1

How to translate this function from AutoIt's IE.au3 UDF to Ruby? Intention is to use Watir with an Internet Explorer browser (embedded in another application).

The AutoIt function works fine but I prefer Watir (which is Ruby). I can get the handle of the embedded browser using ControlGetHandle(), which is not available from the AutoIt dll.

Below is the function to translate (also 2 others which I don't need).

;===============================================================================
;
; Function Name:    __IEControlGetObjFromHWND()
; Description:      Returns a COM Object Window reference to an embebedded Webbrowser control
; Parameter(s):     $hWin       - HWND of a Internet Explorer_Server1 control obtained for example:
;                   $hwnd = ControlGetHandle("MyApp","","Internet Explorer_Server1")
; Requirement(s):   Windows XP, Windows 2003 or higher.
;                   Windows 2000; Windows 98; Windows ME; Windows NT may install the
;                   Microsoft Active Accessibility 2.0 Redistributable:
;                   http://www.microsoft.com/downloads/details.aspx?FamilyId=9B14F6E1-888A-4F1D-B1A1-DA08EE4077DF&displaylang=en
; Return Value(s):  On Success  - Returns DOM Window object
;                   On Failure  - 0  and sets @ERROR = 1
; Author(s):        Larry with thanks to Valik
;
;===============================================================================

Func __IEControlGetObjFromHWND(ByRef $hWin)
    DllCall("ole32.dll", "int", "CoInitialize", "ptr", 0)
    Local Const $WM_HTML_GETOBJECT = __IERegisterWindowMessage("WM_HTML_GETOBJECT")
    Local Const $SMTO_ABORTIFHUNG = 0x0002
    Local $lResult, $typUUID, $aRet, $oIE
MsgBox(0, "msg", $WM_HTML_GETOBJECT)


    __IESendMessageTimeout($hWin, $WM_HTML_GETOBJECT, 0, 0, $SMTO_ABORTIFHUNG, 1000, $lResult)

    $typUUID = DllStructCreate("int;short;short;byte[8]")
    DllStructSetData($typUUID, 1, 0x626FC520)
    DllStructSetData($typUUID, 2, 0xA41E)
    DllStructSetData($typUUID, 3, 0x11CF)
    DllStructSetData($typUUID, 4, 0xA7, 1)
    DllStructSetData($typUUID, 4, 0x31, 2)
    DllStructSetData($typUUID, 4, 0x0, 3)
    DllStructSetData($typUUID, 4, 0xA0, 4)
    DllStructSetData($typUUID, 4, 0xC9, 5)
    DllStructSetData($typUUID, 4, 0x8, 6)
    DllStructSetData($typUUID, 4, 0x26, 7)
    DllStructSetData($typUUID, 4, 0x37, 8)


    MsgBox(0, "lResult", $lResult)


    $aRet = DllCall("oleacc.dll", "long", "ObjectFromLresult", "lresult", $lResult, "ptr", DllStructGetPtr($typUUID), _
            "wparam", 0, "idispatch*", 0)
MsgBox(0, "aRet4", $aRet[4])
    If IsObj($aRet[4]) Then
        $oIE = $aRet[4] .Script()
        ; $oIE is now a valid IDispatch object
        Return $oIE.Document.parentwindow
    Else
        SetError(1)
        Return 0
    EndIf
EndFunc   ;==>__IEControlGetObjFromHWND
;===============================================================================
; Function Name:    __IERegisterWindowMessage()
; Description:      Required by __IEControlGetObjFromHWND()
; Author(s):        Larry with thanks to Valik
;===============================================================================
Func __IERegisterWindowMessage($sMsg)
    Local $aRet = DllCall("user32.dll", "int", "RegisterWindowMessage", "str", $sMsg)
    If @error Then Return SetError(@error, @extended, 0)
    Return $aRet[0]
EndFunc   ;==>__IERegisterWindowMessage

;===============================================================================
; Function Name:    __IESendMessageTimeout()
; Description:      Required by __IEControlGetObjFromHWND()
; Author(s):        Larry with thanks to Valik
;===============================================================================
Func __IESendMessageTimeout($hWnd, $msg, $wParam, $lParam, $nFlags, $nTimeout, ByRef $vOut, $r = 0, $t1 = "int", $t2 = "int")
    Local $aRet
    $aRet = DllCall("user32.dll", "long", "SendMessageTimeout", "hwnd", $hWnd, "int", $msg, $t1, $wParam, _
            $t2, $lParam, "int", $nFlags, "int", $nTimeout, "int*", "")
    If @error Then
        $vOut = 0
        Return SetError(@error, @extended, 0)
    EndIf
    $vOut = $aRet[7]    
    If $r >= 0 And $r <= 4 Then Return $aRet[$r]
    Return $aRet
EndFunc   ;==>__IESendMessageTimeout

My code so far:

def get_control_from_hwnd(hnd)  
    Win32API.new("ole32", "CoInitialize", ['P'] , 'I').call(0)

    reg_msg = Win32API.new("user32", "RegisterWindowMessage", ['P'] ,'I').call("WM_HTML_GETOBJECT")
    puts "msg: " + reg_msg.to_s
    result=" "*16 
    aInt = [0xA7, 0x31, 0x0, 0xA0, 0xC9, 0x8, 0x26, 0x37].pack 'I*'
    a = [0x626FC520, 0xA41E, 0x11CF, aInt].pack 'IIIP'

    sendMessagetimeout = Win32API.new("user32", "SendMessageTimeout", ['L','I','I','I','I','I','P'] , 'L')
    sendMessagetimeout.call(hnd.hex, reg_msg, 0, 0, SMTO_ABORTIFHUNG, 1000, result)

    puts "result unpacked: " + result.unpack("L").to_s  #i can confirm this is the same as the lResult from the autoit functioin

    idisp=0 
    #the problem is likely either here or the next line afterwards
    oIE = Win32API.new("oleacc", "ObjectFromLresult", ['P','P','I','P'] , 'L')

    oIE.call(result, a, 0, idisp)
    puts "idisp: " + idisp.to_s
    # returning zero
    puts idisp.unpack("L")  

end
4

1 回答 1

0

不敢相信我们也在做同样的事情，尽管我正在尝试在 Perl 中做这件事。我不知道 Ruby，但看看脚本，它几乎看起来与 Perl 相似。看看 autoIt 上的这个线程，我仍在尝试解决这个问题http://www.autoitscript.com/forum/index.php?showtopic=104894。但我想我可能已经得到了 idisp。两个变化：

1）我打包结构的方式有点不同。我的 $iid 看起来像这样：pack('LSSC8',0x626FC520,0xA41E,0x11CF,0xA7,0x31,0x00,0xA0,0xC9,0x08,0x26,0x37)。所以在 Ruby 中我猜它会是 [0x626FC520,0xA41E,0x11CF,0xA7,0x31,0x00,0xA0,0xC9,0x08,0x26,0x37].pack 'LSSC8'？我不知道正确的语法，但你明白了。2）我从 SendMessageTimeout 解压“结果”，然后将其传递给 ObjectFromLresult。如果我直接传递结果，我会得到 0，就像你得到它一样。

但这就是我去过的地方。

于 2009-11-02T23:44:27.983 回答