私の例:
main.cpp:
QApplication a(argc, argv);
MainWindow w;
w.start();
return a.exec();
w.start():
if (cf.exec()){
this->show();
} else {
qDebug()<<"Need exit";
//here should be exit
}
コメントの場所で、私はやろうとしました: qApp->exit() と qApp->quit() と this->close() (ただし、「これ」は表示されておらず、もちろん close() は機能していません)。コードの任意の場所からアプリを終了するにはどうすればよいですか?
コード全体:
main.cpp
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.start();
return a.exec();
}
メインウィンドウ.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include "CadrForm.h"
#include "TeacherForm.h"
#include "DepartmentForm.h"
#include "CategoriesForm.h"
#include "PostForm.h"
#include "RanksAndDegreesForm.h"
#include "TeachersRankAndDegreeForm.h"
#include "ConnectionForm.h"
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
void start();
~MainWindow();
signals:
void widgetChanged(QWidget*);
private slots:
void on_actionCadr_triggered();
void resetMainLayout(QWidget* w);
void on_actionTeacher_triggered();
void on_actionDepartment_triggered();
void on_actionPost_triggered();
void on_actionCategories_triggered();
void on_actionRanksAndDegrees_triggered();
void on_actionTeachersRD_triggered();
private:
ConnectionForm cf;
CadrForm *cadrForm;
TeacherForm *teacherForm;
DepartmentForm *departmentForm;
CategoriesForm *categoriesForm;
PostForm *postForm;
RanksAndDegreesForm *ranksAndDegreesForm;
TeachersRankAndDegreeForm *teachersRankAndDegreeForm;
QWidget *current;
Ui::MainWindow *ui;
void addWidgetToMainLayout(QWidget *w);
};
#endif // MAINWINDOW_H
メインウィンドウ.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
connect(this, SIGNAL(widgetChanged(QWidget*)), this, SLOT(resetMainLayout(QWidget*)));
ui->setupUi(this);
cadrForm = new CadrForm(this);
teacherForm = new TeacherForm(this);
departmentForm = new DepartmentForm(this);
categoriesForm = new CategoriesForm(this);
postForm = new PostForm(this);
ranksAndDegreesForm = new RanksAndDegreesForm(this);
teachersRankAndDegreeForm = new TeachersRankAndDegreeForm(this);
addWidgetToMainLayout(cadrForm);
addWidgetToMainLayout(teacherForm);
addWidgetToMainLayout(departmentForm);
addWidgetToMainLayout(categoriesForm);
addWidgetToMainLayout(postForm);
addWidgetToMainLayout(ranksAndDegreesForm);
addWidgetToMainLayout(teachersRankAndDegreeForm);
}
void MainWindow::start()
{
if (cf.exec()){
this->show();
} else {
qDebug()<<"Need exit";
qApp->quit();
qDebug()<<"still working";
}
}
void MainWindow::addWidgetToMainLayout(QWidget *w)
{
ui->mainLayout->insertWidget(0, w);
ui->mainLayout->itemAt(0)->widget()->hide();
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::resetMainLayout(QWidget *w)
{
int index;
if (current)
{
index = ui->mainLayout->indexOf(current);
ui->mainLayout->itemAt(index)->widget()->hide();
}
index = ui->mainLayout->indexOf(w);
if (index != -1) ui->mainLayout->itemAt(index)->widget()->show();
else {
addWidgetToMainLayout(w);
resetMainLayout(w);
}
current = w;
setWindowTitle(current->windowTitle());
}
void MainWindow::on_actionCadr_triggered()
{
emit widgetChanged(cadrForm);
}
void MainWindow::on_actionTeacher_triggered()
{
emit widgetChanged(teacherForm);
}
void MainWindow::on_actionDepartment_triggered()
{
emit widgetChanged(departmentForm);
}
void MainWindow::on_actionPost_triggered()
{
emit widgetChanged(postForm);
}
void MainWindow::on_actionCategories_triggered()
{
emit widgetChanged(categoriesForm);
}
void MainWindow::on_actionRanksAndDegrees_triggered()
{
emit widgetChanged(ranksAndDegreesForm);
}
void MainWindow::on_actionTeachersRD_triggered()
{
emit widgetChanged(teachersRankAndDegreeForm);
}
ConnectionForm は、GUI を備えた単なる QDialog であり、追加のコードはありません。