AutoHotkey Community

TargetWin = Test Window

; Generated using SmartGUI Creator 3.4

Gui, Add, Button, x16 y17 w60 h30, Button
Gui, Add, Checkbox, x16 y57 w70 h30, Checkbox
Gui, Add, Edit, x116 y17 w140 h70, Edit
Gui, Show, x158 y318 h103 w269, %TargetWin%
SetTimer, Tip, 2000
Return

GuiClose:
ExitApp

Tip:
   IfWinNotActive, %TargetWin%
   {
      ToolTip
      Return
   }

   MouseGetPos,,,, ACtrl
   Tip =
   
   If ACtrl = Button1
      Tip = A Button

   If ACtrl = Button2
      Tip = A Checkbox

   If ACtrl = Edit1
      Tip = My Edit field
   
   If ACtrl <> %LastCtrl%
   {
      ToolTip, %Tip%
      LastCtrl = %ACtrl%
   }
Return

; requires getClassNN() from http://www.autohotkey.com/forum/viewtopic.php?t=20099&highlight=classnn+hwnd
; Note:  ControlNN(variable_name_of control) does not work.

TargetWin = Test Window

Gui, Add, Button, x16 y17 w60 h30 HWNDbutton_hwnd, Button
Gui, Add, Checkbox, x16 y57 w70 h30, Checkbox example
Gui, Add, Edit, x116 y17 w140 h70 vedit_me, Edit
Gui, Show, x158 y318 h103 w269, %TargetWin%
SetTimer, Tip, 2000
Return

GuiClose:
ExitApp

Tip:
   IfWinNotActive, %TargetWin%
   {
     ToolTip
     Return
   }
   
   MouseGetPos,,,, ACtrl
   Tip =
   
   If (ACtrl == getClassNN(button_hwnd)) {
      Tip = Works using control's HWND
   }
   
   If (ACtrl == getClassNN("Checkbox example")) {
      Tip = Works using control's caption
   }
   
   If (ACtrl == "Edit1") {
      Tip = Works using control's ControlNN
   }
   
   If ACtrl <> %LastCtrl%
   {
     ToolTip, %Tip%
     LastCtrl = %ACtrl%
   }
Return