_TOOLBAR);
cToolBar.ShowWindow(SW_SHOW);
cToolBar.SetBarStyle(CBRS_ALIGN_TOP | CBRS_TOOLTIPS | CBRS_FLYBY);
RepositionBars(AFX_IDW_CONTROLBAR_FIRST, AFX_IDW_CONTROLBAR_LAST, 0);


At the bottom of the message map add the following:

AFX_MSG_MAP
ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTW, 0, 0xFFFF, OnToolTipText)
ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTA, 0, 0xFFFF, OnToolTipText)
END_MESSAGE_MAP()


Finally add the message handler method as entered in the message map:

BOOL CToolBarTipTestDialog::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);
}

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

#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;
}
}


Regards,

Ray

[LostTemper]

Any body have some good suggestion?