统一去除未使用system返回值警告

MainWidget.cpp

@@ -22,7 +22,7 @@ void MainWidget::connect_operator()
     connect(ui->btnDelEnv, &QPushButton::clicked, this, [=]() { del_env_btn(); });
     connect(ui->btnGenerate, &QPushButton::clicked, this, [=]() { generate(); });
     connect(ui->btnInstall, &QPushButton::clicked, this, [=]() { install_bin2menu(); });
-    connect(ui->btnExit, &QPushButton::clicked, this, [=]() { QApplication::exit();});
+    connect(ui->btnExit, &QPushButton::clicked, this, [=]() { QApplication::exit(); });
 }
 
 void MainWidget::control_init()
@@ -210,6 +210,12 @@ bool MainWidget::isOk(QWidget* parent, const QString& title, const QString& cont
 
 void MainWidget::message(QWidget* parent, const QString& content) { QMessageBox::information(parent, "提示", content); }
 
+void MainWidget::cmd_exec(const std::string& cmd) 
+{
+    int r = system(cmd.c_str());
+    (void)r;
+}
+
 void MainWidget::generate()
 {
     ui->plainTextEdit->clear();
@@ -293,7 +299,6 @@ void MainWidget::generate()
     }
     out << run_sh;
     out.close();
-    int r = system(std::string("chmod +x " + out_sh).c_str());
-    (void)r;
+    cmd_exec(std::string("chmod +x " + out_sh));
     message(this, "完成");
 }

MainWidget.h

@@ -49,6 +49,7 @@ public:
     static QString SelectFile(QWidget* parent, QLineEdit* pEdit, const QString& info, const QString& filter);
     static bool    isOk(QWidget* parent, const QString& title, const QString& content);
     static void    message(QWidget* parent, const QString& content);
+    static void    cmd_exec(const std::string& cmd);
 
 private:
     Ui::MainWidget* ui;

adddesktop.cpp

@@ -100,7 +100,7 @@ void AddDesktop::install_to_desktop()
     out << ct;
     out.close();
     std::string cp_cmd("pkexec cp " + tmp.string() + " /usr/share/applications");
-    system(cp_cmd.c_str());
+    MainWidget::cmd_exec(cp_cmd);
     fs::remove(tmp);
     MainWidget::message(this, "完成");
 }