#define IDI_ICON         100
#define IDC_DLG_TEXT     101
#define IDC_EDITBOX_TEXT 102
	

// Win32 Tutorial (Initialization Dialog Box)
// Alan Baylis 2004

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

#define BUFFER_SIZE 256

const char ClassName[] = "MainWindowClass";
char szText[BUFFER_SIZE];
HWND hWndEditBox;

LRESULT CALLBACK WndProc( HWND    hWnd,
                          UINT    Msg,
                          WPARAM  wParam,          
                          LPARAM  lParam )
{
    switch (Msg)
    {
        case WM_CREATE:
        {
            hWndEditBox = CreateWindow(
            "EDIT", 
            "Default Text", 
            WS_VISIBLE | WS_CHILD, 
            10, 
            10, 
            100, 
            50, 
            hWnd, 
            (HMENU)IDC_EDITBOX_TEXT, 
            (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE), 
            NULL);

            if (!hWndEditBox)
                MessageBox(NULL, "Edit Box Failed.", "Error", MB_OK | MB_ICONERROR);
        }
        break;

        case WM_CLOSE:
            DestroyWindow(hWnd);
        break;

        case WM_DESTROY:
            PostQuitMessage(0);
        break;

        default:
            return (DefWindowProc(hWnd, Msg, wParam, lParam));
    }

    return 0;
}

BOOL CALLBACK InitProc( HWND   hDlgWnd,
                        UINT   Message, 
                        WPARAM wParam, 
                        LPARAM lParam )
{
    switch(Message)
    {
        case WM_INITDIALOG:
            SendDlgItemMessage(hDlgWnd, IDC_DLG_TEXT, EM_SETLIMITTEXT, (WPARAM)BUFFER_SIZE - 1, (LPARAM)0);
            SetDlgItemText(hDlgWnd, IDC_DLG_TEXT, "Enter Text");
            return TRUE;
        break;

        case WM_COMMAND:
            switch(LOWORD(wParam))
            {
                case IDCANCEL:
                    EndDialog(hDlgWnd, IDCANCEL);
                    return TRUE;
                break;

                case IDOK:
                    GetDlgItemText(hDlgWnd, IDC_DLG_TEXT, szText, BUFFER_SIZE);
                    EndDialog(hDlgWnd, IDOK);
                    return TRUE;
                break;
            }
        break;
    }
    return FALSE;
}

INT WINAPI WinMain( HINSTANCE  hInstance,
                    HINSTANCE  hPrevInstance,
                    LPSTR      lpCmdLine,
                    INT        nCmdShow )
{
    WNDCLASSEX    wc;

    wc.cbSize           = sizeof(WNDCLASSEX);
    wc.style            = 0;
    wc.lpfnWndProc      = (WNDPROC)WndProc;
    wc.cbClsExtra       = 0;
    wc.cbWndExtra       = 0;
    wc.hInstance        = hInstance;
    wc.hIcon            = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ICON));
    wc.hIconSm          = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ICON));
    wc.hCursor          = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground    = (HBRUSH)(COLOR_WINDOW + 1);
    wc.lpszMenuName     = NULL;
    wc.lpszClassName    = ClassName;

    if (!RegisterClassEx(&wc))
    {
        MessageBox(NULL, "Failed To Register The Window Class.", "Error", MB_OK | MB_ICONERROR);
        return 0;
    }

    HWND    hWnd;

    hWnd = CreateWindowEx(
    WS_EX_CLIENTEDGE,
    ClassName,
    "Initialization Dialog",
    WS_OVERLAPPEDWINDOW,
    CW_USEDEFAULT,
    CW_USEDEFAULT,
    240,
    120,
    NULL,
    NULL,
    hInstance,
    NULL);

    if (!hWnd)
    {
        MessageBox(NULL, "Window Creation Failed.", "Error", MB_OK | MB_ICONERROR);
        return 0;
    }

    ShowWindow(hWnd, SW_HIDE);

    if (DialogBox(hInstance, "DIALOG_NAME", hWnd, (DLGPROC)InitProc) != IDCANCEL)
    {
        SetDlgItemText(hWnd, IDC_EDITBOX_TEXT, szText);
        ShowWindow(hWnd, SW_SHOW);
        UpdateWindow(hWnd);
        SetFocus(hWnd);
        UpdateWindow(hWnd);
    }
    else
        PostQuitMessage(0);

    MSG    Msg;

    while (GetMessage(&Msg, NULL, 0, 0))
    {
        TranslateMessage(&Msg);
        DispatchMessage(&Msg);
    }

    return Msg.wParam;
}