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THISBACK(function(parameter)) Error C2102 [message #37688]

Fri, 02 November 2012 18:05

nejnadusho
Messages: 60
Registered: October 2012

Member

Hi,

I am trying to pass a THISBACK(function(parameter)) and it gives me an error.

                 int x = 10;
                 //On click event new user data submition
		tab1.userDataButton <<= THISBACK(ClickUserDataButton(x));

Quote:

C:\MyApps\SeniorProject\Admin.cpp(26) : error C2102: '&' requires l-value

If the function does not take parameters it works otherwise it doesn't.
Why?

Thank you very much.

nejnio

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Re: THISBACK(function(parameter)) Error C2102 [message #37689 is a reply to message #37688]

Fri, 02 November 2012 19:48

dolik.rce
Messages: 1789
Registered: August 2008
Location: Czech Republic

Ultimate Contributor

Hi nejnio

Thisback take reference to the function, with parameter passed to the function as another parameters to the THISBACK# macro. So it should be called like this:

THISBACK(function1)
THISBACK1(function2,123)
THISBACK2(function3,123,"param")
...

I'm not even sure how it could even work for you with the one parameter function Smile

Probably its return type was matching something that THISBACK accepts...

Have a look at the reference and example programs, perhaps also reading and trying out the tutorial and figure out how ts might help Wink

I understand that some poeple (me included Smile

) prefer to just play with the toolkit and figure out how it works by themselfs, but U++ contains so many unusual concepts and has quite steep learning curve, so following the tutorial and reading the manuals can help (and save you some frustration Smile

).

Best regards,
Honza

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Re: THISBACK(function(parameter)) Error C2102 [message #37690 is a reply to message #37688]

Fri, 02 November 2012 20:33

nejnadusho
Messages: 60
Registered: October 2012

Member

Thank you very much Nonza!

Quote:

Honza wrote on Fri, 02 November 2012 14:48

I'm not even sure how it could even work for you with the one parameter function Probably its return type was matching something that THISBACK accepts...

I just want to clarify that it does not work with one or more parameters, in the the way I was trying.

Best,
nejnio

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