Qt：标准字体对话框类QFontDialog选择字体设置文本编辑器-蒲公英云

Qt：标准字体对话框类QFontDialog选择字体设置文本编辑器

迷南。 2023-01-12 11:42 609阅读 0赞

1、新建”QT GUI”，基类选择”QDialog’，取消“创建界面”

2、dialog.h中

#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
#include <QLineEdit>
#include <QPushButton>
#include <QGridLayout>
class Dialog : public QDialog
{
    Q_OBJECT
public:
    Dialog(QWidget *parent = 0);
    ~Dialog();
private:
    QPushButton *fontBtn;
    QLineEdit *fontLineEdit;
    QGridLayout *mainLayout;
private slots:
    void showFont();
};
#endif // DIALOG_H

2、dialog.cpp中

#include "dialog.h"
#include <QFontDialog>
Dialog::Dialog(QWidget *parent)
    : QDialog(parent)
{
    //控件初始化
    fontBtn = new QPushButton;
    fontBtn->setText(tr("字体标准对话框"));
    fontLineEdit = new QLineEdit;
    fontLineEdit->setText(tr("welcome!"));
    //添加布局管理
    mainLayout = new QGridLayout(this);   //注意一定要有一个this
    mainLayout->addWidget(fontBtn, 2, 0);
   mainLayout->addWidget(fontLineEdit, 2, 1);
    //信号与槽
    connect(fontBtn, SIGNAL(clicked()), this, SLOT(showFont()));
}
Dialog::~Dialog()
{
}
void Dialog::showFont()
{
    bool ok;
    QFont f = QFontDialog::getFont(&ok);
    if(ok){
        fontLineEdit->setFont(f);
    }
}