/*
 * PROJECT:         ReactOS Simple Program
 * LICENSE:         GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
 * PURPOSE:         Main file code
 * COPYRIGHT:       Copyright ??? (???)
 */

/* INCLUDES *******************************************************************/

#include "precomp.h"

/* GLOBALS ********************************************************************/

HINSTANCE hGlobalInstance = NULL;
HICON hIcon = NULL;

/* FUNCTIONS ******************************************************************/

BOOL
DlgInitHandler(_In_ HWND hDlg)
{
    INT PosX, PosY;
    RECT Rect;
    WCHAR szAppPath[MAX_BUFFER];

    /* Center the dialog on the screen */
    GetWindowRect(hDlg, &Rect);
    PosX = (GetSystemMetrics(SM_CXSCREEN) - Rect.right) / 2;
    PosY = (GetSystemMetrics(SM_CYSCREEN) - Rect.bottom) / 2;
    SetWindowPos(hDlg, 0, PosX, PosY, 0, 0, SWP_NOZORDER | SWP_NOSIZE);

    /* Extract the icon resource from the executable process */
    GetModuleFileNameW(NULL, szAppPath, _countof(szAppPath));
    hIcon = ExtractIconW(hGlobalInstance, szAppPath, 0);

    /* Set the icon within the dialog's title bar */
    if (hIcon)
    {
        SendMessageW(hDlg, WM_SETICON, ICON_SMALL, (LPARAM)hIcon);
    }

    return TRUE;
}

INT_PTR CALLBACK
DlgProc(
    _In_ HWND hDlg,
    _In_ UINT Msg,
    _In_ WPARAM wParam,
    _In_ LPARAM lParam)
{
    switch (Msg)
    {
        case WM_INITDIALOG:
            return DlgInitHandler(hDlg);

        case WM_CLOSE:
            DestroyIcon(hIcon);
            EndDialog(hDlg, FALSE);
            break;

        case WM_COMMAND:
        {
            switch (LOWORD(wParam))
            {
                case IDC_SIMPLE_BUTTON:
                    DestroyIcon(hIcon);
                    EndDialog(hDlg, FALSE);
                    break;

                default:
                    break;
            }

            break;
        }
    }

    return 0;
}


int WINAPI
wWinMain(
    _In_ HINSTANCE hInstance,
    _In_ HINSTANCE hPrevInstance,
    _In_ LPWSTR pCmdLine,
    _In_ int nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(pCmdLine);
    UNREFERENCED_PARAMETER(nCmdShow);

    /* Cache the handle instance of our program */
    hGlobalInstance = hInstance;

    /* Create the dialog box */
    DialogBoxW(
        hInstance,
        MAKEINTRESOURCEW(IDD_SIMPLE_DIALOG),
        GetDesktopWindow(),
        DlgProc);

    return 0;
}