main.cpp in creating new QWidget project

Hi Guys!

I'm a little bit confused about this one. Can someone explain to me what is the main purpose of the automatically generated main.cpp when creating new QWidget project? Can I delete the main.cpp file? Or i need some modifications first before deleting the main.cpp?

Thanks in advance guys! I'm new in Qt!

This is the structure:

-Trial.cpp
-Main.cpp

-Trial.h

-Trial.ui

The main purpose of the code in main.cpp, which is just a main() function, is exactly the same as the main() function in any C++ program: its the starting point for running your program.

Quote:

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Can I delete the main.cpp file?

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You can delete the main.cpp file but, as ChrisW67 said, you can't delete the main() function. That's the entry point to your program. You can move that function to another file (like Trial.cpp), but it has to be somewhere and it has to have the name main() with the correct arguments and return value.