Tooltips DDT

[Peter Lameijn]

Has anybody used 'Control Add ""tooltips_class32".....' instead of
CreateWindowEx to produce tooltips? I've not seen any examples and cannot
get it to work.


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Peter.
mailto[email protected][email protected]</A>

[Chris Boss]

I tried this myself and I couldn't use CONTROL ADD for some reason.
I had to resort to using CreateWindowEx !

CreateWindowEx should work fine !



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[Peter Lameijn]

What's wrong (or missing here)? I don't get tooptips on the buttons
The enumeration function seems to work OK. (Adds all controls to the tooptip)

#Compile Exe
#Include "win32api.inc"
#Include "commctrl.inc

Global hDlg      As Long
Global hTTip     As Long
Global hInstance As Long

'=====================/ Enumeration callback /=================================

Function EnumChildProc(ByVal CtrlDlg As Long, param As Long) As Long
  Local lTI As TOOLINFO, lZStr As Asciiz * 128
  GetClassName CtrlDlg, lzStr, SizeOf(lzStr)
  If lzStr = "STATIC" Then
    lTI.cbSize  = SizeOf(lTI)
    lTI.uFlags  = %TTF_IDISHWND Or %TTF_SUBCLASS
    lTI.hwnd    = hDlg
    lTI.uID     = CtrlDlg
    lTI.hInst   = hInstance
    lTI.lpszText= %LPSTR_TEXTCALLBACK
    SendMessage hTTip, %TTM_ADDTOOL, 0, VarPtr(lTI)
  End If
  Function = 1
End Function

'==============================================================================
Function AddToolTips (ByVal hDlg As Long) As Long
  hTTip = CreateWindowEx (0, _
                          "tooltips_class32", _
                          ByVal %NULL, _
                          %WS_POPUP Or %TTS_ALWAYSTIP, _
                          %CW_USEDEFAULT, _
                          %CW_USEDEFAULT, _
                          %CW_USEDEFAULT, _
                          %CW_USEDEFAULT, _
                          ByVal hDlg, _
                          ByVal %NULL, _
                          GetWindowLong (hDlg, %GWL_HINSTANCE), _
                          ByVal %NULL)
  If hTTip = %FALSE Then Function = 0 : Exit Function

  If (EnumChildWindows (hDlg, CodePtr(EnumChildProc), 0)) = 0 Then
    Function = %FALSE
  Else
    Function = %TRUE
  End If
End Function

'==============================================================================
CallBack Function MainCb() As Long
  Local lTTptr As TOOLTIPTEXT Ptr, lZStr As Asciiz * 64
  Select Case CbMsg
    Case %WM_NOTIFY
      lTTPtr = CbLparam
      If @lTTPtr.Hdr.Code = %TTN_NEEDTEXT Then
         lZStr = Time$
         @lTTPtr.lpszText = VarPtr(lZStr)
      End If
  End Select
End Function
'==============================================================================
Function WinMain (ByVal CurInst&, ByVal PrvInst&, CmdLine As Asciiz Ptr, _
                  ByVal CmdShow&) Export As Long
  Local lRet As Long
  hInstance = CurInst&
  InitCommonControls
  Dialog New 0, "ToolTip",,,100,100,%WS_OVERLAPPED Or %WS_SYSMENU To hDlg
  Control Add Button, hDlg,101,"Button #1",30,10,40,14,%WS_TABSTOP
  Control Add Button, hDlg,102,"Button #2",30,30,40,14,%WS_TABSTOP
  Control Add Button, hDlg,103,"Button #3",30,50,40,14,%WS_TABSTOP
  Control Handle hDlg,101 To lRet
  AddToolTips hDlg
  Dialog Show Modal hDlg Call MainCb
End Function

------------------
Peter.
mailto[email protected][email protected]</A>

[This message has been edited by Peter Lameijn (edited April 01, 2001).]

[Semen Matusovski]

Peter --
Very doubt that a class name for buttons is "STATIC"

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E-MAIL: [email protected]

[Chris Boss]

Peter ;

Your code won't work !

The TYPE defined in the common control inc file is :

TYPE TOOLTIPTEXT
  hdr          AS NMHDR
  lpszText     AS ASCIIZ PTR
  szText       AS ASCIIZ * 80
  hInst        AS LONG
  uFlags       AS DWORD
END TYPE

Your have defined the sztext member as lpszText (a pointer) and
you are trying to change the pointer to a pointer towards your
asciiz string in your function. When the message returns control
to windows (function ends), your asciiz string which is local will
disappear before Windows can process the string.

The tooltip control is passing a valid ascii string buffer in the
type described above, so you don't need to define your own asciiz
string. You must put data into the asciiz buffer passed to your
dialog procedure, not change it to another buffer.




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[Peter Lameijn]

Chris,

Thanks, you're right in that point, but something else was wrong; I even didn't get
a WM_NOTIFY message. In the enumeration function, the line
If lZStr = "STATIC" should be If lZStr <> "STATIC"
(No need to add tips to static controls...)


------------------
Peter.
mailto[email protected][email protected]</A>

[This message has been edited by Peter Lameijn (edited April 01, 2001).]