QProcess process; process.setEnvironment({"MY_VARIABLE=value"});
QProcess process; process.setEnvironment({"VAR1=value1", "VAR2=value2", "VAR3=value3"});This code sets 3 environment variables: VAR1, VAR2 and VAR3 with values value1, value2 and value3 respectively. The package library for QProcess is Qt Core.