Add tooltip to a CStatic - mfc

Question

I haven't been able to find a concise chunk of code that allows me to add/display tooltips to a CStatic (and CLed) control. Obviously, the standard code to do so does not apply for this type of control. Can someone post code snippets?

Answer 1

I hope this code will solve your problem .One important thing make NOTIFY property of CStatic =TRUE.
if( !m_ToolTip.Create(this))
{
TRACE0("Unable to create the ToolTip!");
}
else
{
CWnd* pWnd = GetDlgItem(IDC_STATIC_MASTER_PWD);
m_ToolTip.AddTool(pWnd,"Ok");
m_ToolTip.Activate(TRUE);
}
Let me know if any problem.

Answer 2

I don't know if this is still needed, but here's what I used to solve the problem:
just add SS_NOTIFY to dwStyle when creating the static label. (or simply set "Nofity" "True" in the properties). That worked fine for me.

Answer 3

When I add CStatic on Dialog based autocreated mfc application, tooltips don't show until I add RelayEvent in pretranslate dialog message
BOOL CTooltipStaticDlg::PreTranslateMessage(MSG* pMsg)
{
m_ToolTip.RelayEvent(pMsg);
return CDialog::PreTranslateMessage(pMsg);
}

Answer 4

I've had success with multiline tooltips using this simple class:
Create a class for ToolTips:
class ToolTip
{
public:
static HWND CreateToolTip(int toolID, HWND hDlg, UINT id);
};
Next, implement a tooltip creation function:
HWND ToolTip::CreateToolTip(int toolID, HWND hDlg, UINT id)
{
if (!toolID || !hDlg || !id)
{
return FALSE;
}
CString strTTText;
strTTText.LoadString( id );
// Get the window handle of the control to attach the TT to.
HWND hwndTool = ::GetDlgItem(hDlg, toolID);
// Create the tooltip window
HWND hwndTip = CreateWindowEx(NULL, TOOLTIPS_CLASS, NULL,
WS_POPUP |TTS_ALWAYSTIP,// | TTS_BALLOON,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
hDlg, NULL,
AfxGetInstanceHandle() , NULL);
if (!hwndTool || !hwndTip)
{
return (HWND)NULL;
}
// Associate the tooltip with the tool.
TOOLINFO toolInfo = { 0 };
toolInfo.cbSize = sizeof(toolInfo);
toolInfo.hwnd = hDlg;
toolInfo.uFlags = TTF_IDISHWND | TTF_SUBCLASS;
toolInfo.uId = (UINT_PTR)hwndTool;
toolInfo.lpszText = (char*)(LPCTSTR)strTTText;
::SendMessage(hwndTip, TTM_ADDTOOL, 0, (LPARAM)&toolInfo);
::SendMessageA(hwndTip, TTM_SETMAXTIPWIDTH, 0, 40); // force multi-line
return hwndTip;
}
Call it somewhere in your InitDialog:
CMyDialog::InitDialog()
{
ToolTip::CreateToolTip( PickAUniqueNumber, m_hWnd, IDS_MY_RESOURCE_STRING );
}

Answer 5

I've had on my dialog label with assigned custom ID IDC_PATH. I needed to turn on Notify flag (SS_NOTIFY) of the label and I needed to overload CWnd method OnToolHitTest and handle tooltip hit test like this:
INT_PTR CPath::OnToolHitTest(CPoint point, TOOLINFO* pTI) const
{
INT_PTR r = CWnd::OnToolHitTest(point,pTI);
this->ClientToScreen(&point);
CRect rcLbl;
GetDlgItem(IDC_PATH)->GetWindowRect(&rcLbl);
if( rcLbl.PtInRect(point) )
{
pTI->uFlags |= TTF_IDISHWND;
pTI->uFlags &= ~TTF_NOTBUTTON;
pTI->uId = (UINT_PTR)GetDlgItem(IDC_PATH)->m_hWnd;
return IDC_PATH;
}
return r;
}
Then my dialog started to receive TTN_NEEDTEXT notification, which I handled and dynamicaly set text for tooltip.
BOOL CPath::OnTtnNeedText(UINT id, NMHDR *pNMHDR, LRESULT *pResult)
{
UNREFERENCED_PARAMETER(id);
TOOLTIPTEXT *pTTT = (TOOLTIPTEXT *)pNMHDR;
UINT_PTR nID = pNMHDR->idFrom;
BOOL bRet = FALSE;
if (pTTT->uFlags & TTF_IDISHWND)
{
// idFrom is actually the HWND of the tool
nID = ::GetDlgCtrlID((HWND)nID);
if(nID == IDC_PATH)
{
pTTT->lpszText = (LPSTR)(LPCTSTR)m_FullDestPath;
bRet = TRUE;
}
}
*pResult = 0;
return bRet;
}