error checking 2.ahk

#SingleInstance,Force
;**********Example 1****************************
If (0){
	try {  ; Attempts to execute code.
		HelloWorld()
		MakeToast()
	}catch e { ; Handles the first error/exception raised by the block above.
		MsgBox, An exception was thrown!`nSpecifically: %e%
	}
}
HelloWorld()  { ; Always succeeds.
	MsgBox, Hello, world!
}

MakeToast()  { ; Always fails.
	throw A_ThisFunc " is not implemented, sorry"  ; Jump immediately to the try block's error handler:
}

;**********Example_2*********************************************
If (0){
	try{
		obj := ComObjCreate("ScriptControl")
		obj.ExecuteStatement("MsgBox ""This is embedded VBScript""")
		;~ obj.InvalidMethod() ; This line produces a runtime error.
	} catch e {
		MsgBox, 16,, % "Exception thrown!`n`nwhat: " e.what ;Note the e is an object
			. "`nfile: " e.file
			. "`nline: " e.line
			. "`nmessage: " e.message
			. "`nextra: " e.extra ; For more detail about the object that e contains, see Exception().
	}
}

;********************Example_3***********************************
If (0){
	try	SomeFunction()
	catch e
		MsgBox % "Error in " e.What ", which was called at line " e.Line " and message " e.message
	
	SomeFunction() {
		throw Exception("this really sucked", -1)
	}
}

;********************Example_4* Disregarding Errors**********************************
If (0){
	ComObjError(1) ;This is optional but not recommended
	pwb:=WBGet()
	doo:=pwb.getElementsByTagName("doo").item[0].outerhtml
	dah:=pwb.getElementsByTagName("dah").item[0].outerhtml	
	dah:=pwb.getElementsByTagName("fda").item[0].outerhtml	
	dah:=pwb.getElementsByTagName("dfh").item[0].outerhtml	
}