CToolBar usage

I am trying to use CToolBar object.

1) I am using the following set of commands to display it, but it doesnt show up on the window.

CToolBar toolBar;

if (!toolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_BOTTOM
| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
!toolBar.LoadToolBar(IDS_SCALE))
{
TRACE0("Failed to create toolbar\n");
}

toolBar.LoadBitmap("IDB_VERTICAL_GRAPH_SCALE");
toolBar.SetButtons(NULL,1);

This is to have a minimal tool bar thingy working. But it doesnt even show up. What am I missing? Whatever method this is in, I am calling it on OnPaint().


2) I am using (once I get it working) "CBRS_BOTTOM" this to display the tool bar at the bottom. I want it on (vertical) left too. How do I manage that?

This is creating a tool bar object and not through class wizard. That's why I am probably confused.

Problems with this approach:

1. OnPaint is a wrong place for creating/displaying any control. It is a paint handler as the name specifies and it is a handler which has to be used only for that purpose. Note that it is called several times and whenever windows needs to paint any part of the window due to uncovering, moving or whatsoever. There is no gaurantee that it will be called in a particular order.

2. So, first off , you need it to move it from OnPaint handler to someother place. The best place would be some handler related to Creation or initialization. I'm not sure what kind of project u r using. Is it a dialog, or is it a SDi/MDI app ? If it is an SDI / MDI app, you could create a sample app with all defaults and will be able to see the toolbar creation in OnCreate method of mainframe.

Note: Since you are using CToolBar toolbar on the stack in OnPaint handler, when the OnPaint handler exits, the CToolbar object is destroyed ( in turn calling DestroyWindow on the toolbar window ). That is the reason why it doesn't show because by the time it is created, it is destroyed too. So, since you want it to be persistent, you have to make it a member of a window which will have this toolbar as child window.

But I created a CMenu object in a method which is called by OnPaint(), and that works. As in it at least shows up.

And I put the same code in OnInitDialog(), but the problem still persists. It doesnt show up at all.

It may work. But it is not a good place.

So , from what you say, I understand that you are trying to create a toolbar for a dialog, right ?

Right.

But I still have not been able to do it. Is it just about being in the wrong place. Coz it is not showing the tool bar at all.

check this out. There are more toolbar articles on CG

http://www.codeguru.com/Cpp/controls...cle.php/c2545/

I did that. It shows the tool bar as it is in OnInitDialog(). But it doesnt repaint it. So if the window is repainted, its not possible to get the tool bar back.

To avoid this I tried to put it in OnPaint(), where it hangs on execution.

Did you add a member variable to your dialog class for the toolbar ?
or probably post just the code for your OnInitDialog()

If I had not added the member variable, then it would not seem like an OnPaint() issue. It wouldnt compile at all. Right? So I dont think its that. But it could be that I am not adding something else that I am supposed to, no idea what though. Thats my problem.

Post the code for creating that from OnInitDialog(). Maybe I can paste it to a sample app and see.

1) So this goes in the header file:

CToolBar cToolBar;

2) This goes in OnInitDialog():

BOOL CSpectPlotsDlg::OnInitDialog()
{
CDialog::OnInitDialog();

cToolBar.Create(this);
cToolBar.LoadToolBar(IDS_SCALE);
cToolBar.ShowWindow(SW_SHOW);
cToolBar.SetBarStyle(CBRS_ALIGN_BOTTOM | CBRS_TOOLTIPS | CBRS_FLYBY);
RepositionBars(AFX_IDW_CONTROLBAR_FIRST, AFX_IDW_CONTROLBAR_LAST, 0);

return TRUE;
}


3) And this is another funciton as per that link:

BOOL CSpectPlotsDlg::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;

#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_BOTTOM, 0, 0, 0, 0,SWP_NOACTIVATE|
SWP_NOSIZE|SWP_NOMOVE|SWP_NOOWNERZORDER); return TRUE;
}
}


This seems to have issues though.

And this is all I have which shows a gray tool bar sorta thingy at the bottom of the wondow. But on repaint it disappears.

Another thing:

There is something called:

AfxLoadString(nID, szFullText);

in the method. But it is undeclared identifier error with that. It has no help on MSDN too. What it that?

This is what I did:
1. Created a sample MFC app of dialog based type
2. Added a toolbar resource with ID set to IDS_SCALE
3. Added CToolbar cToolBar object to the dialog .h file
4. Added the code for OnInitDialog that you have pasted and everything seems to be fine. I don't have any problems whatsoever with painting.

Note: I did not do that tooltip stuff simply becuase I think you don't need it, right ?

Try the above steps yourself and see if there is a problem.

I am working in someone else's application, which is JUST HUGE. I can't figure out what sort of application it is. But the file I am working in is a dialog file.

Is that sufficient info for me to develop on it?

So I cant do this:
1. Created a sample MFC app of dialog based type

So I dont really know wat you mean by this:
2. Added a toolbar resource with ID set to IDS_SCALE

But I have added IDS_SCALE in string discardable in the resource file.

I have done the following:
3. Added CToolbar cToolBar object to the dialog .h file
4. Added the code for OnInitDialog that you have pasted and everything seems to be fine. I don't have any problems whatsoever with painting.


So as far as #2 is concerned, what xactly do I have to add in the resouce file, keeping in minf I am not using classwizard?

Quote:

---

Originally posted by tarangkaushal
So I dont really know wat you mean by this:
2. Added a toolbar resource with ID set to IDS_SCALE

---

I guess that is the problem then. Probably the toolbar is not even initialized because you are passing a string resource when it expects a toolbar resource.

So, step 1 is to create this.
1. Go to resource view in your project
2. On toolbar resources, right click and select Insert...
3. Select toolbar from the options & click New
4. You will be presented with a box for drawing the toolbar button. Draw a sample button. Once you are done drawing, another button is added if you look at the top pane. Select that and draw another button. So, for a test, that is enough. You have a toolbar with 2 buttons.
5. Note the ID for this in the toolbar resources..( default IDR_TOOLBARn )
6. In your OnInitDialog replace IDS_SCALE with this ID.

Now test and see what happens.

6.

Hey Thnx Kiran!!! That works perfect.

Coupla more qns plz.

1) How can I draw a vertical tool bar. Coz CToolBar does not seem to have a method like EnableDocking where I can specify "ALIGN_LEFT" sort of a thing. So how do I do that.

2) Is it possible to have a tool bar without buttons. What I want it a scale like appearance there. Or a button with no boundaries sorta thing. And I can change the bitmap of that button/somethingelse manually.

3) Is it possible to create a menu alligned at the bottom and left.

What I want to do with either (toolbar/menu) is have scales on it, which I thought could be a bitmap in case of toolbar which would be more convenient.

Quote:

---

Originally posted by tarangkaushal
1) How can I draw a vertical tool bar. Coz CToolBar does not seem to have a method like EnableDocking where I can specify "ALIGN_LEFT" sort of a thing. So how do I do that.

---

Check SetBarStyle. There is a CBRS_ALIGN option you can use.

Quote:

---

2) Is it possible to have a tool bar without buttons. What I want it a scale like appearance there. Or a button with no boundaries sorta thing. And I can change the bitmap of that button/somethingelse manually.

---

Hm.. it sounds like a status bar than a toolbar now . You mean, you don't want it to be used a button at all ? No mouse click processing etc.

Quote:

---

3) Is it possible to create a menu alligned at the bottom and left.

---

Not clear. Probably a graphic of what it looks like would help

Actually what I want it scales one horizonatal at the bottom and the other vertical on the left. Which does not contain buttons but has scales on it, like a graph, which has x-y axis containing the scales along those axis.

I started with menu. But I thought it is not possible to have a menu bar at the bottom or alligned on the left boundary of the window (like a quadrant of a plot).

So I switched to tool bar. Which works perfect the way told earlier. But now instead of buttons I want the scales there (if I am able to xplain that properly - like scales on an actual rular and like the ones on x-y axis). Is that doable.

Now you also mentioned, that this sounds like a status bar. Is it possible to have 2 status ar for same window - one alligned at the bottom and other on the left boundary of the window as I mentioned earlier? And is it possible to draw scales on it?

Its kinda complicated right?

Not sure exactly if this fits your needs. But I found an article on rulers here on CG

How do I put an image on the button of a tool bar - I want 2 images - 1 for each zoom in and zoom out.

Do I have standard bmps available which I can just attach to these buttons?

And how?

And how do I capture click event of the button? I mean do we have something similar to:

void CMainFrame::OnButton()
{
}
and,
void CMainFrame::OnUpdateButton(CCmdUI* pCmdUI)
{
}

some example will be helpful.

Thanks.

Quote:

---

Originally posted by tarangkaushal
Do I have standard bmps available which I can just attach to these buttons?

---

No. There aren't any std buttons. But creating one is not a problem. You can easily do it in paint or any graphical editing s/w

Quote:

---

And how do I capture click event of the button? I mean do we have something similar to:
void CMainFrame::OnButton()
{
}
and,
void CMainFrame::OnUpdateButton(CCmdUI* pCmdUI)
{
}

---

Yes. First, you need to associate the toolbar button with an command ID. Then you need to add a ON_COMMAND handler to handle this ID. If you want to change the state of the button, for example like a toggle one, or to enable /disable you need to handle ON_UPDATE_COMMAND_UI.

Refer to MSDN, there should be plenty of examples. Or any beginner level MFC book will deal with these.