Const HH_DISPLAY_TOPIC = &H0
Const HH_SET_WIN_TYPE = &H4
Const HH_GET_WIN_TYPE = &H5
Const HH_GET_WIN_HANDLE = &H6
Const HH_DISPLAY_TEXT_POPUP = &HE  ' Display string resource ID or text in a pop-up window.
Const HH_HELP_CONTEXT = &HF        ' Display mapped numeric value in dwData.
Const HH_TP_HELP_CONTEXTMENU = &H10 ' Text pop-up help, similar to WinHelp's HELP_CONTEXTMENU.
Const HH_TP_HELP_WM_HELP = &H11    ' text pop-up help, similar to WinHelp's HELP_WM_HELP.
Const HH_CLOSE_ALL = &H12
Private Declare Function HtmlHelp Lib "hhctrl.ocx" Alias "HtmlHelpA" (ByVal hwndCaller As Long, ByVal pszFile As String, ByVal uCommand As Long, ByVal dwData As Long) As Long
Private Sub Form_Load()
    'KPD-Team 2000
    'URL: http://www.allapi.net/
    'E-Mail:
    Dim hwndHelp As Long
    'The return value is the window handle of the created help window.
    hwndHelp = HtmlHelp(hWnd, "myfile.chm", HH_DISPLAY_TOPIC, 0)
End Sub
Private Sub Form_Unload(Cancel As Integer)
    HtmlHelp Me.hWnd, "", HH_CLOSE_ALL, 0
End Sub

Sub wlacz_pomoc()
Application.Help ThisWorkbook.Path & "\koszty-p-p18.chm"
End Sub