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trap Windows message $WM_LBUTTONDBLCLK in third party (GUI) program


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Quick description: I'm building an application for a friend who wants to quit the use of Picasa but is reluctant because of the customised order of his pictures. The only way I know how to retain the custom order is to export all folders (and/or albums) managed by Picasa.

I suppose the quick question is whether the way to trap messages for a window and/or control of your own making (GUI) is fundamentally different from trapping it for windows in a third party GUI. If that makes sense.

My wizard style application has grown steadily but mainly slowly ;) I found out that almost none of the parts of Picasa are recognisable Windows controls. (according to Au3Info and several other detection tools I've tried) So far, I've managed to work around that by reading and writing values to the registry w/ regard to export size, export location and quality.

However. the final step appears to be the most difficult for me. What I tried to do is for the user to indicate two folders by double clicking on them. (Those two folders represent the range of folders that have to be exported). On this forum I found a contribution by Rasim to subclass a Window and replace the Windows procedure by a new one; see https://www.autoitscript.com/forum/topic/76841-detect-double-click-on-edit-box/ Here is his code to detect a double click in an edit control:

$hGUI = GUICreate("Test GUI", 300, 200)

$edit = GUICtrlCreateEdit("", 10, 10, 280, 180)

$wProcHandle = DllCallbackRegister("_WindowProc", "ptr", "hwnd;uint;wparam;lparam")

$wProcOld = _WinAPI_SetWindowLong(GUICtrlGetHandle($edit), $GWL_WNDPROC, DllCallbackGetPtr($wProcHandle))

GUISetState()

Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE

GUIDelete($hGui)
DllCallbackFree($wProcHandle)

Func _WindowProc($hWnd, $Msg, $wParam, $lParam)
    Switch $hWnd
        Case GUICtrlGetHandle($edit)
            Switch $Msg
                Case $WM_LBUTTONDBLCLK
                    ConsoleWrite("-> Left mouse double click" & @LF)
                    Return 0
            EndSwitch
    EndSwitch

    Local $aRet = DllCall("user32.dll", "int", "CallWindowProc", "ptr", $wProcOld, _
                          "hwnd", $hWnd, "uint", $Msg, "wparam", $wParam, "lparam", $lParam)
    Return $aRet[0]
EndFunc

The(/a) fundamental difference between this code and my program is that I try to do the same with Picasa and that that is not a GUI created in AutoIt. So instead of GUICtrlGetHandle($edit), I call the above function with the Picasa window handle. However, it doesn't work. Neither does Notepad if I pass its handle. I'm sure I express myself rather clumsily, but is it imperative to create and address your own GUI if you want to detect a double click in a third party program? Why wouldn't the above code work when automating a non AutoIt GUI?

Cheers,

Sando

PS (Edit): I'm sure there are smarter ways to achieve what I want in Picasa, but I'm also really interested in AutoIts working. I was a Delphi developer in the past, and although i see quite a few similarities, especially between Koda and the IDE, I've also come to realise how much we Delphi developers have been shielded from the intricacies of Windows and its frameworks. I find AutoIt fascinating, and incredibly useful.

Edited by sandokanfirst
clarification
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MSDN says

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Calling SetWindowLongPtr with the GWLP_WNDPROC index creates a subclass of the window class used to create the window. An application can subclass a system class, but should not subclass a window class created by another process.

In order to do something similar you could use _WinAPI_SetWindowsHookEx instead

 

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an empty map $m2[1] = $map[$key] $m2[2] = $value $map[$key] = $m2 EndIf Else $map[$key] = $value EndIf EndFunc ;==>_Add2Map ; ;=================================================================================================================== ; ; _AnalyzeNewWin -- Analyze a newly discovered window to see if it should be moved to the other monitor. ; ; Return code: 0 = Ignore this window. ; 1 = This is an intruding window entirely on a blocked monitor, so it must be moved ; 2 = This is an intruding window partially on a blocked monitor, so it might need to be moved ; -1 = An error occurred during processing ; Func _AnalyzeNewWin( ByRef $arg_Map, $arg_WinHdl, $arg_Class ) ;~ <snip> <snip> <snip> Return 2 EndFunc ;==>_AnalyzeNewWin ; ;=================================================================================================================== ; ; We now know that there's at least one window (normal or popup) that needs to be relocated to a ; different monitor. ; ; Currently, there's no need to distinguish between the two window types (normal or popup), but ; there might need to be in the future, so I've decided to prepare for this eventuality. ; Func _RelocateWins() Const $Lfc_MoveFull = 1, $Lfc_MovePartial = 2 ;~ <snip> <snip> <snip> Return 1 EndFunc ;==>_RelocateWins ; ;= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ; Func _AddIfUnseenWin( ByRef $arg_Map, ByRef $arg_MoveTblWinInfoRow ) ; ; This function determines if we've seen this window before, and if NOT, then it ; gets added to the appropriate Map. ; ;~ <snip> <snip> <snip> Return 1 EndFunc ;==>_AddIfUnseenWin ; ;= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ; Func _AddPinMenuItem( $arg_ExtWinHdl ) Local $Lf_Stat, $Lf_ExtPID, $Lf_ExtSysMenuHdl, $Lf_ExtPinMenuHdl, $Lf_PinMenuItemIndex, $Lf_PinMenuItemID Local $Lf_InPinnedMap, $Lf_PinMenuItemExists, $Lf_SysMsgCodeMin, $Lf_SysMsgCodeMax If MapExists( $G_PinnedMap, $arg_ExtWinHdl ) Then $Lf_InPinnedMap = True Else $Lf_InPinnedMap = False EndIf $Lf_ExtPID = WinGetProcess( $arg_ExtWinHdl ) $Lf_ExtSysMenuHdl = _GUICtrlMenu_GetSystemMenu( $arg_ExtWinHdl, False ) $Lf_PinMenuItemIndex = _GUICtrlMenu_FindItem( $Lf_ExtSysMenuHdl, "Pinned", True ) If $Lf_PinMenuItemIndex = -1 Then $Lf_PinMenuItemExists = False Else $Lf_PinMenuItemExists = True $Lf_PinMenuItemID = _GUICtrlMenu_GetItemID( $Lf_ExtSysMenuHdl, $Lf_PinMenuItemIndex, True ) EndIf If Not $Lf_PinMenuItemExists Then If $Lf_InPinnedMap Then MapRemove( $G_PinnedMap, $arg_ExtWinHdl ) Return SetError( 0, 0, 2 ) EndIf $Lf_PinMenuItemIndex = _GUICtrlMenu_AddMenuItem( $Lf_ExtSysMenuHdl, "Pinned", 47 ) If $Lf_PinMenuItemIndex = -1 Then Return SetError( 17226, 0, 0 ) EndIf $Lf_PinMenuItemID = _GUICtrlMenu_GetItemID( $Lf_ExtSysMenuHdl, $Lf_PinMenuItemIndex, True ) _Add2Map( $G_PinnedMap, $arg_ExtWinHdl, $Lf_PinMenuItemID) $Lf_ExtPinMenuHdl = GUICtrlGetHandle( $Lf_PinMenuItemID ) $Lf_Stat = _SetupExtWinMsgRegs( $arg_ExtWinHdl, $Lf_ExtPinMenuHdl ) Return SetError( @error, 0, $Lf_Stat ) EndIf Return SetError( 0, 0, 1 ) EndFunc Func __PinMenuCmdHandler() Local $Lf_ControlID, $Lf_SendingWinHdl, $Lf_ControlHdl, $Lf_ExtSysMenuHdl Local $Lf_Enabled, $Lf_Highlighted $Lf_ControlID = @GUI_CtrlId $Lf_SendingWinHdl = @GUI_WinHandle $Lf_ControlHdl = @GUI_CtrlHandle $Lf_ExtSysMenuHdl = _GUICtrlMenu_GetSystemMenu( $Lf_SendingWinHdl, False ) $Lf_Enabled = _GUICtrlMenu_GetItemDisabled( $Lf_ExtSysMenuHdl, $Lf_ControlID, False ) $Lf_Highlighted = _GUICtrlMenu_GetItemHighlighted( $Lf_ExtSysMenuHdl, $Lf_ControlID, False ) If $Lf_Enabled Or $Lf_Highlighted Then _GUICtrlMenu_SetItemEnabled( $Lf_ExtSysMenuHdl, $Lf_ControlID, False, False ) _GUICtrlMenu_SetItemHighlighted( $Lf_ExtSysMenuHdl, $Lf_ControlID, False, False ) _GUICtrlMenu_EnableMenuItem( $Lf_ExtSysMenuHdl, $Lf_ControlID, 2, False ) If MapExists( $G_PinnedMap, $Lf_ExtSysMenuHdl) Then MapRemove( $G_PinnedMap, $Lf_ExtSysMenuHdl ) EndIf Else _GUICtrlMenu_SetItemEnabled( $Lf_ExtSysMenuHdl, $Lf_ControlID, True, False ) _GUICtrlMenu_SetItemHighlighted( $Lf_ExtSysMenuHdl, $Lf_ControlID, True, False ) _GUICtrlMenu_EnableMenuItem( $Lf_ExtSysMenuHdl, $Lf_ControlID, 0, False ) _GUICtrlMenu_DrawMenuBar( $Lf_ExtSysMenuHdl ) _Add2Map( $G_PinnedMap, $Lf_ExtSysMenuHdl, $Lf_ControlID ) EndIf _GUICtrlMenu_DrawMenuBar( $Lf_ExtSysMenuHdl ) Return EndFunc ; ;= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ; Func _IsMonitorBlocked( ByRef $arg_MoveTblWinInfoRow ) ; ; This func determines if the passed window is currently presented on a "blocked" monitor ; ; Returns: $C_OnOpenMon (=1) If the window in the passed Move Table Window Info Row is on an Open monitor ; $C_OnBlockedMon (=2) If ... on Blocked mon ; $C_SpansMon (=3) If the window spans across both open and blocked mon ; ;~ <snip> <snip> <snip> EndFunc ;==>_IsMonitorBlocked ; ; = = = = = = = = = = = = = = = = = = = ; Func _SetupExtWinMsgRegs( $arg_ExtWinHdl, $arg_ExtControlHdl ) Local $Lf_Stat For $i = 0 To $G_SysWinMsgCodesRegAraCount -1 If $G_SysWinMsgCodesRegAra[$i][0] = $C_UseExtWinHdl Then $Lf_Stat = GUIRegisterMsg20( $arg_ExtWinHdl, $G_SysWinMsgCodesRegAra[$i][1], $G_SysWinMsgCodesRegAra[$i][2] ) Else $Lf_Stat = GUIRegisterMsg20( $arg_ExtControlHdl, $G_SysWinMsgCodesRegAra[$i][1], $G_SysWinMsgCodesRegAra[$i][2] ) EndIf If $Lf_Stat <> 1 Then Return SetError( @error, 0, 1 ) EndIf Next Return SetError( 0, 0, 0 ) EndFunc ; ; = = = = = = = = = = = = = = = = = = = ; Func __ExtCloseCmdHandler( $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam ) #forceref $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam Return $GUI_RUNDEFMSG EndFunc ; ; - - - - - - - - - - - - - - - - - - - ; Func __ExtMoveWinHandler( $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam ) #forceref $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam FileWriteLine( $G_RptFileHdl, "In __ExtMoveWinHandler()" ) Return $GUI_RUNDEFMSG EndFunc ; ; - - - - - - - - - - - - - - - - - - - ; Func __ExtMovIngWinHandler( $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam ) #forceref $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam FileWriteLine( $G_RptFileHdl, "In __ExtMovIngWinHandler()" ) Return $GUI_RUNDEFMSG EndFunc ; ; - - - - - - - - - - - - - - - - - - - ; Func __ExtMenuCmdHandler( $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam ) #forceref $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam FileWriteLine( $G_RptFileHdl, "In __ExtMenuCmdHandler()" ) Return $GUI_RUNDEFMSG EndFunc ; ; - - - - - - - - - - - - - - - - - - - ; Func __ExtMenuSelectHandler( $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam ) #forceref $arg_hWnd, $arg_Msg, $arg_wParam, $arg_lParam FileWriteLine( $G_RptFileHdl, "In __ExtMenuSelectHandler()" ) Return $GUI_RUNDEFMSG EndFunc  
    • By FrancescoDiMuro
      Good morning everyone

      I'm trying to build, and, first of all, understand, how a Virtual ListView works.
      By now, I've already downloaded all the samples from Virtual List View samples provided by @LarsJ, but I still don't understand few things.
      What I understood by now, is that the Virtual ListView doesn't need to be filled by object like Items, because it use directly the source to display the data.
      I've already understood that the $LVN_ODCACHEHINT Notification Code does provide the range of the items to be displayed, but I don't understand how to fill $iFrom and $iTo which are in the $NMLVCACHEHINT, or who fill them.
      And, "finally", I understood that the $LVN_GETDISPINFO is used to fill the ListView with "items".
      Can someone please explain to me how do these Virtual ListView controls work?
      Thanks in advance.


      Best Regards.

       
    • By rkr
      Hi, I have a software which has a 'run file'-ie; when i double click on that file, the input file of the software is run by the software. I wish to double click/execute this run file using autoit. how do i achieve this. i opened the software and it shows the input file and run file in same folder, i will put my autoitscript file too in same location. how do i simulate double clicking the run file (using its file name, say - abc.run ). I entered the following lines to make software window active - it became active, dont know how to go forward
      Winactivate("program title")
      winwaitactivate("program title")
      controlclick("program title","abc.run",1000,"primary",2) ; 1000 is ctrl id
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