我正在用QtCreator创建一个小应用程序。它编译,但从QtCreator执行时,我得到“该程序已经无法完成”的错误。Qt程序不起作用:该程序已经无法完成
如果我试图执行从控制台的二进制文件,我得到一个Segementation故障(核心转储)。
因为这是我第一次我自己开始Qt代码,我想我失去了一些东西。请检查下面的代码:
页眉mainwindow.h:
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
class MainWindow;
class QLabel;
class QLineEdit;
class QPushButton;
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
void createGUI();
private:
QLineEdit *mysqlUserLineEdit;
QLineEdit *mysqlPasswordLineEdit;
QLineEdit *albatrossIPLineEdit;
QLineEdit *albatrossPortLineEdit;
QPushButton *exitButton;
QPushButton *startButton;
};
#endif // MAINWINDOW_H
来源mainwindow.cpp:
#include <QtGui>
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent)
{
createGUI();
//connect(...)
//connect(...)
setWindowTitle(tr("Albatross MySQL simulator"));
}
MainWindow::~MainWindow()
{
}
void MainWindow::createGUI()
{
QVBoxLayout *mainLayout = new QVBoxLayout;
QHBoxLayout *settingsLayout = new QHBoxLayout;
QVBoxLayout *mysqlSettingsLayout = new QVBoxLayout;
QHBoxLayout *mysqlUserLayout = new QHBoxLayout;
mysqlUserLineEdit = new QLineEdit();
QLabel *mysqlUserLabel = new QLabel(tr("&User:"));
mysqlUserLabel->setBuddy(mysqlUserLineEdit);
mysqlUserLayout->addWidget(mysqlUserLabel);
mysqlUserLayout->addWidget(mysqlUserLineEdit);
QHBoxLayout *mysqlPasswordLayout = new QHBoxLayout;
mysqlPasswordLineEdit = new QLineEdit();
QLabel *mysqlPasswordLabel = new QLabel(tr("&Password:"));
mysqlPasswordLabel->setBuddy(mysqlPasswordLineEdit);
mysqlPasswordLayout->addWidget(mysqlPasswordLabel);
mysqlPasswordLayout->addWidget(mysqlPasswordLineEdit);
mysqlSettingsLayout->addLayout(mysqlUserLayout);
mysqlSettingsLayout->addLayout(mysqlPasswordLayout);
QVBoxLayout *networkSettingsLayout = new QVBoxLayout;
QHBoxLayout *albatrossIPLayout = new QHBoxLayout;
albatrossIPLineEdit = new QLineEdit();
QLabel *albatrossIPLabel = new QLabel(tr("&IP:"));
albatrossIPLabel->setBuddy(albatrossIPLineEdit);
albatrossIPLayout->addWidget(albatrossIPLabel);
albatrossIPLayout->addWidget(albatrossIPLineEdit);
QHBoxLayout *albatrossPortLayout = new QHBoxLayout;
albatrossPortLineEdit = new QLineEdit();
QLabel *albatrossPortLabel = new QLabel(tr("P&ort:"));
albatrossPortLabel->setBuddy(albatrossPortLineEdit);
albatrossPortLayout->addWidget(albatrossPortLabel);
albatrossPortLayout->addWidget(albatrossPortLineEdit);
networkSettingsLayout->addLayout(albatrossIPLayout);
networkSettingsLayout->addLayout(albatrossPortLayout);
settingsLayout->addLayout(mysqlSettingsLayout);
settingsLayout->addLayout(networkSettingsLayout);
QHBoxLayout *buttonsLayout = new QHBoxLayout;
exitButton = new QPushButton(tr("&Exit"));
buttonsLayout->addWidget(exitButton);
startButton = new QPushButton(tr("&Start"));
startButton->setDefault(true);
buttonsLayout->addWidget(startButton);
mainLayout->addLayout(settingsLayout);
mainLayout->addLayout(buttonsLayout);
centralWidget()->setLayout(mainLayout);
}
最后的main.cpp ,,这与QtCreator自动生成:
#include <QtGui/QApplication>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
编辑:好吧,使用mainLayout时,将其附加到主窗口中,而这个问题是mainwindow.cpp的最后一行。这就是抛出分段错误的地方。我应该如何设置中央部件?或者是否有任何其他方式将布局附加到主窗口小部件?
有趣的代码格式... – SingerOfTheFall
@SingerOfTheFall这是为什么?请评论,我很高兴得知如果我做错了 –
1.在第一行设置断点; 2.以调试模式运行程序; 3.一行一行地遍历你的程序,并找出哪一行seg。遇到了错误,我敢打赌://连接,据我所知,将小部件连接到需要的插槽 –