Implementation of sleep in QT

Using the sleep function in QT is difficult. This function is not available in several common header files. There is a sleep in the QTest class for unit testing. You can run the following command:

# Include
<
QTest
>

.......

QTest ::QSleep
(
100
);

In this way. In the help document, qSleep actually calls the sleep function provided by the operating system. For example, it calls nanosleep () on Linux and Sleep () on windows ()

Of course, we can also use the sleep that comes with the operating system to achieve sleep, through Q_ OS _WIN32,
Q_ OS _LINUX for Conditional compilation

 

# If defined Q_ OS _WIN32 <br/> # include <windows. h> <br/> void sleep (unsigned long nSeconde) <br/>{< br/> Sleep (nSeconde) * 1000 ); <br/>}< br/> # endif <br/> # if defined Q_ OS _LINUX <br/> # include <unistd. h> <br/> # endif