Tooltips for CStatusBar Panes

Roger Longren -- rlongren@execpc.com
Wednesday, October 16, 1996

Environment : VC++ 4.0, Win 95

I am trying to utilize tooltips for a single pane in my CStatusBar.  Using
my method I can get the tooltip to display, but it always displays below
the center of the entire status bar.  The desired position is near the pane
for which the tooltip applies.

Here's what I've got:

In my MDI app CMainFrame I've added the following to my message map:
	ON_NOTIFY_EX_RANGE(TTN_NEEDTEXT, 0, 0xFFFF, OnToolTipNotify).

In my CMainFrame::OnCreate() I've got this:
	EnableToolTips(TRUE);

I've got a CMainFrame::OnToolTipNotify that looks like this:
BOOL CMainFrame::OnToolTipNotify( UINT, NMHDR * pNMHDR, LRESULT *) {
	TOOLTIPTEXT *pTTT = (TOOLTIPTEXT *)pNMHDR;
    	UINT nID =pNMHDR->idFrom;
    	if (pTTT->uFlags & TTF_IDISHWND){
        	UINT nID2 = ::GetDlgCtrlID((HWND)nID);
        	if(nID2){
		HWND hwnd = (HWND)m_wndStatusBar.GetSafeHwnd();
		// Is the tooltip notification for the statusbar?
		if(hwnd == (HWND) nID){
			// Get the cursor position
			POINT point;
			GetCursorPos(&point);
			// Determine whether cursor is in the time pane
			CRect rect;
		
m_wndStatusBar.GetItemRect(m_wndStatusBar.CommandToIndex(ID_INDICATOR_TIME),
&rect);
			ClientToScreen(&rect);
			if(rect.left <= point.x && rect.right >= point.x){
				strcpy(pTTT->szText, "Hello - I am in the time pane");
				pTTT->hinst = NULL;
				return TRUE;
			}
		}
        	}
    }
    return FALSE;
}

If anyone has done this successfully before I'd appreciate any tips.

Thanks in advance,
Roger

---

Mark Conway -- mrc@mfltd.co.uk
Thursday, October 17, 1996

[Mini-digest: 2 responses]

I added tooltips to a status bar by deriving from CStatusBar, and
overriding OnToolHitTest() to return the tooltip string ID's for
individual panes. You don't really want to override the MFC CFrameWnd
TTN_NEEDTEXT notification, because it involves copying quite a lot of
code. 


Mark.


>----------
>From: 	Roger Longren[SMTP:rlongren@execpc.com]
>Sent: 	16 October 1996 14:33
>To: 	mfc-l@netcom.com
>Subject: 	Tooltips for CStatusBar Panes
>
>Environment : VC++ 4.0, Win 95
>
>I am trying to utilize tooltips for a single pane in my CStatusBar.  Using
>my method I can get the tooltip to display, but it always displays below
>the center of the entire status bar.  The desired position is near the pane
>for which the tooltip applies.
>
>Here's what I've got:
>
>In my MDI app CMainFrame I've added the following to my message map:
>	ON_NOTIFY_EX_RANGE(TTN_NEEDTEXT, 0, 0xFFFF, OnToolTipNotify).
>
>In my CMainFrame::OnCreate() I've got this:
>	EnableToolTips(TRUE);
>
>I've got a CMainFrame::OnToolTipNotify that looks like this:
>BOOL CMainFrame::OnToolTipNotify( UINT, NMHDR * pNMHDR, LRESULT *) {
>	TOOLTIPTEXT *pTTT = (TOOLTIPTEXT *)pNMHDR;
>    	UINT nID =pNMHDR->idFrom;
>    	if (pTTT->uFlags & TTF_IDISHWND){
>        	UINT nID2 = ::GetDlgCtrlID((HWND)nID);
>        	if(nID2){
>		HWND hwnd = (HWND)m_wndStatusBar.GetSafeHwnd();
>		// Is the tooltip notification for the statusbar?
>		if(hwnd == (HWND) nID){
>			// Get the cursor position
>			POINT point;
>			GetCursorPos(&point);
>			// Determine whether cursor is in the time pane
>			CRect rect;
>		
>m_wndStatusBar.GetItemRect(m_wndStatusBar.CommandToIndex(ID_INDICATOR_TIME),
>&rect);
>			ClientToScreen(&rect);
>			if(rect.left <= point.x && rect.right >= point.x){
>				strcpy(pTTT->szText, "Hello - I am in the time pane");
>				pTTT->hinst = NULL;
>				return TRUE;
>			}
>		}
>        	}
>    }
>    return FALSE;
>}
>
>If anyone has done this successfully before I'd appreciate any tips.
>
>Thanks in advance,
>Roger
>
>
>
>
-----From: drt@ebt.com (Randy Taylor)

Environment : VC++ 4.0, Win 95

This occurs when you have the tooltip style
#define TTF_CENTERTIP           0x02
in effect for your tooltip.
If it's on, turn it off in your CMainFrame::OnToolTipNotify function like this:

	_AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
	CToolTipCtrl* pToolTip = pThreadState->m_pToolTip;
        pToolTip->ModifyStyle(TTF_CENTERTIP,0);

Below is more information for you:
Your wrote:

>Here's what I've got:
>
>In my MDI app CMainFrame I've added the following to my message map:
>	ON_NOTIFY_EX_RANGE(TTN_NEEDTEXT, 0, 0xFFFF, OnToolTipNotify).
>
>In my CMainFrame::OnCreate() I've got this:
>	EnableToolTips(TRUE);
>
>I've got a CMainFrame::OnToolTipNotify that looks like this:
>BOOL CMainFrame::OnToolTipNotify( UINT, NMHDR * pNMHDR, LRESULT *) {
>	TOOLTIPTEXT *pTTT = (TOOLTIPTEXT *)pNMHDR;
>    	UINT nID =pNMHDR->idFrom;
>    	if (pTTT->uFlags & TTF_IDISHWND){
>        	UINT nID2 = ::GetDlgCtrlID((HWND)nID);
>        	if(nID2){
>		HWND hwnd = (HWND)m_wndStatusBar.GetSafeHwnd();
>		// Is the tooltip notification for the statusbar?
>		if(hwnd == (HWND) nID){
>			// Get the cursor position
>			POINT point;
>			GetCursorPos(&point);
>			// Determine whether cursor is in the time pane
>			CRect rect;
>		
>m_wndStatusBar.GetItemRect(m_wndStatusBar.CommandToIndex(ID_INDICATOR_TIME),
>&rect);

Is the value returned by your call to CommandToIndex what you expect?
You may wish to check it.

>			ClientToScreen(&rect);
>			if(rect.left <= point.x && rect.right >= point.x){

Use the CRect::PtInRect function here. It's better.

>				strcpy(pTTT->szText, "Hello - I am in the time pane");
>				pTTT->hinst = NULL;
>				return TRUE;
>			}
>		}
>        	}
>    }
>    return FALSE;
>}
>
>If anyone has done this successfully before I'd appreciate any tips.
>
>Thanks in advance,
>Roger
>
>
>
>

---

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