Qt console hello world

This guide shows how a Qt console hello world looks like.

▣ Open Qt Creator and click on Create Project...

▣ Create Qt Console Application by following the section from @1 to @3. 

▣ In Project Location window provide a project name, i.e., HelloWorldConsole

▣ In Define Build System select CMake

▣ In Translation File, take the default values

▣ In Kit Selection, select the toolchain kit to be used. Below shows only one which is MinGW 64-bit. 

▣ In Project Management, take the default. 

▣ In line 6, I have added an instruction to output Hello World in to the console. Also changed to return 0 to exit the application as event loop is not needed.

▣ Gist source code shown below for convenience

	#include <QCoreApplication>
	int main(int argc, char *argv[])
	{
	QCoreApplication a(argc, argv);
	QTextStream(stdout) << "Hello World\n";
	//Not using the event loop, close when one
	//return a.exec();
	return 0;
	}

view raw QtHelloWorldConsole.cpp hosted with ❤ by GitHub

▣ Running it using Qt Creator is well and good but we probably want to run it external to the IDE. To deploy the binary with all the dependencies, open the compiler environment used to build the application. In the case above we have used Qt 6.4.1 (MinGW 11.2.0 64-bit). 

▣ Run the following command (change the paths as necessary)

cd \
md tmp
cd tmp
copy C:\Users\t\Documents\build-HelloWorldConsole-Desktop_Qt_6_4_1_MinGW_64_bit-Debug\HelloWorldConsole.exe
windeployqt HelloWorldConsole.exe

▣ The folder structure should look like this. It also shows a sample out from the application. 

Keywords: CPP, Qt, Hello World