Carriage return in exception message

[hobboy]

Code: Select all

try
{
	some_obj := ComObjCreate("ScriptControl1234")		
}
catch err
{
	; 0x800401F3 - Invalid class string
	if (err.Message = "0x800401F3 - Invalid class string")
		MsgBox % "No carriage return"
	
	if (err.Message = "0x800401F3 - Invalid class string`r")
		MsgBox % "With carriage return."
}

I was trying to match exception messages and found that I needed to include the carriage return `r in the string. Is this intentional?

[Masonjar13]

The = operator is a logical comparison. That is, if there is a return in a string, there must be a return to match it. = is case insensitive, however, but that is all.

If you don't wish to use the return in the check, you may do something like the following.

Code: Select all

try
{
    some_obj := ComObjCreate("ScriptControl1234")		
}
catch err
{
    ; 0x800401F3 - Invalid class string
    if (inStr(err.Message,"0x800401F3"))
        msgbox,,Error,Invalid class string.
}

[lexikos]

The message comes from calling FormatMessage with the HRESULT 0x800401F3. FormatMessage adds a line ending at the end of the message.

I found this...

Code: Select all

			if (buf[size-1] == '\n')
				buf[--size] = '\0';
				// probably also has '\r', but doesn't seem necessary to remove it.

I think it's strange that the author of this code would bother to remove \n but leave \r, although I think it's probably because the \r on its own is invisible in a MsgBox. Maybe I'll change it.

You should extract the error code and compare that, not the message. I think that the message depends on your system's UI language.

[hobboy]

Thanks, I'll probably extract the error code like masonjar13 does.