Mastering Qt 5

Adding the Linux implementation

Let's make the Linux implementation of our ch02-sysinfo project. If you have already done the Windows implementation, it will be a piece of cake! If you have not, you should take a look at it. Some information and tips will not be repeated in this part, such as how to create a SysInfo implementation class, keyboard shortcuts, and details about the SysInfo interface.

Create a new C++ class, called SysInfoLinuxImpl, that inherits from the SysInfo class and insert virtual functions from the base class:

#include <QtGlobal>#include "SysInfo.h" 
 
class SysInfoLinuxImpl : public SysInfo 
{ 
public: 
    SysInfoLinuxImpl(); 
 
    void init() override; 
    double cpuLoadAverage() override; 
    double memoryUsed() override; 
}; 

We will start ...