[Moved] Document/View application

CapnMikey

That seems to have come from copying and pasting. The definitions are okay in my files.

andre

[quote author="CapnMikey" date="1315495836"]That seems to have come from copying and pasting. The definitions are okay in my files.[/quote]
Then please update your previous post to reflect the actual state of your code.

CapnMikey

Line 15 in Information.h should be line 25 in MainWindow.h. Sorry about the mixup.

andre

[quote author="CapnMikey" date="1315496093"]Line 15 in Information.h should be line 25 in MainWindow.h. Sorry about the mixup.[/quote]
Please just use the Edit button next to your post to modify it and fix the mixup.

CapnMikey

Okay, the code above has been modified.

Thanks for pointing out the edit button.

giesbert

Your struct is named information, but the definition in mainwindow.h is Information. C++ is case sensitive...

CapnMikey

I corrected the case error as well (see post above). I still get the same error message.

andre

Did you also note the remark I posted above?

[quote author="Andre" date="1315495737"]Oh, and in your MainWindow, you have a pointer to an Information instance, while you do not seem to be creating an instance and trying to assign to it as if it is a normal member variable. [/quote]

CapnMikey

I added line 13 to the MainWindow.cpp above, but I still get the same error message. Is this what you are referring to?

andre

Either, change line 20 in MainWindow.h to
@
Information info;
@
and remove line 13 from MainWindow.cpp, or

change line 20 in MainWindow.h to
@
Information* info;
@
and change lines 15-17 in MainWindow.cpp into:
@
info->a = "A";
info->b = "B";
info->c = "C";
@
and insert this line as line 24:
@
delete info;
@

In either case, get yourself a good book on C++ to get yourself a solid introduction into the language you are working with. Qt does not shield you from having to learn C++.

CapnMikey

Andre (and everyone else)-

Thanks for your help. The first option compiled correctly. Having seen something that works I hope I can figure it out from here.

Your last suggestion is appropriate. However, I have a large stack of books on C++ programming. The problem is the definition of the word "good". I learned chemical thermodynamics by using a large stack of textbooks. None of them were particulary good. But, where one authors explanation failed another author provided a more thorough explanation. I was able to piece it together that way. I haven't found that approach to work well for understanding C++.