How can i use list box as a datastructure?

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Hi all

I am working on old code and int this code class is derived from CDialog and CListbox object is initialized in the DoDataExchange. Now i want to remove the window and make this list box a plane data structure, without initializing with DoDataExchange.

Question 1: how can i do it??
Question 2: how can i initialize list box without using Dodataexchage ??

I want to remove the inheritance from the Cdialog. This class earlier used to output the data in a dialog now i want to save the data in other format(not dialog based). So i want to remove the dialog and use the same data structure. Currently controls are initialized in DoDataExchange but now i don't want to use it and use the same list box as my data structure.

Looking for the early reply.

Thanks.

Posted 22-Sep-11 2:01am

Member 7704531

Updated 22-Sep-11 2:37am

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Philippe Mori 22-Sep-11 17:50pm

Seriously, don't do this. Rewrite the code properly not using a CListBox.

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Maximilien · Answer 1 · 2011-09-22T02:37:00

The question is confused.

I think you are mixing up a lot of different concepts.

CDialog is a UI dialog that will display a UI CListBox.
The CListBox will be initialized with data.
People usually fill up the listbox in the OnInitDialog.

The data can come from a lot of different places. it can be done in the resource edit, it can be "hard-coded", it can come from a file or database, or it can come from whatever called the dialog class (by setting a data member and filling up the list in OnInitDialog).

The listbox is not a datastructure in the strict sense of the word, it (mostly) only contains a list of strings.

I suggest check what holds the actual data that will be use to fill the listbox.

That might give you a good start.

Other than that, I'm sorry I'm not certain I understand the question.

CPallini · Answer 2 · 2011-09-22T02:21:00

Solution 1

Do you mean: "I want to put my own data in listbox items"?
You can do that via ListBox_SetItemData[^], ListBox_GetItemData[^].

Posted 22-Sep-11 2:21am

CPallini

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Member 7704531 22-Sep-11 8:25am

No, this class earlier used to output the data in a dialog now i want to save the data in other format(not dialog based). So i want to remove the dialog and use the same data structure. Currently controls are initialized in DoDataExchange but now i don't want to use it and use the same list box as my data structure.

Richard MacCutchan · Answer 3 · 2011-09-22T03:04:00

Solution 3

Jusr create a CListBox object in your program and use its methods[^] to initialise and manipulate entries.

Posted 22-Sep-11 3:04am

Richard MacCutchan

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Member 7704531 22-Sep-11 9:17am

I have created objects in .h file but as soon as i perform any operation on it, i get an error as the objects shows null memory. I am using VC6

Richard MacCutchan 22-Sep-11 10:06am

What do you mean "I have created objects in .h file"? This is not how to create objects in C++. You need to create the objects in your code.

How can i use list box as a datastructure?

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