我正在尝试做的是在另一个程序中使用启动程序QProcess
,然后将启动程序的输出保存到QTextEdit
启动程序中。每次我启动这个程序时,我都希望它向QTextEdit
. 现在我让程序启动,但是在应该编写文本之后它崩溃了。这是代码:
#include <QWidget>
#include <QPushButton>
#include <QTextEdit>
#include <QProcess>
#include <QVBoxLayout>
#include <QApplication>
class Widget : public QWidget
{
Q_OBJECT
QTextEdit* text;
public:
Widget() : text(new QTextEdit) {
QPushButton* addBtn = new QPushButton("Add Module");
text->setReadOnly(true);
QVBoxLayout* layout = new QVBoxLayout(this);
layout->addWidget(addBtn,0);
layout->addWidget(text);
connect(addBtn,SIGNAL(clicked()),SLOT(launchModule()));
}
Q_SLOT void launchModule() {
QString program = "C:/A2Q2-build-desktop/debug/A2Q1.exe";
QProcess *myProcess = new QProcess(this);
connect(myProcess, SIGNAL(finished(int)), SLOT(finished()));
connect(myProcess, SIGNAL(error(QProcess::ProcessError)), SLOT(finished()));
myProcess->start(program);
}
Q_SLOT void finished() {
QProcess *process = qobject_cast<QProcess*>(sender());
QString out = process->readAllStandardOutput(); // will be empty if the process failed to start
text->append(out);
delete process;
}
};
int main(int argc, char **argv)
{
QApplication app(argc, argv);
Widget w;
w.show();
app.exec();
}
#include "main.moc"