Error faced when running a code in qt

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I keep getting this error when I try running a code that I wrote in Qt.
I have attached the link to the screenshot of the error.
The screenshot of the error
Link to the code repository: GitHub - UA12/Stopwatch[^]

What I have tried:

I have been trying to understand what the problem is but haven't been able to do so since I am new to Qt.

Posted 28-Nov-18 9:07am

UA12

Updated 29-Nov-18 0:24am

v2

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Rick York · Accepted Answer · 2018-11-28T10:08:00

Solution 1

This error is not unique to Qt or any other framework. It is a linkage error meaning the methods noted can not be found. Often you will think you have the method implemented for a class but your function signature differs from the header's definition. It appears that you need to correctly implement secChanges, minChanges, and hrsChanges.

Posted 28-Nov-18 10:08am

Rick York

Comments

UA12 29-Nov-18 6:27am

Can you please help me detect the error. I am attaching the Github link.
https://github.com/UA12/Stopwatch

CPallini · Accepted Answer · 2018-11-28T20:57:00

Solution 2

As Rick stated, this is a common linker error about missing methods.
Now, looking at your code, you defined onsecChanges, onminChanges and onhrsChange methods, but you are apparently calling (see the error messages) secChanges, minChanges and hrsChanges. Can you spot the name mismatches? You have to add a 'on' to the method calls.

Posted 28-Nov-18 20:57pm

CPallini

v3

Comments

UA12 29-Nov-18 3:10am

Thankyou very much

CPallini 29-Nov-18 3:28am

You are welcome.

UA12 29-Nov-18 6:14am

This is the link to my GitHub repository for the code. Can You please detect the error.
https://github.com/UA12/Stopwatch

KarstenK · Accepted Answer · 2018-11-28T21:09:00

Solution 3

This kind of linker error are the result of missing implementation of these functions. Often is missing implementation, some typo or wrong scope (class or private) the reason. Goto to the place where the functions are implemented and fixit.

Posted 28-Nov-18 21:09pm

KarstenK

Comments

UA12 29-Nov-18 6:20am

Can you please help, I am attaching the GitHub repository link. I will be great full.
https://github.com/UA12/Stopwatch