Visual Studio to Internet Explore...

IE8 JScript Debugger - Under the Hood

2008-03-18T13:13:00Z

I have posted about the JScript Debugger Design for IE8 Developers Tools on the JScript Team blog ( here ). Hope it is nice read up for you. I would be writing more on Debugger very soon. Stay tuned....(read more)

JScript Debugger Functionality in IE8

2008-03-13T14:01:00Z

Deepak, Program Manager, from our JScript Team has blogged here in detail about the functionalities the Script Debugger in the IE8 Developer Tools provide. He has also links to the other resources like white paper etc in his blog. This would be interesting read for all the web developers looking at in built script debugger in IE8....(read more)

IE8 Beta1 is available

2008-03-07T10:21:00Z

IE8 Beta1 is now available here . It has remarkable script improvements in JScript performance. It also features handy JScript Debugger for developers. I will soon be writing more about JScript Debugger - what went into designing this debugger the way it is, features etc. So stay tuned. Mean while you can read up on what are few improvements related to performance ....(read more)

Passing more than one parameter to the script callback

2007-08-10T21:52:00Z

Passing more than one parameter to JScript function isn’t difficult at all after knowing how to pass the parameter. But there is only one trickier part here. ...(read more)

Using Return Value of the Script Callback

2007-08-10T21:48:00Z

To use the return value of the JScript Function we need to pass parameter VARIANT *pVarResult to the Invoke Method of the IDispatch. ...(read more)

Passing Parameter to the Script Callback

2007-08-10T21:42:00Z

What if one wants to call a function that takes parameter say alerter. ...(read more)

Script CallBack from COM

2007-08-10T21:27:00Z

what if one wants to call a function say a callback which is in JScript from COM? Lets see how to achieve this in this post...(read more)

Calling functions of COM object from JScript

2007-08-10T21:19:00Z

To be able to invoke functions on the instantiated COM function through JScript, we need to add the method to the ITest interface which is derived from IDispatch....(read more)

Interoperability of JScript with COM

2007-08-09T13:20:00Z

Recently I worked on using COM component in JScript. I couldn't find one stop solution or example for this and so thought for writing series of posts regarding this. I] Instantiating a COM class... ...(read more)

Debugging a script debugger

2006-04-19T19:51:00Z

Its kind of pain to debug a debugger. One thing for sure. If you want to debug VS debugger for C++,C# etc languages then it would be bit simple(I think) as everything takes place in VS itself. So its just question of attaching to another VS which is kind of well established method here. But when it comes to debugging a script debugger it gets hard. Debugging takes place through VS but actual engine runs in IE. So just attaching to VS doesn't solve the purpose. You have to attach to IE. Now things get complicated here. Reason IE is invoked by VS which you are already debugging. So you need to attach to this IE using some other version of the VS. Basically you need unregsiter RET csm.dll and register CHK csm.dll so that you don't face problem in attaching to IE which is invoked by VS.

So the final setup looks like this:

Unregister RET csm.dll using regsvr32 /u <path for RET csm.dll>

CHK VS has venus project in which you can set bp in script etc. Pressing F5 invokes IE and breaks at previosly set BP. (You will need to check off option from Tools -> Internet Options -> Advanced -> Disable Script Debugging to enable script debugging)

In RET VS you need to attach to IE and CHK VS.

And you are ready to debug script debugging. Happy Debugging!!

Building 2 at IDC

2006-04-14T06:39:00Z

The new building at IDC is ready and from monday it will be occupied. I got a chance to get glimpses of the building. Its looking great. Amazing colour combination. I liked use of bright colours. It feels so much energized there. Cafe is almost same as Building 1 but then apart from counters near wall they have come up with some counters in the middle of cafe as well. I am already happy with the cafe service here. We get so much of variety unlike so many other companies. Food quiality is much better. And now that cafe in building 2 would open from monday, it would give some more variety in the food. In all cafe is the place which will impress any visitor. There were ballons everywhere in the walkway between two buildings, some flowers decoration. and yummy cake. All in all it was looking very pleasant and cheerful atmosphere. Hope to see new faces, make new friends now.

Change in Blog Title

2006-04-01T12:46:00Z

Since I am going to work on Jscript Engine now, the blog is no longer solely for Object Test Bench. Hence Changing the name. I would be involved in Jscript debugging support and Intellisense. So now on expect blogs on experience about Jscript transitioning, problems faced, how we overcome them etc as well here.

Getting rid of un-necessary rebuild messages while working with OTB

2006-03-07T19:26:00Z

In VS2005, if you are trying to work with OTB and you think you are getting unnecessary rebuild messages or create instance in windows application is starting form itself, you can check

Tools -> Options -> Project and Solution -> General -> Show advanced Build configuration.

This should resolve all the above problems.

Interesting decision about the design

2006-02-06T12:17:00Z

Recently Neela reported down one interesting issue.

Consider a class class1 with following two methods:

public void test(String str)

public void test(String[] str)

Now if user creates object of class1 (say object1) on OTB and then selects method test(String) from the context sensitive menu and enters parameter as 'null' what should we do. In normal cases call like object1.test(null) is going to give compiling error as the call is ambiguous between method test(String) and test(String[]).

But we had two problems to think of.

1. User has specifically selected method and wants method test(String) to be executed with parameter null.

2. From debugger perspective it is just a call like debugger its just a call as test(null)

Hence we should somehow execute method test(String) or should fail the method with the error as ambigous call.

If we would have allowed successful execution of method it would mean to user that method test(String) when passed parameter as null would succeed and he/she would expect the same behaviour when he adds a code like object1.test(null); into the main method. But thats not true. So surely this was going to mislead and confuse user. Hence finally we decided to throw error as ambigous method call. With this now user knows that invocation of test(String) method with null parameter is not correct. (Though user can pass variable str of type String which is null)