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TheDcoder

Embedded IE fails to load webpage

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Hello everyone,

I encountered this strange issue while working on a freelance project, I cannot give you the webpage/website on which this is happening because it is an internal site which is inaccessible externally. I am attempting to create a GUI with an IE control embedded in it, but when I navigate to the desired address, it shows a blank white page.

The webpage does load if I use a different browser or normal (non-embedded) IE instance.

I managed to get my hands on the source of the blank page:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

    <head>
        <link rel="stylesheet" type="text/css" href="res://ieframe.dll/ErrorPageTemplate.css" />

        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

        <title>Navigationen blev annulleret</title>

        <script src="res://ieframe.dll/errorPageStrings.js" language="javascript" type="text/javascript">
        </script>
        <script src="res://ieframe.dll/httpErrorPagesScripts.js" language="javascript" type="text/javascript">
        </script>
    </head>

    <body onLoad="javascript:navCancelInit(); ">

        <table width="730" cellpadding="0" cellspacing="0" border="0">

        <!-- Error title -->
            <tr>
                <td id="infoIconAlign" width="60" align="left" valign="top" rowspan="2">
                    <img src="res://ieframe.dll/info_48.png" id="infoIcon" alt="Oplysningsikon">
                </td>
                <td id="mainTitleAlign" valign="middle" align="left" width="*">
                    <h1 id="mainTitle">Navigationen til websiden blev annulleret</h1>
                </td>
            </tr>



            <tr>
                <!-- This row is for HTTP status code, as well as the divider-->
                <td id="errorCodeAlign" class="errorCodeAndDivider" align="right">&nbsp;
                    <div class="divider"></div>
                </td>
            </tr>


        <!-- Error Body -->

        <!-- What you can do -->
            <tr>
                <td>
                    &nbsp;
                </td>
                <td id="whatToTryAlign" valign="top" align="left">
                    <h2 id="whatToTry">Prøv at:</h2>
                </td>
            </tr>

        <!-- refresh page -->
            <tr>
                <td >
                    &nbsp;
                </td>
                <td id="refreshPageAlign" align="left" valign="middle">
                    <h4>
                        <table>
                          <tr>
                              <td valign="top">
                                  <img src="res://ieframe.dll/bullet.png" border="0" alt="" class="actionIcon">
                              </td>
                              <td valign="top">
                                  <span id="navCancelContainer"></span><noscript id="refreshPage">Opdatere siden.</noscript>
                              </td>
                          </tr>
                        </table>
                    </h4>
                </td>
            </tr>
        </table>
    </body>
</html>

The ieframe.dll resources are a point of interest. I am not sure how the server is able to detect the embedded instance of IE :unsure:...

Any suggestions? Here is a basic outline of the script:

#include <IE.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

Main()

While True
    Sleep(1000)
WEnd

Func Main()
    ; Create GUI
    $hGUI = GUICreate("", $GUI_WIDTH, $GUI_HEIGHT, $iLeft, $iTop, $WS_POPUP)
    $oIE = _IECreateEmbedded()
    ;$oIE = _IECreate() ; This works, but it is not embedded in the GUI
    GUICtrlCreateObj($oIE, 0, 0, $GUI_WIDTH, $GUI_HEIGHT)
    GUISetState()

    ; Navigate to the URL and authenticate
    _IENavigate($oIE, $URL)
EndFunc

Thank you for the advice in advance!


A cross-platform implementation of the AutoIt language

My contributions to the AutoIt Community ##AutoIt at freenode, real-time chat

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@TheDcoder
In the Help file it is stated to set the style $WS_CLIPCHILDREN to the GUI, since there may be visualization issue without that style.
Does the script return any error after functions calling? :)


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    I'm here to ask, and from your response, I'd like to learn.
    By my knowledge, I can help someone else, and "that someone" could help in turn another, and so on.

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On 5/2/2019 at 3:04 PM, FrancescoDiMuro said:

In the Help file it is stated to set the style $WS_CLIPCHILDREN to the GUI, since there may be visualization issue without that style.

It did indeed help! Instead of the white blank page it did show an error when I added the style: "Navigation was cancelled" (or something along those lines).

What really fixed the issue was navigating to about:blank before performing any other actions (including navigation), so the working code looks a bit like this:

#include <IE.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

Main()

While True
    Sleep(1000)
WEnd

Func Main()
    ; Create GUI
    $hGUI = GUICreate("", $GUI_WIDTH, $GUI_HEIGHT, $iLeft, $iTop, $WS_POPUP + $WS_CLIPCHILDREN)
    $oIE = _IECreateEmbedded()
    ;$oIE = _IECreate() ; This works, but it is not embedded in the GUI
    GUICtrlCreateObj($oIE, 0, 0, $GUI_WIDTH, $GUI_HEIGHT)
    GUISetState()

    ; Initialize by navigating to about:blank
    _IENavigate($oIE, 'about:blank')

    ; Navigate to the URL and authenticate
    _IENavigate($oIE, $URL)
EndFunc

Navigating to about:blank was indeed mentioned in the helpfile, but it only stated that we "must therefore use _IENavigate() to navigate this browser to 'about:blank' after it has been embedded into the parent application and before you attempt any operations that rely on having a document loaded (e.g. _IEBodyWriteHTML())". I did notice it initially when I was writing code, but I decided to navigate directly to the URL since I did not have to perform any operations relying on having a document loaded... now guess other operations are effected too :think:

 

On 5/2/2019 at 6:22 PM, Danp2 said:

Could the issue be the result of the embedded browser version using a very old version of IE? I vaguely recall a thread where you can adjust this, but you'll need to locate it on your own. 😉

Not really sure about that as I am pretty sure only one version of IE is present in an installation of Windows. Thanks for the tip but I have fixed my issue by navigating to about:blank first :)


A cross-platform implementation of the AutoIt language

My contributions to the AutoIt Community ##AutoIt at freenode, real-time chat

3fHNZJ.gif

Spoiler

If I have hurt or offended you in anyway, Please accept my apologies, I never (regardless of the situation) intend to do that to anybody.

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11 minutes ago, TheDcoder said:

I did notice it initially when I was writing code, but I decided to navigate directly to the URL since I did not have to perform any operations relying on having a document loaded... now guess other operations are effected too :think:

Exactly!
It doesn't seem to affect any other "action" less the automatic navigation to the about:blank; by the way, happy to have helped (even if a little bit) :)


Click here to see my signature:

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Thoughts:

  • I will always thank you for the time you spent for me.
    I'm here to ask, and from your response, I'd like to learn.
    By my knowledge, I can help someone else, and "that someone" could help in turn another, and so on.

/*--------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/

ALWAYS GOOD TO READ:

 

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LabelAnim(' . .') LabelAnim(' . . .') LabelAnim(' . . . OK') Sleep(20) Else LabelAnim(' .') LabelAnim(' . .') LabelAnim(' . . .') GUICtrlSetColor($LabelStatus, $COLOR_RED) LabelAnim(' . . . ERROR') UpdateLogFile() EndIf Else ; MsgBox(0, "Wrong extension", "Extension of file [" & $sFileName & "] is [" & $sExt & "] and not in" & @LF & "[" & $ExtsPreview & "]" & @CRLF) ConsoleWriteError("Extension of file [" & $sSourceFile & "] is [" & $sExt & "] and not in [" & $sPattern & "]" & @CRLF) ; Terminate() LabelAnim(' .') LabelAnim(' . .') LabelAnim(' . . .') GUICtrlSetColor($LabelStatus, $COLOR_RED) LabelAnim(' . . . Wrong Extension') UpdateLogFile() EndIf Next ; Retrieve the file size (in bytes) $iFileSize = FileGetSize($sFileLogPath) ConsoleWrite("FileLog size: " & $iFileSize & @LF) If $iFileSize < $LogDefaultSize Then FileDelete($sFileLogPath) ElseIf $iFileSize > $LogDefaultSize Then FileMove($sFileLogPath, @WorkingDir, $FC_OVERWRITE) EndIf GUICtrlSetData($Label, "Converting complete") Sleep(10) EndFunc ;==>MainLoop Func LabelAnim($Result) GUICtrlSetData($LabelStatus, 'Converting' & $Result) Sleep(12) EndFunc Func RemoveExt($Input) Local $ExtArray = StringSplit($Input, ".") Return StringReplace($Input, "." & $ExtArray[$ExtArray[0]], "", -1) EndFunc Func GetFileName($Input) Local $PathArray = StringSplit($Input, "\/") Return $PathArray[$PathArray[0]] EndFunc ;--------------------------------------------------------------- ;- Creating file in @tempdir ;--------------------------------------------------------------- Func WriteLogFile() ; Create a constant variable in Local scope of the filepath that will be read/written to. $ScriptNameWoExt = RemoveExt(GetFileName(@ScriptName)) $sFileLogPath = (@TempDir & '\' & '_' & $ScriptNameWoExt & '_errorlog_' & @YEAR & '_' & @MON & '_' & @MDAY & '_' & @HOUR & '_' & @MIN & '_' & @SEC & '_.txt') If FileExists($sFileLogPath) Then FileDelete($sFileLogPath) EndIf ; Create a temporary file to write data to. If Not FileWrite($sFileLogPath, "ImageMagick converter (" & $sIMConv & ") can't convert these files:" & @CRLF) Then MsgBox($MB_SYSTEMMODAL, "", "An error occurred whilst writing the temporary file.") Return False EndIf EndFunc ;--------------------------------------------------------------- ;- Update log file in @tempdir ;--------------------------------------------------------------- Func UpdateLogFile() ; Open the file for writing (append to the end of a file) and store the handle to a variable. Local $hFileOpen = FileOpen($sFileLogPath, $FO_APPEND) If $hFileOpen = -1 Then MsgBox($MB_SYSTEMMODAL, "", "An error occurred whilst writing the temporary file.") Return False EndIf ; Write data to the file using the handle returned by FileOpen. FileWriteLine($hFileOpen, ($sFileName & $sExt)) Sleep(20) ; Close the handle returned by FileOpen. FileClose($hFileOpen) EndFunc ;--------------------------------------------------------------- ;- Enhanced Progress widget ;--------------------------------------------------------------- Func CreateProgress($x, $y, $w, $h, $Label="") Dim $Progress[2] $Progress[0] = GuiCtrlCreateProgress($x, $y, $w, $h) ; this is progress bar $Progress[1] = GuiCtrlCreateLabel("---", $x+0, $y-21, '', '', $SS_RIGHT) ; this is percentage label GUICtrlSetFont($Progress[1], 11, 500, 0, "") GUICtrlSetBkColor($Progress[1], $GUI_BKCOLOR_TRANSPARENT) Return $Progress EndFunc Func UpdateProgress($ProgressID, $Percent, $Label="") GUICtrlSetData($ProgressID[0], $Percent) GUICtrlSetData($ProgressID[1], $Label & Round($Percent, 1) & "%") EndFunc Func _IsChecked($idControlID) Return BitAND(GUICtrlRead($idControlID), $GUI_CHECKED) = $GUI_CHECKED EndFunc ;==>_IsChecked Func Terminate() If WinGetHandle('') <> $hGUI Then HotKeySet('{ESC}') Send('{ESC}') HotKeySet('{ESC}', '_Close') Return EndIf GUIDelete() Exit EndFunc ;==>Terminate Exit(0) the problem caused by this area:
      Case $ExtractAlpha or $ExtractBlue If _IsChecked($ExtractAlpha) or _IsChecked($ExtractBlue) Then GUICtrlSetState($inpVal, $GUI_ENABLE) Else GUICtrlSetState($inpVal, $GUI_DISABLE) EndIf if I remove "or $ExtractBlue" and "or _IsChecked($ExtractBlue)" the input field is not flashing.
      p.s.: also my button don't work if I use OR for the "Case" condition.
    • By nooneclose
      Why can I not click on either of my input fields?
      #Region ### START Koda GUI section ### Form= Global $Form1 = GUICreate("Form1", 730, 437, 192, 124) ;GUISetFont(14, 800, 0, "MS Sans Serif") GUISetBkColor(0xC0DCC0) Global $Label1 = GUICtrlCreateLabel("Enter your Password. UserName is auto filled", 62, 40, 604, 41, $SS_CENTER) GUICtrlSetFont(-1, 26, 800, 0, "MS Sans Serif") Global $Label2 = GUICtrlCreateLabel("User Name:", 120, 130, 604, 31, $SS_LEFT) GUICtrlSetFont(-1, 20, 800, 0, "MS Sans Serif") Global $Label3 = GUICtrlCreateLabel("Password:", 135, 210, 604, 31, $SS_LEFT) GUICtrlSetFont(-1, 20, 800, 0, "MS Sans Serif") Global $Input1 = GUICtrlCreateInput(@UserName, 274, 130, 185, 32) GUICtrlSetFont(-1, 14, 800, 1, "MS Sans Serif") Global $Input2 = GUICtrlCreateInput("Password", 274, 210, 185, 32, $ES_PASSWORD) GUICtrlSetFont(-1, 14, 800, 0, "MS Sans Serif") Global $OK = GUICtrlCreateButton("OK", 274, 270, 185, 57) GUICtrlSetFont(-1, 20, 800, 0, "MS Sans Serif") GUISetState(@SW_SHOW) #EndRegion ### END Koda GUI section ### While 1 $nMsg = GUIGetMsg() Switch $nMsg Case $GUI_EVENT_CLOSE Exit Case $OK Global $UserName = GUICtrlRead($Input1) Global $PassWord = GUICtrlRead($Input2) ExitLoop EndSwitch WEnd ; Delete the GUI window GUIDelete()  
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