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Webbrowser Handle

Posted on 2008-10-03
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Last Modified: 2012-05-05
1.) How do i determine the default webBrowser?

2.) How can I determine if the Default webBrowser (Or any webbrowser for that matter) is active

3.) How can I get the handle of the browser?
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Question by:geocoins-software
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Expert Comment

by:ziolko
ID: 22636331
1)
to get default browser you have to check registry:
go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
and read "User Agent" value

alternatively you can check this key:
HKEY_CURRENT_USER\Software\Classes\http\shell\open\ddeexec\Application

2) what you mean active?

3) handle... you mean handle of window? (or should I ask all open windows)

ziolko.
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Author Comment

by:geocoins-software
ID: 22636414
>1.) and read "User Agent" value

what are the valid values?

>2) what you mean active?

Is the Default - webbowser open?  If not, is there a webbrowser opne?

>3) Handle of the webrowser window, so that I can enumerate the controls

thanks




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ziolko earned 500 total points
ID: 22636657
1)
user agnet string is part of header of http requests it identifies web client making call, of course since it's just a string it can be anything. but if web browser was installed correctly it should indicate what browser is default. more about UA strings can be found here:
http://msdn.microsoft.com/en-us/library/ms537503.aspx

2) this can be difficult if possible at all, you can try number of different tricks like enumerating processes and look for iexplorer.exe or firefox.exe or ... you can also enumerate all top level windows read it's caption and check if it contains sub-string like "mozzila fire fox" or "microsoft internet explorer".
but anyone can write it's own app place TWebBrowser and then none of those tricks will work.

3) same as 2)

ziolko.
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Author Comment

by:geocoins-software
ID: 22636744
Yeah, thats what I figured. Thanks!
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Expert Comment

by:ziolko
ID: 22636758
3) not to mention web browser with multiple tabs there's no guarantee that those tabs are window controls and have handles at all.

ziolko.
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