Help with ListBox..

Mif (403)
Why do I get this error?

||=== Build: Debug in ListBox (compiler: GNU GCC Compiler) ===|
In function 'HWND__* InitListBox(HWND)':|
|31|error: 'ARRAYSIZE' was not declared in this scope|
||=== Build failed: 1 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|
||=== Run: Debug in ListBox (compiler: GNU GCC Compiler) ===|

Do I have to include some other headers.. ?

The MSDN used ARRASIZE in code.. but for me doesn't work. Any idea?

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/** List Box **/
#define _win32_IE 0x300

#include <windows.h>
#include <commctrl.h>
#include <string>


#define MAX_LIST        20
#define IDC_LISTBOX     1

typedef struct tagMOBS
{
    WCHAR szMonsters[MAX_LIST];
} MOBS;

MOBS argMobs[] =
{
    {L"Andariel"},{L"Duriel"},{L"Mephisto"},{L"Diablo"},{L"Baal"},
    {L"Izual"},{L"Contess"},{L"The Summoner"},{L"Nihlathak"},{L"Bartuc the Bloody"}
};

HINSTANCE hInst;
HWND InitListBox(HWND hwnd)
{
    HWND hListBox;

    hListBox = CreateWindowW(L"LISTBOX", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | WS_VSCROLL,
                15, 15, 200, 250, hwnd, (HMENU)IDC_LISTBOX, hInst, NULL);

    for(int i = 0; i < ARRAYSIZE(argMobs); i++)
    {
        int pos = (int)SendMessage(hListBox, LB_ADDSTRING, 0, (LPARAM)argMobs[i].szMonsters);

        SendMessage(hListBox, LB_SETITEMDATA, pos, (LPARAM)i);
    }
    SetFocus(hListBox);
    return (hListBox);
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
{
    switch(msg)
    {
    case WM_CREATE:
        {
            InitListBox(hwnd);
            break;
        }
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProcW(hwnd, msg, wp, lp);
    }
    return 0;
}

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPevInst, LPSTR args, int nCmdShow)
{

    InitCommonControls();
    HWND hwnd;
    WNDCLASSW wc = {0};

    wc.cbClsExtra    = 0;
    wc.cbWndExtra    = 0;
    wc.hbrBackground = (HBRUSH)COLOR_WINDOW;
    wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    wc.hInstance     = hInst;
    wc.lpfnWndProc   = WndProc;
    wc.lpszClassName = L"myWindowClass";
    wc.lpszMenuName  = NULL;
    wc.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;

    if(!RegisterClassW(&wc))
        return -1;

    hwnd = CreateWindowW(L"myWindowClass", L"List Box", WS_OVERLAPPEDWINDOW,
                        350, 130, 700, 500, NULL, NULL, NULL, NULL);

    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);

    MSG msg = {0};

    while(GetMessage(&msg, NULL, 0, 0) > 0)
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return 0;
}
Last edited on
coder777 (8450)
The MSDN code does not always compile. You can easily create that macro yourself:

#define ARRAYSIZE(arr) (sizeof(arr) / sizeof(*arr))
Mif (403)
ohh ok thank you..
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