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NiTroGen

COM using ByRef

6 posts in this topic

#1 ·  Posted (edited)

From the chm help, it says

Limitations on COM Events in AutoIt

Some Objects (like the 'WebBrowser') pass arguments to their Event Functions 'by reference'. This is intended to allow the user change these arguments and passing it back to the Object.  However, AutoIt uses it's own variable scheme, which is not compatible to COM variables.  This means that all values from Objects need to be converted into AutoIt variables, thus loosing the reference to the original memory space.  Maybe in the near future we can solve this limitation for you !

So in case I really need to call a COM object event using ByRef. Any clues?

eg. I want to block some URL opened by embedded IE by checking the url at BeforeNavigate event.

Func IEEvent_BeforeNavigate($url, $Flags, $TargetFrameName, $PostData, $Headers, $Cancel)
          ;Many Checking code
EndFunc

**Adding "ByRef" before "$Cancal" won't work

Any suggestions are welcome :)

Edited by NiTroGen

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Best suggestion I have is to inject Javascript into the web page that does what you want. See _IEHeadInsertEventScript

Dale


Free Internet Tools: DebugBar, AutoIt IE Builder, HTTP UDF, MODIV2, IE Developer Toolbar, IEDocMon, Fiddler, HTML Validator, WGet, curl

MSDN docs: InternetExplorer Object, Document Object, Overviews and Tutorials, DHTML Objects, DHTML Events, WinHttpRequest, XmlHttpRequest, Cross-Frame Scripting, Office object model

Automate input type=file (Related)

Alternative to _IECreateEmbedded? better: _IECreatePseudoEmbedded  Better Better?

IE.au3 issues with Vista - Workarounds

SciTe Debug mode - it's magic: #AutoIt3Wrapper_run_debug_mode=Y Doesn't work needs to be ripped out of the troubleshooting lexicon. It means that what you tried did not produce the results you expected. It begs the questions 1) what did you try?, 2) what did you expect? and 3) what happened instead?

Reproducer: a small (the smallest?) piece of stand-alone code that demonstrates your trouble

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@Dale

Correct me if I am wrong. _IEHeadInsertEventScript seems working only after the page has been loaded completely.

I plan to override the javascript function "window.open" before complete page loading. Any clue?

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Correct, _IEHeadInsertEventScript can't be used until the page is loaded. window.open typically would not happen until the page is loaded either however... what is invoking window.open?

Dale


Free Internet Tools: DebugBar, AutoIt IE Builder, HTTP UDF, MODIV2, IE Developer Toolbar, IEDocMon, Fiddler, HTML Validator, WGet, curl

MSDN docs: InternetExplorer Object, Document Object, Overviews and Tutorials, DHTML Objects, DHTML Events, WinHttpRequest, XmlHttpRequest, Cross-Frame Scripting, Office object model

Automate input type=file (Related)

Alternative to _IECreateEmbedded? better: _IECreatePseudoEmbedded  Better Better?

IE.au3 issues with Vista - Workarounds

SciTe Debug mode - it's magic: #AutoIt3Wrapper_run_debug_mode=Y Doesn't work needs to be ripped out of the troubleshooting lexicon. It means that what you tried did not produce the results you expected. It begs the questions 1) what did you try?, 2) what did you expect? and 3) what happened instead?

Reproducer: a small (the smallest?) piece of stand-alone code that demonstrates your trouble

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I want to disable some javascript pop up when loading a page.

Since autoit doesn't support COM ByRef variable, I can't cancel the popup by _IEEvent_Newwindow. Then I plan to override javascript window.open function instead.

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#6 ·  Posted (edited)

From AutoIt directly I have no other ideas...

Perhaps there is some way to get there indirectly with vb script:

$oSC = ObjCreate("ScriptControl")

$oSC.language = "VBScript" ; or Javascript (or perlscript...)

$oSC.eval(VBScript-code)

Dale

Edit: typos

Edited by DaleHohm

Free Internet Tools: DebugBar, AutoIt IE Builder, HTTP UDF, MODIV2, IE Developer Toolbar, IEDocMon, Fiddler, HTML Validator, WGet, curl

MSDN docs: InternetExplorer Object, Document Object, Overviews and Tutorials, DHTML Objects, DHTML Events, WinHttpRequest, XmlHttpRequest, Cross-Frame Scripting, Office object model

Automate input type=file (Related)

Alternative to _IECreateEmbedded? better: _IECreatePseudoEmbedded  Better Better?

IE.au3 issues with Vista - Workarounds

SciTe Debug mode - it's magic: #AutoIt3Wrapper_run_debug_mode=Y Doesn't work needs to be ripped out of the troubleshooting lexicon. It means that what you tried did not produce the results you expected. It begs the questions 1) what did you try?, 2) what did you expect? and 3) what happened instead?

Reproducer: a small (the smallest?) piece of stand-alone code that demonstrates your trouble

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