我创建了一个 dialog.h、dialog.cpp 和一个 dialog.ui,我在对话框中有 qlineedit,还有 ok 和 cancel 按钮,我想存储这些 linedit 信息以在不同的主窗口中使用文件。这是我的对话代码。
#include <QtGui/QApplication>
#include "dialog.h"
#include "ui_dialog.h"
void Dialog::startplanevolume()
{
if (xMax==0)
{
ui->label_17->setText("Error: Can't start, invalid \nmeasures");
}
else
{
this->accept();
}
}
// Define the length of the volume
void Dialog::bmprange()
{
// Getting some proprieties for the lenght of the volume
QString XMAX=ui->lineEdit->text();
xMax=XMAX.toDouble();
if (xMax==0)
{
ui->label_17->setText("Error: invalid measures");
}
else
{
ui->label_17->setText("Valid measures");
}
}
Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
// Control volume measures
// Making the lineedit objects only accept numbers
ui->lineEdit->setValidator(new QIntValidator(this));
connect(ui->lineEdit, SIGNAL(textChanged(QString)), this, SLOT(bmprange()));
// Start planevolume
connect(ui->pushButton, SIGNAL(clicked()), this, SLOT(startplanevolume()));
connect(ui->pushButton_2, SIGNAL(clicked()), this, SLOT(hide()));
}
Dialog::~Dialog()
{
delete ui;
}
void Dialog::changeEvent(QEvent *e)
{
QDialog::changeEvent(e);
switch (e->type()) {
case QEvent::LanguageChange:
ui->retranslateUi(this);
break;
default:
break;
}
}
如何在 mainwindow.cpp 中使用 xMax 的值?
这是我的对话.h
#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
namespace Ui {
class Dialog;
}
class Dialog : public QDialog {
Q_OBJECT
public:
Dialog(QWidget *parent = 0);
~Dialog();
protected:
void changeEvent(QEvent *e);
private:
Ui::Dialog *ui;
double xMax, yMax, zMax, xMMax, yMMax, zMMax, list[6];
public slots:
void bmprange();
void startplanevolume();
};
#endif // DIALOG_H
这是我的 main.cpp
#include <QtGui/QApplication>
#include "planevolume.h"
#include "dialog.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
Dialog *dialog= new Dialog;
if (dialog->exec())
{
planevolume mainwindow;
mainwindow.show();
return app.exec();
}
return 0;
}
那么我想用 xMax 在主窗口 planevolume.cpp 中计算一些东西