Basic construction of QT project

Default build mainwindow that will do . Step a little .

Use after creation Desktop5.12.9GCC Compile directly , Will report a mistake ：

/usr/bin/ld: cannot find -lGL
collect2: error: ld returned 1 exit status

Need to install open GL The library of ：

sudo apt-get install libglu1-mesa-dev 

 QT Engineering analysis ：

qt.pro

QT       += core gui /

/ It refers to the modules to be used in the project If you want to use other modules , You can go to QT Check the modules on the official website

https://www.qt.io/

And then click ：

  And then ：

  And then ：

  Select the corresponding version （ I use it 5.12）

  And then ：

  If you want to use a network module ：

  Click in ：

  Get it in your own project ：

 

 

Be careful ：

The contents of the document , It should correspond to the left window one by one  

Click on the little hammer , Is compiled ; Click on the green triangle Is to compile and run ;

The generated file is at the same level as the project directory , Generated APP The name is the same as the project ：

  If you want to modify the generation app Name ：