AutoHotkey Community

; Showcase for two windows with interaction
; tested OS: Windows XP Pro
; AHK version: 1.0.26.00
; Date: 2005-02-14

Windowtitle1 = First Window
Windowtitle2 = Second Window

; GUI of 1st window
Gui, 1:Add, Checkbox, x10 y10 vCkbEditSimu                     , &Edit both windows simultaneously
Gui, 1:Add, Button,   y+10 vBtnOpen2ndWindow gBtnOpen2ndWindow , &Open 2nd window
Gui, 1:Add, Text,     y+10 vTxtNumber2ndWindow                 , Number from 2nd Window:
Gui, 1:Add, Edit,     r1 ReadOnly vEdtNumber2ndWindow x+5 yp-3 w40,
Gui, 1:Add, Edit,     r5 xs y+10 w172 vEdtEdit1stWindow        , Try to edit this field when 2nd window is open
Gui, 1:Add, Button,   Default xs+135                           , &Close

; GUI of 2nd window, which is owned by 1st window
Gui, 2:+owner1
Gui, 2:Add, Text  , x10 y10                                 , Input Number:
Gui, 2:Add, Edit  , r1 Number Limit2 x+5 yp-3 w40 vEdtNumber, 10
Gui, 2:Add, Button, Default xs+30 y+5                       , &Apply
Gui, 2:Add, Button, v2ndCancel g2ndCancel x+0               , &Cancel

; Show 1st window
Gui, 1:Show,          x100 y100                             , %Windowtitle1%
Return

; +++++++++++++++++++++++ End of auto-execute +++++++++++++++++++++++++++

; +++++++++++++++++++++++++++++++++++++++++++++++++++++++ Open 2nd window
BtnOpen2ndWindow:
  ; get value of CkbEditSimu
  Gui, 1:Submit, NoHide
  ; open 2nd window
  Gui, 2:Show ,x350 y100, %Windowtitle2%
  ; if simultaneous edit is active ...
  if CkbEditSimu
    { ; ... disable the open-button to open another 2nd window
      GuiControl, 1:Disable, BtnOpen2ndWindow             
    }
  else
    { ; ... otherwise hide the Cancel-Button, so that user can only press Apply-Button
      GuiControl, 2:Hide, 2ndCancel   ; Auto-Label doesn't work, Button needs variabel
      ; set 1st window inactive
      Gui, 1: +Disabled
    }
return

; +++++++++++++++++++ Apply Number from 2nd window into field of 1st window
2ButtonApply:
  ; get variable in field, if simultaneous edit keep window otherwise hide it
  if CkbEditSimu
      Gui, 2:Submit, NoHide
  else
    {
      Gui, 2:Submit
      GoSub, 2ndCancel
    }
  ; set number into field of 1st "1:" window (important, AHK needs to know which GUI)
  GuiControl,1:,EdtNumber2ndWindow,%EdtNumber%
  ; increase the number in the Apply field for easier testing
  NewInput := EdtNumber + 1
  GuiControl,2:,EdtNumber, %NewInput%
return

; +++++++++++++++++++++++++++++++++++++++++++++++++++++++ Closing 2nd window
2ndCancel:
2GuiClose:   ; 2GuiClose = GuiClose of second window     
  ;restore all options of controla and GUI to normal
  Gui, 1: -Disabled
  GuiControl, 1:Enable, BtnOpen2ndWindow
  GuiControl, 2:Show, 2ndCancel
  ;set focus on first window
  WinActivate, %Windowtitle1%
  ; "Gui, 2:Cancel" keeps window in memory, so it can be opened again.
  ; "Gui, 2:Destroy" would release the memory but the window couldn't be open again.
  Gui, 2:Cancel 
return         

; +++++++++++++++++++++++++++++++++++++++++++++++++++++++ Exiting 1st window
ButtonClose:
GuiClose:
  ExitApp