本人新手,在QT裏面寫程序,還調用了另一個dll,這個dll裏面有很多有用的標準輸出cout,但是只能在QT的“應用程序輸出”那欄顯示。如果發佈軟件,脫離QT後,這些信息就看不到了,不利於用戶診斷。所以找到一個方法脫離QT也能顯示。就是QProcess。(其實還不知道qDebug輸出的怎麼一起弄出來)
頭文件
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QDebug>
#include <QProcess>
#include <QFile>
#include <QFileDialog>
#include <QDialog>
namespace Ui {
class Widget;
}
class Widget : public QWidget
{
Q_OBJECT
public:
explicit Widget(QWidget *parent = 0);
~Widget();
public slots:
QString getLog();
void saveLog();
private:
QProcess process;
Ui::Widget *ui;
};
#endif // WIDGET_H
cpp
#include "widget.h"
#include "ui_widget.h"
#include <QDateTime>
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
this->setWindowTitle(tr("FMT Log Tool"));
ui->textEdit->setReadOnly(true);
process.start("FMTools.exe");
connect(ui->savebtn,SIGNAL(clicked(bool)),this,SLOT(saveLog()));
connect(ui->getbtn,SIGNAL(clicked(bool)),this,SLOT(getLog()));
}
void Widget::saveLog()
{
QDateTime time = QDateTime::currentDateTime();//獲取系統現在的時間
QString str = time.toString("yyyy-MM-dd hh:mm:ss ddd"); //設置顯示格式
QByteArray info = process.readAll();
QString filename = QFileDialog::getSaveFileName(this,
"Save Log File",
"log "+str+".log",
"LOG file (*.log);;All files(*.*)");
QFile file(filename);
QTextStream logfile(&file);
if(file.open(QIODevice::WriteOnly | QIODevice::Text))
logfile<<QString::fromLocal8Bit(info);
}
QString Widget::getLog()
{
QByteArray info = process.readAll();
QString logContent = QString::fromLocal8Bit(info);
ui->textEdit->setText(logContent);
return logContent;
}
Widget::~Widget()
{
delete ui;
}
主函數
#include "widget.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}