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Error in C++ Program that I just can't figure out

 
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p3
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Joined: 17 Jun 2005
Posts: 615
PostPosted: Sun Feb 19, 2006 7:21 pm    Post subject: Error in C++ Program that I just can't figure out Reply with quote
Whenever trying to compile this, I get an error that IDD_ABOUT is undefined. Can anyone figure out why? Here's the code from all of the files:

main.cpp:
Code:

#include <windows.h>
#include "resources.h"

const char g_szClassName[] = "myWindowClass";
BOOL CALLBACK AboutDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
    switch(Message)
    {
        case WM_INITDIALOG:

        return TRUE;
        case WM_COMMAND:
            switch(LOWORD(wParam))
            {
                case IDOK:
                    EndDialog(hwnd, IDOK);
                break;
                case IDCANCEL:
                    EndDialog(hwnd, IDCANCEL);
                break;
            }
        break;
        default:
            return FALSE;
    }
    return TRUE;
}
// Step 4: the Window Procedure
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch(msg)
    {
      // BEGIN NEW CODE
        {
         case WM_LBUTTONDOWN:
            {
               DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_ABOUT), hwnd, AboutDlgProc);
            }
        }

      // END NEW CODE
        case WM_CLOSE:
            DestroyWindow(hwnd);
        break;
        case WM_DESTROY:
            PostQuitMessage(0);
        break;
        default:
            return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
    LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASSEX wc;
    HWND hwnd;
    MSG Msg;

    //Step 1: Registering the Window Class
    wc.cbSize        = sizeof(WNDCLASSEX);
    wc.style         = 0;
    wc.lpfnWndProc   = WndProc;
    wc.cbClsExtra    = 0;
    wc.cbWndExtra    = 0;
    wc.hInstance     = hInstance;
    //wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    wc.lpszMenuName  = MAKEINTRESOURCE(IDR_MYMENU);
    wc.lpszClassName = g_szClassName;
    wc.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
   wc.hIcon  = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON));
    wc.hIconSm  = (HICON)LoadImage(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON), IMAGE_ICON, 16, 16, 0);

    if(!RegisterClassEx(&wc))
    {
        MessageBox(NULL, "Window Registration Failed!", "Error!",
            MB_ICONEXCLAMATION | MB_OK);
        return 0;
    }

    // Step 2: Creating the Window
    hwnd = CreateWindowEx(
        WS_EX_CLIENTEDGE,
        g_szClassName,
        "P3NET - Learning Dx GUI 1",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, 240, 120,
        NULL, NULL, hInstance, NULL);

    if(hwnd == NULL)
    {
        MessageBox(NULL, "Window Creation Failed!", "Error!",
            MB_ICONEXCLAMATION | MB_OK);
        return 0;
    }

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

    // Step 3: The Message Loop
    while(GetMessage(&Msg, NULL, 0, 0) > 0)
    {
        TranslateMessage(&Msg);
        DispatchMessage(&Msg);
    }
    return Msg.wParam;
}


resources.h:
Code:

#include "afxres.h"
#define IDR_MYMENU 101
#define IDI_MYICON 201

#define ID_FILE_EXIT 9001
#define ID_STUFF_GO 9002


resource.rc:
Code:

//Microsoft Developer Studio generated resource script.
//
#include "resource.h"

#define APSTUDIO_READONLY_SYMBOLS
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 2 resource.
//
#include "resources.h"

/////////////////////////////////////////////////////////////////////////////
#undef APSTUDIO_READONLY_SYMBOLS

/////////////////////////////////////////////////////////////////////////////
// English (U.S.) resources

#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
#ifdef _WIN32
LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
#pragma code_page(1252)
#endif //_WIN32

/////////////////////////////////////////////////////////////////////////////
//
// Menu
//

IDR_MYMENU MENU DISCARDABLE
BEGIN
    POPUP "&File"
    BEGIN
        MENUITEM "E&xit",                       ID_FILE_EXIT
    END
    POPUP "&Stuff"
    BEGIN
        MENUITEM "&Go",                         ID_STUFF_GO
        MENUITEM "G&o somewhere else",          0, GRAYED
    END
END


/////////////////////////////////////////////////////////////////////////////
//
// Dialog
//

IDD_ABOUT DIALOG DISCARDABLE  0, 0, 239, 66
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "My About Box"
FONT 8, "MS Sans Serif"
BEGIN
    DEFPUSHBUTTON   "&OK",IDOK,174,18,50,14
    PUSHBUTTON      "&Cancel",IDCANCEL,174,35,50,14
    GROUPBOX        "About",IDC_STATIC,7,7,225,52
    CTEXT           "An example program showing how to use Dialog Boxes\r\n\r\nby P3NET",
                    IDC_STATIC,16,18,144,33
END

#endif    // English (U.S.) resources
/////////////////////////////////////////////////////////////////////////////



#ifndef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 3 resource.
//


/////////////////////////////////////////////////////////////////////////////
#endif    // not APSTUDIO_INVOKED


Any ideas?
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MonkeyNation
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Joined: 05 Feb 2005
Posts: 921
Location: Cardiff
PostPosted: Sun Feb 19, 2006 7:59 pm    Post subject: Reply with quote
Why don't you take a wild guess and define it? (Not in resource.rc I would assume.)
I've never done dialogs, so I've no idea what it should be. Only C++ I do is creating DLLs. (And I don't create many/aren't very good.)
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p3
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Joined: 17 Jun 2005
Posts: 615
PostPosted: Sun Feb 19, 2006 8:19 pm    Post subject: Reply with quote
I'll try defining it in resource.rc. It isn't defined in there, and it should be :D
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p3
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Joined: 17 Jun 2005
Posts: 615
PostPosted: Sun Feb 19, 2006 8:21 pm    Post subject: Reply with quote
Yep, that was the problem...
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aprelium
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Joined: 22 Mar 2002
Posts: 6800
PostPosted: Mon Feb 20, 2006 11:08 am    Post subject: Re: Error in C++ Program that I just can't figure out Reply with quote
p3,

You should define it in resources.h .
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