mshtml - access denied for Writeln()

  • Thread starter Thread starter sam
  • Start date Start date
S

sam

Hi

Just encountered a strange problem and wonder if it is a
bug ? I have the following piece of code....

try
{
IHTMLDocument2 MyDoc = (IHTMLDocument2
MyWebBrowser.Document;
IHTMLWindow2 MyWin = (IHTMLWindow2 ) MyDoc.open
("","_TEST_","","");

MyWin.document.writeln("line #1");
MyWin.document.writeln("line #2");
}
catch(Exception e)
{
MessageBox.Show(e.Message);
}

This opens the new WebBrowser, and writes the "line #1"
into it. But while writing the second line it throws an
exception "access denied"
Seems like I am allowed to access the "document" property
of the "IHTMLWindow2" only once.
If I try to access it again, I get this exception.

I found a work around.....
Basically I extract the MyWin.document into a variable of
IHTMLDocument2 and then invoke the writeln().
try
{
IHTMLDocument2 MyDoc = (IHTMLDocument2)
IWeb2.Document;
IHTMLWindow2 MyWin = (IHTMLWindow2 ) MyDoc.open
("","_TEST_","","");
IHTMLDocument2 MyDoc2 = (IHTMLDocument2)
MyWin.document;

MyDoc2.writeln("line #1");
MyDoc2.writeln("line #2");
}
catch(Exception e)
{
MessageBox.Show(e.Message);
}


This works, but it is not foolproof. if I try to access
MyWin.document again at some other time... eg when I
invoke the function again, I still get the exception.

Anybody any clues?

TIA
sam
 
Hi

Just encountered a strange problem and wonder if it is a
bug ? I have the following piece of code....
[...]

This works, but it is not foolproof. if I try to access
MyWin.document again at some other time... eg when I
invoke the function again, I still get the exception.

Anybody any clues?

TIA
sam
Click to expand...

Hi Sam,

You have to Wait for the document to load, to be able to write to it.
There's a OnLoadFinished Event on the IHTMLDocument. You should connect to
the event and only start your writing when this event ahs been fired.

Greets
Peter

--
------ooo---OOO---ooo------

Peter Koen - www.kema.at
MCAD MCDBA
CAI/RS CASE/RS IAT

------ooo---OOO---ooo------
 
im not sure without opening and testing it but its possible its because your
not setting the designMode property...

MyWin.designMode = "On";
 
Hi Peter,
You have to Wait for the document to load, to be able to
Click to expand...
write to it.

I dont think it is a load problem because if I do the
following then it works like a charm...
MyDoc2 = (IHTMLDocument2)MyWin.document;
MyDoc2.writeln("line #1");
MyDoc2.writeln("line #2");

The problem is if I EVER again try to access
MyWin.document, it gives me the "access denied" exception.

TIA
sam
 
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