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Hello guys,

I can't understand what does the question want, to write appropriate code for it. Would you please read it to find out what it exactly wants?

Modify the Link class from 17.10.1 to...

Thank you all very much. :)

Thank you for your explanations. But I asked about not assigning the returned value of a function.
For example if we have:

int f() { return 6; }

and in main() function we use it:

int...

Thank you.

Is it this way just for functions returning a pointer or also for other returning types please?

Would you please have a look again at that book?
In page 617 he has written this:


Link * p = find(norse_gods,"Zeus");
if(p) {
erase(p);
insert(greek_gods,p);
}

You are right.
At the third read, finally I found it has no mistakes. Thank you very much. :)
Sorry if I took your time.

Hi,

I read some part a C++ book explaining lists. But I think the author has mistaken in that. If possible, please read section 17.9.3. An example: Lists, of this link...

Yes. What you said were good ideas. If I still insist on putting that square root sign on that button I may be have to use one of those ideas.

Thank you very much.

I tested both of L"√" and L'√'. Both gave me two errors. They are in below.

Error 8 error C2664: 'Graph_lib::Button::Button(Point,int,int,const std::string &,Graph_lib::Callback)' : cannot...

Excuse me, what does that 'L' mean? And for example for using that method should I use L"<√>", which leads to errors?

Thanks for the reply. I try to read it well.

Hello,

I'm trying to have a button marked by the sqrt sign, '√'.
I wrote below code and typed that sign by holding down "alt" and typing 251 using numpad. But result is the question mark instead...

OK. No problem. Thanks for the reply.

@Arjay:
> "Getting the system time and pausing (using clock() and sleep() or something else) is the trivial part."
All I need is that. I complete the rest of the code. Please offer simplest code...

Could you please give simplest code which uses this Fl::dd_idle?

OK guys. Thank you very much. But I still have one question:
Is there a possible way just using the materials that are taught in the book (until here, chapter 16) and also using sleep()/Sleep() and...

Thank you very much for your code.
But it's really beyond the scope the lessons I have been taught!
Please look, I'm at chapter 16 of that book. The pointers are in next chapter. And those...

Hello all,

For some reason I need to use of Fl::add_idle function. This site introduces it but doesn't offer an example of how to use it....

I can't understand that msdn examples :(

I also made a loop into void clock_hands() but same result. Sleep() takes to comma and is not good for my situation.
I don't know why I can't easily understand the msdn touts but I try to figure out...

The post #11 was for OReubens.

@GCDEF:
About the loop you are right. But as I said in my first post of this thread, "It is in its primary stages and has not been completed yet." I would want to...

@OReubens :

Thank you for your explanations.

What I got from your reply were:
1- Solving the exercise by the materials it has said is not possible. And it's the author's mistake that has had...

May you read the exercise once again please? The exercise is of the book Programming Principle and practice using C++, by Stroustrup.
If you were me, how would you solve the exercise so?

I don't know what is the case with the link but it works properly for me.
Anyway, the exercise no.6 says just what I wrote at first post of here: Make an "analog clock" that is, a clock ....

Thanks for the reply.
What do you mean by main GUI thread please? The main() function?
The exercise itself recommend to use of clock() and sleep(), but if you know any other good tool please tell...