Dynamic toolbars
Lars Martinsson -- lmn@agema.se
Thursday, July 04, 1996
Env: VC4.1, NT3.51
I'm developing an application where the user dynamically add/remove
buttons from a toolbar. The toolbar buttons represents controls and
insertable objects read from the registry.
There is no problems with the controls, I read the ToolboxBitmap32 key
and extract a bitmap handle which a then add as a toolbar button.
My problem is the insertable objects, they have a DefaultIcon key.
I use the ExtractIcon API to get a HICON and then I'm stucked.
I also have problems with the tooltips for the toolbar. I've tried to
receive TTN_NEEDTEXT without any success.
Is there any knowledge out there how do to this I would be the happiest
MFC programmer in the nortern suburbs of Stockholm ;-)
Lars Martinsson
lmn@agema.se
lars.martinsson@lamar.se
Vincent Mascart -- 100425.1337@compuserve.com
Saturday, July 06, 1996
>From: "Lars Martinsson"
>Sent: samedi 6 juillet 1996 5:02
>To: INTERNET:MFC-L@NETCOM.COM
>Subject: Dynamic toolbars
>
>Env: VC4.1, NT3.51
>
>I'm developing an application where the user dynamically add/remove
>buttons from a toolbar.
>
>[snip]
>
>I also have problems with the tooltips for the toolbar. I've tried to
>receive TTN_NEEDTEXT without any success.
>
>Is there any knowledge out there how do to this I would be the happiest
>MFC programmer in the nortern suburbs of Stockholm ;-)
>
>Lars Martinsson
>lmn@agema.se
>lars.martinsson@lamar.se
If you want to provide tool tips under NT, you'll have to add a handler for
TTN_NEEDTEXTW and TTN_NEEDTEXTA.
Vincent Mascart
100425.1337@compuserve.com
Dan Kirby -- dkirby@accessone.com
Friday, July 05, 1996
[Mini-digest: 2 responses]
>>>I also have problems with the tooltips for the toolbar. I've tried to
receive TTN_NEEDTEXT without any success.<<<
TTN_NEEDTEXT is handled automatically by CFrameWnd. Look in WINFRM.CPP and
you will see the CFrameWnd::OnToolTipText handler. So since your toolbar
is a most likely a child of a CFrameWnd, you can use the built-in tooltip
handling. In the handler, you can see that it loads the tooltip text from a
string resource:
AfxLoadString(nID, szFullText);
// this is the command id, not the button index
AfxExtractSubString(strTipText, szFullText, 1, '\n');
For cases where your not using the default handling of tooltips, you might
want to look at Q140595 in the Microsoft Knowledgebase which talks about
enabling tooltips for any child window.
--dan
-----From: "Manos D. Anastasiadis"
In Answer to Lars Martinsson[SMTP:lmn@agema.se]
---------------------------------------------------------
(Env: VC4.1, NT3.51)
Although your description of the problem with ExtractIcon does not
contain enough info :-), I hope that the code snippet found below
will give you a little help. It is a piece of code used by a Dialog box
that splashes when the app is started, allowing the user to
select a file from a ListView based implementation of the MRU file list,
or to open/create another document; similar to the typical stuff found
in many apps nowadays (I hate it personally). If anybody's interested
in getting the full source, just drop me a line...
As long as the tooltips are concerned, you can have a look at the
common controls sample in \MSDEV\SAMPLES\MFC\GENERAL\CMNCTRLS
which works quite fine (and you get a demo of all the common controls as a plus).
//
// GetTemplateIcon()
// Used to extract the icon associated with a specific CDocTemplate
// of the ones "we" use in our application
//
static HICON msGetTemplateIcon(CDocTemplate* pTemplate)
{
CString strFileTypeId;
if (!pTemplate->GetDocString(strFileTypeId, CDocTemplate::regFileTypeId)
|| strFileTypeId.IsEmpty())
return NULL;
// Find the document template's icon container executable
CString strDefaultIcon;
static const TCHAR szDefaultIconFmt[] = _T("%s\\DefaultIcon");
strDefaultIcon.Format(szDefaultIconFmt, strFileTypeId);
TCHAR szDefaultIconValue[_MAX_PATH];
LONG lcbValue = sizeof(szDefaultIconValue);
if (::RegQueryValue(HKEY_CLASSES_ROOT, strDefaultIcon,
szDefaultIconValue, &lcbValue)
!= ERROR_SUCCESS)
return NULL;
UINT nIconIndex = 0;
LPTSTR lpszTerminator = _tcschr(szDefaultIconValue, _T(','));
if (lpszTerminator != NULL)
{
*lpszTerminator++ = _T('\0');
nIconIndex = (UINT) (*lpszTerminator - _T('0'));
}
return ::ExtractIcon(AfxGetInstanceHandle(),
szDefaultIconValue, nIconIndex);
}
/*==================================*
* Manos D. Anastasiadis *
* Computer Engineering Dept. *
* Technical University of Crete *
* Mu.S.I.C. *
* manos@ced.tuc.gr *
* Chania-Salonica-Kwnstantinoypolh *
*==================================*/
Kevin Bentley -- kevinb@globaltrav.com
Thursday, December 05, 1996
Environment: Windows 95, MSVC 4.0
I have an application in which I would really like to be able to add a
dynamic toolbar. Ideally, I would like the user to be able to drag an
icon from explorer, and have *that* icon be added to the toolbar. I would
like the toolbar to be dockable too. Then I would have a configuration
option, that would configure exactly what happens when you click on that
button.
I thought about using a CDialogBar, and resizing it depending on how many
icons I had to draw. I would have to do quite a bit manually, but I think
that would work.
The problems I am having are:
1) How can I implement drag & drop in a Toolbar, or Dialogbar?
2) How can I dynamically add buttons, and how do I get notified when they
are clicked? I haven't been able to find any examples of this.
Thanks for your help,
Kevin
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