You can find the code on the PPP Google Group, here: https://groups.google.com/forum/#!topic/ppp-public/2_B1w8V0DKw
. I've attached the .cpp file and also the .txt file I'm using to my posts there. The latest updated one is on the most recent post. I made multiple posts due to the lack of an "edit" button.
There's probably no need to say what I need help with since I've already said it on that thread. But I'll also quote it here just in case:
I wrote the code, but when I tested it out, I found that I was weird values in the output textbox. I ran it in the debugger and found that maybe my fill_map function isn't being called.
Could someone please tell me what the problem might be and how I should fix it? How do I make sure fill_map() is called before the callbacks are called? Should I put the map in a separate class so that it's independent of Currency_converter_window objects? Since right now I can only call after an object of the class has been initialized and at that point it's already too late (since a callback has already been called).
Okay, another update.
I made some more changes, but I still can't get the std::map to be filled. What am I doing wrong here? Please help. With the single callback that should check for the label on the buttons as well. Thanks in advance.
The reason I didn't post the code here and instead just linked the Google Group like that is because this post would get too long if I posted the code here. So please forgive me (if anyone on here doesn't like that I linked it here instead of just posting the code here).
If possible, I also want some help on the "one-for-all-buttons" callback I wrote. Preferably from someone who's familiar with Dr. Stroustrup's GUI interface library for the book (PPP2). The reason I ask is because I had a funny result when I tried to use it.
I did the map-filling function like this:
void conversion_rate_mapping::fill_map(std::istream &is, std::map<std::string, double> &map)
while (is >> rate_id >> rate)
map[rate_id] = rate;
And it finally filled the map successfully.
But now I ran across another problem: The output is shown as an integer with the fractional part truncated. How do I fix that?
Edit: Okay, I've fixed everything except for the "all-purpose callback". And I also need to know if there's a way to reset the program after catching an exception in main(). Right now I throw a runtime_error exception if the user either doesn't enter an amount to convert from or enters something that has anything other than a number in it. I want to recover from the exception after I catch it. What should I do?