Derived class from CStatic and dialogs
I have a class derived from CStatic and am trying to get it to display in a
dialog-based app. The class works fine as I have tested it a window-based
app and everything works fine. In the dialog-based app however, the call
to Create() crashes the app.
I have thus fallen back to trying to get a CStatic instance onto the dialog
instead, with the same results. The code I'm using to create the object is
the following:
pStatic->Create("", WS_VISIBLE|WS_CHILD, rect, this, IDC_MYSTATIC);
Where pStatic is declared as a class member in the header file and rect is
an instance of CRect. IDC_MYSTATIC is also correctly defined. This call
is made from the constructor of the dialog class.
Anyon any idea what I'm doing wrong?
--
"That's right," he said. "We're philosophers. We think, therefore we am."
(Small Gods)
james3235
vc.mfc
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"James Telfer" <james@jamesandsian.wanadoo.co.uk> wrote in message
news:cudjo5$bls$1@newsg3.svr.pol.co.uk...
> I have a class derived from CStatic and am trying to get it to display in
a
> dialog-based app. The class works fine as I have tested it a window-based
> app and everything works fine. In the dialog-based app however, the call
> to Create() crashes the app.
>
> I have thus fallen back to trying to get a CStatic instance onto the
dialog
> instead, with the same results. The code I'm using to create the object
is
> the following:
>
> pStatic->Create("", WS_VISIBLE|WS_CHILD, rect, this, IDC_MYSTATIC);
>
> Where pStatic is declared as a class member in the header file and rect is
> an instance of CRect. IDC_MYSTATIC is also correctly defined. This call
> is made from the constructor of the dialog class.
>
> Anyon any idea what I'm doing wrong?
I suspect it requires a valid HWND from the parent, and this seems unlikely
in the dialog's ctor. Try doing it from OnInitDialog instead, or consider
using a control member variable mapped to a static on your dialog template.
--
Jeff Partch
jeffp- Dont call this in constructor of dialog. The dialog window is not yet
created. Do it in OnInitDialog.
- You could simply use a CStatic in resource editor and place it in
your dialog. And then replace the CStatic in your dialog's header file
with your own clss name.
---------
Ajay Kalra
ajaykalra@yahoo.com
James Telfer wrote:
> I have a class derived from CStatic and am trying to get it to
display in a
> dialog-based app. The class works fine as I have tested it a
window-based
> app and everything works fine. In the dialog-based app however, the
call
> to Create() crashes the app.
>
> I have thus fallen back to trying to get a CStatic instance onto the
dialog
> instead, with the same results. The code I'm using to create the
object is
> the following:
>
> pStatic->Create("", WS_VISIBLE|WS_CHILD, rect, this, IDC_MYSTATIC);
>
> Where pStatic is declared as a class member in the header file and
rect is
> an instance of CRect. IDC_MYSTATIC is also correctly defined. This
call
> is made from the constructor of the dialog class.
>
> Anyon any idea what I'm doing wrong?
> --
> "That's right," he said. "We're philosophers. We think, therefore we
am."
> (Small Gods)
ajaykalraThere should be no problem; generally there is no need to do an explicit Create for a
static control; just create a control variable of the correct class. Note that your code
does not show
CMyStatic * pStatic = new CMyStatic;
which is essential to make the code work. But there is no reason to declare it as a
CMyStatic * or use new; just declare
CMyStatic myStatic;
and you are done.
joe
On Wed, 09 Feb 2005 18:11:25 +0000, James Telfer <james@jamesandsian.wanadoo.co.uk> wrote:
>I have a class derived from CStatic and am trying to get it to display in a
>dialog-based app. The class works fine as I have tested it a window-based
>app and everything works fine. In the dialog-based app however, the call
>to Create() crashes the app.
>
>I have thus fallen back to trying to get a CStatic instance onto the dialog
>instead, with the same results. The code I'm using to create the object is
>the following:
>
>pStatic->Create("", WS_VISIBLE|WS_CHILD, rect, this, IDC_MYSTATIC);
>
>Where pStatic is declared as a class member in the header file and rect is
>an instance of CRect. IDC_MYSTATIC is also correctly defined. This call
>is made from the constructor of the dialog class.
>
>Anyon any idea what I'm doing wrong?
Joseph M. Newcomer [MVP]
email: newcomer@flounder.com
Web: http://www.flounder.com
MVP Tips: http://www.flounder.com/mvp_tips.htm
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Hi, Hi, I am developing a dialog based application and Im still facing an old problem :( "cmdtarg line 52". The problem is the value of the reference counter. I have 4 dialog (CDialogA, CDialogB, CDialogC, CDialogD) and 3 class derived from CWnd (CWnd1, CWnd2, CWnd3). The "main" dialog is A, from this I run (domodal) B and from this C. Dialog D can be opened from every dialog. The variables (all private) are For class CDialogA CDialogB m_BDlg; CDialogD m_DDlg; CWind1 m_ctlWnd1; CWind2 m_ctlWnd2; For class CDialogB CDialogC m_CDlg CDialogD m_DDlg; CWnd3 m_ctlWnd3 ...
Deriving from CString...?
Hi all, I writing a class that derives from CString and adds a few more pieces of frequently required functionality; e.g. a constructor that accepts an int a formats the CString appropriately, a Split() function that returns a CStringArray of tokens based on a separator etc. Of course, the main requirement for my class is that it can be used anywhere a CString can be used. Problem is that I've run into a situation where it doesn't. e.g. CString str1(_T("CString")); CMyString str2(_T("CMyString")); TRACE(_T("%s; %s\n"), str1, str2); produces the follow...
How to get a OPEN/SAVE dialog option window when open Excel from IE browser
I use the following to open Excel from IE browser, but I don't get a OPEN/SAVE dialog option window. Instead, the Excel opened in the browser window. How to get a OPEN/SAVE dialog option window? THanks. filesys.createTextFile(application("ApplicationPath") & "repository\repository_" & filenameval & ".csv",true) ...
CStatic control image repaint problem
I have an image loaded in a CStatic control. Once I load the image and change my focus to some other application and then change my focus back to the application having the CStatic control, I notice the image is no more seen. Please let me know how to resolve this problem. Thank you. Rajesh Do you draw the image in the OnPaint handler, or use an SS_BITMAP style-static and do a SetBitmap (this causes the built-in OnPaint handler to paint the image). Any other solution will not work. joe On 26 May 2004 14:04:03 -0700, rajesh79@hotmail.com (Rajesh) wrote: >I have an image loaded in a C...
Calling two dialogs in InitInstance
Hello! I have a dialog based application. In the application InitInstance I have a code like: // This part works!! CguiDlg dlg; m_pMainWnd = &dlg; INT_PTR nResponse = dlg.DoModal(); // This part doesn't CguiDlg dlg2; m_pMainWnd = &dlg2; nResponse = dlg2.DoModal(); Any idea why the second call with a second dialog fails? Thanks! When you call "DoModal" you do not return until the dialog closes. Using your code I expect the first dialog to open. Then when you close the first dialog the second dialog will open. If you want both to open at the...
Redux: Wrong dialog displayed using derived classes
First of all, thanks for the help you all have given so far. But it's still not working. My problem: Because I have so many related dialogs, each with lots of code processing the input, I've made a hierarchy of dialog classes derived from CDialog. Each derived dialog has its own unique dialog resource. It took some doing to get it all to link, so it's certain I derived my classes wrong. When I activate a derived dialog at run time, the base class's dialog is displayed instead of that of the derived one. Why, and how to fix it? Thanks very much!! Rick Here is the class hie...