How to implement Qt Application Code

This article introduces the knowledge of "how to implement Qt application code". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Step 1:

Lay out the QT program, and then add code to automatically set the screen size in the constructor. The code is as follows:

Once set up, copy the qt code to Ubuntu.

# include

# include

# include

QDesktopWidget * deskTopWidget = QApplication::desktop ()

QRect deskRect = deskTopWidget- > availableGeometry ()

Int appH = deskRect.height ()

Int appW = deskRect.width ()

This- > setFixedSize (appW, appH)

SetGeometry (0,0, appW, appH)

The addition is completed as shown in figure 62.3.4.1:

Step 2:

Go to the directory of the project folder to be compiled, directly use the qmake under the qt source code we compiled on Ubuntu to generate Makefile, and type: / opt/qt5.7.0/bin/qmake

Step 3:

After the Makefile is successfully generated, you can compile it directly with make, and the executable files you get after compilation can be run on the development board.

As shown in the picture

This is the end of "how to implement Qt application code". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!