Dynamic ComboBoxes and Variables (specifically Control & Value)

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I have been playing with different controls trying to learn how they operate. Any comments and/or suggestions will be greatly appreciated. Thanks

If I create a combobox like:

MIDL

CComboBox *CaliberBox = new CComboBox;
       CaliberBox->Create(WS_CHILD | WS_VISIBLE |
       WS_VSCROLL | CBS_DROPDOWNLIST | CBS_SORT,
       CRect(20, 85, 130, 30), this, 0x1448);

       CaliberBox->AddString(L".223 Rem");
       CaliberBox->AddString(L".308 Win");
       CaliberBox->AddString(L".45/70 Gov't");

How do I link a 'control' variable and a 'value' variable?

I know I need to add the following to the DoDataExchange, but what do I need to add as the IDC ?

DDX_Control(pDX, ??????, m_wndCaliber);
DDX_CBString(pDX, ??????, m_sCaliber);

and when using the 'new' operator, I don't think I need to 'delete' the CaliberBox if it's created in a dialog window. Am I correct?

PS (What exactly, is '0x1448' in the create initializer?) I got this from some example I found somewhere online.

Thanks again
-DrB

Posted 12-Jul-11 13:53pm

DrBones69

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Solution 2

I never used DDX_Control before but i guess, it has something to do with it if this error occurs after adding those.

Make sure they are not causing

CaliberBox->AddString(L".223 Rem");
     CaliberBox->AddString(L".308 Win");
     CaliberBox->AddString(L".45/70 Gov't");

Posted 12-Jul-11 16:49pm

Mohibur Rashid

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Mohibur Rashid · Accepted Answer · 2011-07-12T15:12:00

i believe you should read this link[^]

in your creation you would have to assign an control id. in your case you have used 0x1448,

Better define a macro something like this

#define IDC_CALIBERBOX 0x1448

then in Create use IDC_CALIBERBOX instead the actual number(reason to do this to avoid some issue of change. say if you need to change only place you will have to change is in the macro definition)

and in your