VC++ Sending data from a structure in one class to a ListBox in a second class.

Burlock · 11-22-2003, 10:13 PM

Hello everyone, I'm building a simple RPG type game and have run into a snag with my inventory. The program is a Dialog based application, the problem I've run into is I've created a seperate class to contain all my item handling code and a listbox on the main dialog to display the names of the items. I'm trying to set the items in the listbox by using:

Code:

m_lbInventory.AddString(CItems::PopulateShop(*holder));

and the function code is:

Code:

void CItems::PopulateShop(CString* holder)
{
	*holder = ShopList.m_sName;		
}

The error I receive is:
error C2664: 'PopulateShop' : cannot convert parameter 1 from 'const char' to 'class CString *'
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast

In that particular case I tried to use pointers in order to get the data, I am not very good with pointers yet and likely did not use them properly. Am I heading in the right direction with the pointers? Or should I be attempting to do this in a completely different way?

Codeplug · 11-23-2003, 08:51 AM

Study this and read tutorial

Code:

#include <iostream>
#include <string>
using namespace std;

void set_string(string &ref_string)
{
    ref_string = "setting reference parameter";
}//set_string

void set_string(string *ptr_string)
{
    *ptr_string = "setting pointer parameter";
}//set_string

int main()
{
    string s1, s2;
    set_string(s1);
    set_string(&s2);

    cout << "s1 = " << s1 << endl;
    cout << "s2 = " << s2 << endl;

    return 1;
}//main

Tutorial on pointers

gg

11-22-2003, 10:13 PM	#1
Burlock Registered User Join Date: Nov 2003 Posts: 6	VC++ Sending data from a structure in one class to a ListBox in a second class. Hello everyone, I'm building a simple RPG type game and have run into a snag with my inventory. The program is a Dialog based application, the problem I've run into is I've created a seperate class to contain all my item handling code and a listbox on the main dialog to display the names of the items. I'm trying to set the items in the listbox by using: Code: m_lbInventory.AddString(CItems::PopulateShop(holder)); and the function code is: Code: void CItems::PopulateShop(CString holder) { holder = ShopList.m_sName; } The error I receive is: error C2664: 'PopulateShop' : cannot convert parameter 1 from 'const char' to 'class CString ' Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast In that particular case I tried to use pointers in order to get the data, I am not very good with pointers yet and likely did not use them properly. Am I heading in the right direction with the pointers? Or should I be attempting to do this in a completely different way?
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