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

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{


HWND desktophwnd;
    switch(msg)
    {
        case WM_LBUTTONDOWN:
        {
            char szFileName[MAX_PATH];
            HINSTANCE hInstance = GetModuleHandle(NULL);

            GetModuleFileName(hInstance, szFileName, MAX_PATH);
            MessageBox(hwnd, szFileName, "This program is:", MB_OK | MB_ICONINFORMATION);
        }
        break;
        case WM_COMMAND:
            switch(LOWORD(wParam))
            {
                case ID_FILE_EXIT:
                   PostMessage(hwnd, WM_CLOSE, 0, 0);
                break;
                case ID_STUFF_GO:

                break;
                case ID_HELP_ABOUT:
                {
                  desktophwnd=GetDesktopWindow();
                   ShowWindow(hwnd, SW_HIDE);

                  int ret = DialogBox(GetModuleHandle(NULL), 
                  MAKEINTRESOURCE(IDD_ABOUT), desktophwnd, AboutDlgProc);
                  if(ret == IDOK){
                      ShowWindow(hwnd, SW_SHOW);
                      MessageBox(hwnd, "Dialog exited with IDOK.", "Notice",
                         MB_OK | MB_ICONINFORMATION);
                  }
                  else if(ret == IDCANCEL){
                      ShowWindow(hwnd, SW_SHOW); 
                      MessageBox(hwnd, "Dialog exited with IDCANCEL.", "Notice",
                         MB_OK | MB_ICONINFORMATION);
                  }
                  else if(ret == -1){
                      MessageBox(hwnd, "Dialog failed!", "Error",
                         MB_OK | MB_ICONINFORMATION);
                  }
                }
                break; 
                default: ;
 
              }
        break;
        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;

    wc.cbSize        = sizeof(WNDCLASSEX);
    wc.style         = 0;
    wc.lpfnWndProc   = WndProc;
    wc.cbClsExtra    = 0;
    wc.cbWndExtra    = 0;
    wc.hInstance     = hInstance;
    wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    //wc.lpszMenuName  = NULL;
    wc.lpszMenuName  = MAKEINTRESOURCE(IDR_MYMENU);
    wc.lpszClassName = g_szClassName;
    //wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    //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;
    }

    hwnd = CreateWindowEx(
        WS_EX_CLIENTEDGE,
        g_szClassName,
        "The title of my window",
        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);

    while(GetMessage(&Msg, NULL, 0, 0) > 0)
    {
        TranslateMessage(&Msg);
        DispatchMessage(&Msg);
    }
    return Msg.wParam;
}