Problem : Works only if I have an alert

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news.microsoft.com - 11 Aug 2003 18:28 GMT

I have posted the code below, please help me how can I make the window
object understand the new object created without using alert or
settimeout(). Also How to check a method exists in a object? it works only
if I have a property in that object then its working fine, how to check an
object's methods? I am using property"(Component1.Exists)", but I need to
find out a method or some way to know that the object is loaded.
if(Component1) always not null in this case, so I am not sure is that the
right way to check whether object is loaded or not. I would really
appreciate if somebody can help me.

thanks,

Rajan.

Code :

<BODY MS_POSITIONING="GridLayout">
<OBJECT id="Component1"
classid="http://MachineName/Web.UI/Tem/Analysis.dll#UserControls.ucTask"
VIEWASTEXT>
</OBJECT>
<SCRIPT language="javascript">
if (Component1.Exists)
{
run();
}
else
{
install();
location.reload();

}
function run()
{
Component1.SetCookie(cookieName, cookieValue, cookieDomain, cookiePath);
Component1.SetToken(tokenSecurityHandle, tokenStateHandle, tokenUserId);
Component1.DoSomething();
}

function install()
{
var objectTagString;
// document.write("<OBJECT id=InstallerControl
classid=http://MachineName/Web.UI/Tem/InstallerControl.dll#InstallerControl.
UserControl1 VIEWASTEXT></OBJECT>");
objectTagString = document.createElement("<OBJECT id='InstallerControl'
classid='http://MachineName/Web.UI/Tem/InstallerControl.dll#InstallerControl
.UserControl1' VIEWASTEXT></OBJECT>");
document.body.appendChild(objectTagString);
// This works
alert("Some Message");
InstallerControl.InstallMsi();
// or this works
window.SetTimeout("InstallerControl.InstallMsi()", 2000);
}

</SCRIPT>
<SCRIPT src="scripts/JDAFrameworkReference.js"></SCRIPT>
</BODY

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bruce barker - 12 Aug 2003 03:20 GMT

IE creates, downloads if necessary, and intializes com object async, there
is no way for client code to safely call the com object without using a
setTimeout and checking the readyStatus (which is used to determine how
ready a com object is). if the user disables active/x or refuses the
download, then the object will never be ready.

a common method used by flash and others is to fire an event when the object
is ready. client code can catch the event.

normally you do sometime like this:

<script>

run();

function run ()
{
if (window.Component1 && window.Component1.readyState == 4))
{
Component1.SetCookie(cookieName, cookieValue, cookieDomain,
cookiePath);
Component1.SetToken(tokenSecurityHandle, tokenStateHandle,
tokenUserId);
Component1.DoSomething();
}
else
{
window.setTimeout("run()",1);
}
</script>

> I have posted the code below, please help me how can I make the window
> object understand the new object created without using alert or
[quoted text clipped - 39 lines]
> var objectTagString;
> // document.write("<OBJECT id=InstallerControl

classid=http://MachineName/Web.UI/Tem/InstallerControl.dll#InstallerControl.

> UserControl1 VIEWASTEXT></OBJECT>");
> objectTagString = document.createElement("<OBJECT id='InstallerControl'

classid='http://MachineName/Web.UI/Tem/InstallerControl.dll#InstallerControl

> .UserControl1' VIEWASTEXT></OBJECT>");
> document.body.appendChild(objectTagString);
[quoted text clipped - 8 lines]
> <SCRIPT src="scripts/JDAFrameworkReference.js"></SCRIPT>
> </BODY

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Problem : Works only if I have an alert

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