How to call a function in mfc...?

Question

I am new to MFC PROGRAMMING. I use vs 2008, in a Dialog Based App. I want to call bellow function on a button click event...? When I call like SortList(listboxone); is giving an error that SortList not found...! Please help me..!!

void SortList(CListBox& templistbox)
{   
    DWORD_PTR abc;
    int a=templistbox.GetCurSel();// Select current  Item Index    
    if(a<templistbox.GetCount()-1)
    {
        abc = (DWORD_PTR )templistbox.GetItemData(a);
        a++;
        templistbox.SetItemData(a,(DWORD_PTR) templistbox.GetItemData(templistbox.GetCurSel()));
    }
}

Sorry now I changed the function to as above but still gives same error.

Where are you calling the function? Is the function in the same file? — Mohammad Dehghan, Mar 20 '13 at 07:20
If you really are calling SortList(listboxone) then there is no such function. The source code above shows a function that requires two int's and a CListBox as arguments. — Roger Rowland, Mar 20 '13 at 07:28
Dear-@roger_rowland I have editted the code as above. Removed the function arguments but still the same error is prompted, I saved the project rebuilded but not succeeded. — Dharma Cool, Mar 20 '13 at 07:36

Mohammad Dehghan · Answer 1 · 2013-03-20T17:29:06.067

2

You probably are calling the function above the function definition. In C/C++, you need to define the function (or it's prototype at least) before calling the function. Put this:

void SortList(CListBox& templistbox);

at the the top of the source file.

edited Mar 20 '13 at 17:29

answered Mar 20 '13 at 07:49

Mohammad Dehghan

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Well, not entirely true. You can declare *or* define the function, before using it. You can even do both, if you want, but you must do at least one of those two. – Nik Bougalis Mar 20 '13 at 17:02

How to call a function in mfc...?

1 Answers1