Need help debugging GUIRichEdit.au3 statements

[qwert]

I'm having difficulties with the GUIRichEdit.au3 UDF

It seems to have gone through some evolutionary changes over the years and at least a couple of the streaming functions have problems.  I've entered a bug report on ToFile.  But others, I just can't follow. 

For example, can someone experienced with these functions shed light on the meaning of this statement:

    Local $iWparam = ($s == "{rtf" Or $s == "{urtf") ? $SF_RTF : $SF_TEXT

It's in Func _GUICtrlRichEdit_StreamFromVar($hWnd, $sVar)
 

Usually, when I encounter a question mark character, it means that something couldn't be interpreted ... like a character from another character set.  But I see several uses of question marks in StringRegExp, so maybe the above use has meaning.  But, I've never typed one in, myself.

Also, is an original copy of the UDF available for inspection? ... a copy from before it was added to Include?

Thanks for any help.

 

[BrewManNH]

Local $iWparam = ($s == "{\rtf" Or $s == "{urtf") ? $SF_RTF : $SF_TEXT 

That's a statement using the ternary operator that's in the newest versions of AutoIt. It's a shortened version of an If/Then/Else statement.

What that statement is saying is if $s is equal to "{rtf" or $s is equal to "{urtf" then $iWparam will be assigned the value of $SF_RTF, if neither of those comparisons are true then $iWparam will be assigned the value of $SF_TEXT, and it's a case sensitive string comparison.

 

NOTE: I don't know if you'll be able to find a pre-include version of the RichEdit UDF, but you can certainly find earlier versions of it in the archived versions of AutoIt. Just find when it was added to the standard UDFs and find that version in the archives. 

Edited July 12, 2014 by BrewManNH

[qwert]

Thanks, BrewManNH.  It now makes sense.

I guess the time to debate 'ternaries' has passed ... but it's sad to see the cryptic quality they inject into what is otherwise a refreshingly forthright and readable language.

Anyway, the problem I'm chasing appears to be related to the EM_STREAMIN message calls.  I'm streaming rich content from a variable and I'm getting a "transformed" result ... the biggest problem of which is the insertion of an unwanted/unneeded font, MS Shell Dlg.

I've attached an example, if anyone happens to have ideas.  I'm testing alternative methods.

 

[Melba23]

qwert,

 

I guess the time to debate 'ternaries' has passed

Yup!

 

the cryptic quality they inject

Only if you have never seen them before - once you understand the ternary syntax [i.e. (test) ? (true) : (false) ] is it any different to using other operators? I suggest <> and /= are also pretty cryptic the first time you come across them.

 

a refreshingly forthright and readable language

At least we agree on something!

M23

[qwert]

I suppose.  I must have skipped that chapter in my CS courses.  I think my aversion is due to the use of ? as an operator.

 

[i.e. (test) ? (true) : (false) ]

 

IMO, anything else ... like || ... or / ... would have been a better choice.  '?' rattles too many neurons in the brain.

But we make do with QWERTYUIOP keyboards and ASCII Control Codes, so maybe it's no worse. [shrug]

 

[BrewManNH]

The ? usage as the ternary operator is used in other languages and written the same way. It's just keeping AutoIt consistent with other languages so the learning curve wouldn't be steep.

[Richard Robertson]

Yeah. Ternary is actually intuitive. Read it as

question ? yes : no