27 lines
806 B
C++
27 lines
806 B
C++
#include "widget.h"
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#include <QApplication>
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#include <QCoreApplication>
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#include <QProcess>
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#include <QSharedMemory>
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int main(int argc, char *argv[])
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{
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static QSharedMemory *shareMem = new QSharedMemory("IPBS_Station"); //创建“SingleApp”的共享内存块
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if (!shareMem->create(1))//创建大小1b的内存
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{
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// QMessageBox::information(nullptr, "提示", "程序已经运行了!");
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// qApp->quit(); //创建失败，说明已经有一个程序运行，退出当前程序
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return -1;
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}
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QApplication a(argc, argv);
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Widget w;
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w.show();
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try {
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return a.exec();
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} catch (...) {
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// 发生异常时重启程序
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QProcess::startDetached(QApplication::applicationFilePath(), QApplication::arguments());
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exit(1);
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}
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}
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