从Qvector设置按钮的数量及其名称(文本)。按下按钮后,我需要重新设置文本并在lineEdit中显示。
标题文件:
#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
#include <QWidget>
#include <QVector>
#include <QLineEdit>
#include <QPushButton>
#include <QHBoxLayout>
#include <QVBoxLayout>
class Dialog : public QDialog
{
Q_OBJECT
public:
Dialog(QWidget *parent = 0);
~Dialog();
private slots:
void Buttons(QVector<QString>&);
private:
QVector<QPushButton*>button;
QString mline;
QLineEdit *line;
QVBoxLayout *layout;
QAction *Clicked;
};
#endif // DIALOG_H
源文件:
#include "dialog.h"
Dialog::Dialog(QWidget *parent): QDialog(parent)
{
this->setFixedSize(this->minimumSize());
line = new QLineEdit(this);
layout = new QVBoxLayout(this);
layout->addWidget(line);
QVector<QString>v;
v.append("a");
v.append("b");
v.append("c");
v.append("5");
v.append("45");
Buttons(v);
for(int i=0;i<button.size();i++)
layout->addWidget(button[i]);
setLayout(layout);
}
Dialog::~Dialog(){}
void Dialog::Buttons(QVector<QString>&vec)
{
if(!button.isEmpty())
button.clear();
for(int i=0; i<vec.size();i++)
{
button.append(new QPushButton(this));
button[i]->setText(vec[i]);
button[i]->show();
}
}
对于它我没有使用用户界面(ui),也无法为所有按钮创建插槽。怎么办呢?
答案 0 :(得分:0)
您可以在您的情况下使用信号/插槽。信号/槽与QObject有关。无论您是否使用QT Designer都无关紧要。在您的代码中,
for(int i=0; i<vec.size();i++)
{
button.append(new QPushButton(this));
connect(button[i], SIGNAL( clicked() ), this, SLOT(OnButtonClicked()));
button[i]->setText(vec[i]);
button[i]->show();
}
答案 1 :(得分:0)
您可以使用QButtonGroup
来识别按钮并将所有按钮的信号合并到一个插槽中
实施例
QButtonGroup myButtongroup;
connect(&myButtonGroup,SIGNAL(buttonClicked(QAbstractButton*),this, SLOT(myButtonClicked (QAbstractButton*)));
for(int i=0; i<vec.size();i++)
{
QString buttonName = vec[i];
myButtonGroup.addButton(new QPushButton(buttonName,this),i);
//Get the button using myButtonGroup.button(i) to add to your layout
// You can add the buttons to the layout right here to elimate one more loop
layout.addWidget(myButtonGroup.button(i));
}
//Slot for button clicked
void Dialog::myButtonClicked(QAbstractButton *myButton)
{
line->setText(myButton->text());// Adding the button name to line edit
}
有关QButtonGroup
signals
的更多信息,请参阅documentation