INT_PTR CALLBACK Login(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)

UNREFERENCED_PARAMETER(lParam);
switch (message)
{
case WM_INITDIALOG:

    return (INT_PTR)TRUE;

case WM_COMMAND:
    if (LOWORD(wParam) == IDOK)
    {
        GetDlgItemText(hDlg,IDC_EDITUSER, LPWSTR(user), 20);
         a = strlen (user);
        if (a == 0)
        {
            MessageBox(NULL,L"Please enter a username!", L"Error!" , MB_OK | MB_ICONERROR);
            return (INT_PTR)TRUE;
        }
        GetDlgItemText(hDlg,IDC_EDITPASS, LPWSTR(pass), 20);
         b = strlen (pass);
        if (b == 0)
        {
            MessageBox(NULL,L"Please enter a password!", L"Error!" , MB_OK | MB_ICONERROR);
            return (INT_PTR)TRUE;
        }
        EndDialog(hDlg, LOWORD(wParam));
        return (INT_PTR)TRUE;
    }
    if  (LOWORD(wParam) == IDCANCEL)
    {
        DestroyWindow(hwnd);
        PostQuitMessage(0);
        EndDialog(hDlg, LOWORD(wParam));
        return (INT_PTR)TRUE;
    }
    break;
}
return (INT_PTR)FALSE;}

IDD_LOGIN DIALOGEX 0, 0, 315, 184
STYLE DS_LOCALEDIT | DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_VISIBLE | WS_CAPTION
EXSTYLE WS_EX_PALETTEWINDOW | WS_EX_STATICEDGE
CAPTION "Abso FTP"
FONT 9, "Comic Sans MS", 400, 0, 0x0
BEGIN
    DEFPUSHBUTTON   "OK",IDOK,205,161,50,14
    PUSHBUTTON      "Exit",IDCANCEL,259,161,50,14
    RTEXT           "Username:",IDC_STATICUSR,75,67,41,16,SS_CENTERIMAGE
    RTEXT           "Password:",IDC_STATICPWD,76,95,41,16,SS_CENTERIMAGE,WS_EX_RIGHT
    CONTROL         131,IDB_BITMAP,"Static",SS_BITMAP | SS_CENTERIMAGE | SS_RIGHTJUST | SS_REALSIZEIMAGE | WS_GROUP,65,14,190,36
    EDITTEXT        IDC_EDITUSER,124,69,91,12,ES_AUTOHSCROLL,WS_EX_DLGMODALFRAME | WS_EX_STATICEDGE
    EDITTEXT        IDC_EDITPASS,124,97,91,12,ES_PASSWORD | ES_AUTOHSCROLL,WS_EX_DLGMODALFRAME | WS_EX_STATICEDGE
END