How to Handle errors In IE.au3

[yadav]

Iam collectiing one form by using function _IEFormCollection(IE,0), if this form doesn't exist in that frame or document then IE.au3 will throw errors,how to catch and handle those errors,please send me the code for this,thanks.

[PsaltyDS]

Iam collectiing one form by using function _IEFormCollection(IE,0), if this form doesn't exist in that frame or document then IE.au3 will throw errors,how to catch and handle those errors,please send me the code for this,thanks.

Welcome to AutoIt!

In most cases the functions indicate errors by return value and the @error macro when things don't work. The function _IEFormCollection($oIE, 0) will do both. It returns 0 instead of an object, and sets @error to some non-zero value. You can test the return value with IsObj(), and check @error with a straight IF:

#include <IE.au3>

$oIE = _IECreate("www.google.com")

$oForm = _IEFormCollection($oIE, 0)
If Not IsObj($oForm) Then MsgBox(16, "Error", "Failed to get form object.")

$oForm = _IEFormCollection($oIE, 1)
If @error Then MsgBox(16, "Error", "_IEFormCollection() returned @error = " & @error)

If you are looking for help with a specific error, please post code to replicate the error and/or the Console text from SciTE.