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Welcome back.

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In the previous lesson we saw how to search for in on your records and how to set break.

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In this lesson we are going to learn the third way which is to examine the casting and then to celebrate

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points on the address.

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So let's begin

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Randy correct me program from the excessive for the BJP

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and then take on mutton run.

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Press F nine to run to the entry point.

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And then run again.

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O F nine and the window program starts So now enter anything.

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And then click on button check and you will get a message box showing up showing the wrong zero key

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message.

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So I just point immediately click on the post button here.

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And then from here you go through the costing.

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It is very important to clean the pass button then go to the to say it passed but then it passed the

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debugger.

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So now you go to the casting and click on it.

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And here you will see a list of all the calls that has been made since the program started.

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And you can trace it.

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The first call was made by system.

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Then the second call also system and so on and you can see all the way up here and there is one call

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which is made by the user my new which is this one here from two.

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So these are modules of under the column from and is making a call to the system so this was the last

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call that came from the user my you guessed before the message box was shown.

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So this is the one we want to trace.

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So you can select this correctly and follow from so he can follow to be used to follow this column is

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right.

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You can follow from his to follow the from column which is this address.

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So the one we won at this point is from.

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So click follow from any region to the location of the car.

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So the address normally will be the one just before the address shown here which is this one.

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So this is the last call that was made from the user space to the system so we can see it is correct.

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This was the message box I was showing the error message box and the car is a call to show this error

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message.

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And now you can put your breakpoint anyway in the usual way and examine the code.

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So this is how you can use the stack to search for the to trace the call that produced the error message.

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And don't confuse this costing with the stack down here the state down here is the temporary memory

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location used by each of the calls but this can't stay is the history of calls history or the calls

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that has been made by the program so that's all for this lesson.

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Thank you for watching.