Re: How to sett Radio buttons?

"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>
Sun, 6 Jul 2008 23:19:20 -0400
The way that MFC radio buttons work is that you have one integer variable
for each group. You set the variable to 0 or 1 to control the group state.
Call UpdateData(FALSE) to set the buttons, UpdateData(TRUE) to set the
integer variables from the buttons.

"Landon" <> wrote in message

I use MFC Visual C++ 4.2.

My application has a Main window and a child window.

In the main window there is a CListCtrl containing data. If user
double-clicks one of the record, the details of the data will be shown on
child form.

There are 2 fields using Radio buttons.

So they are:
Is customized: <RAD1> Yes <RAD2> No
Use Manual documents: <RAD3> Yes <RAD4> No

So when the user look at the detail form, it must be same with the data on
the CListCtrl. The difference is only on the indicator. If user look on
CListCtrl, it just displayed "Yes" or "No". But if they open the details,
either Yes or No radio button will be selected.

I have tried to declare it on the h file:
int m_rad1;
int m_rad2;
int m_rad3;
int m_rad4;

on the DDX part:
DDX_Radio( pDX, IDC_RAD1, m_rad1 );
DDX_Radio( pDX, IDC_RAD2, m_rad2 );
DDX_Radio( pDX, IDC_RAD3, m_rad3 );
DDX_Radio( pDX, IDC_RAD4, m_rad4 );

then on the dialog constructor part:
m_rad1 = 1;
m_rad2 = 1;
m_rad3 = 1;
m_rad4 = 1;

then on the dialog initialization part:
if( bCustomized )
 m_rad1 = 1;
 m_rad2 = 1;

if( bManualDocExist )
 m_rad3 = 1;
 m_rad4 = 1;

But what I've got is a runtime error every time I test by double click on
the CListCtrl item:
Debug Assertion Failed!

and when I trace using Alt + 7, the error is on the DDX_Radio function at
the GetWindowLong() part.

What was wrong?

How to solve this and sets the Radio button equal to the original data?

Thank you very much.

Scott McPhillips [VC++ MVP]

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