qt-10基本对话框(文件--颜色--字体)

Dialog

Dialog.h

#ifndef DIALOG_H
#define DIALOG_H


#include "exdialog.h"

#include <QDialog>
#include <QPushButton>
#include <QLineEdit>
#include <QGridLayout>
#include <QFileDialog>
#include <QColorDialog>
#include <QFontDialog>
#include <QLabel>



class Dialog : public QDialog
{
   
    Q_OBJECT

public:
    Dialog(QWidget *parent = nullptr);
    ~Dialog();
private:

    QPushButton* FileBtn;
    QLineEdit* FileLineEdit;
    QGridLayout* MainLayout;
    QPushButton* ColorBtn;
    QFrame* ColorFrame;
    QPushButton* FontBtn;
    QLineEdit* FontLineEdit;
    QPushButton* ExPutBtn;
    ExDialog* Exdialog;

private slots:
    void ShowFile();
    void ShowColor();
    void ShowFont();
    void ShowExPutDlg();

};
#endif // DIALOG_H

Dialog.cpp

#include "dialog.h"

Dialog::Dialog(QWidget *parent)
    : QDialog(parent)
{
   
    //实例化组件对象
    //文件
    FileBtn = new QPushButton(tr("文件标准对话框"));
    FileLineEdit = new QLineEdit;
    //颜色
    ColorBtn = new QPushButton(tr("颜色标准对话框"));
    ColorFrame = new QFrame;
    ColorFrame->setFrameShape(QFrame::Box);
    ColorFrame->setAutoFillBackground(true);
    //字体
    FontBtn = new QPushButton(tr("字体标准对话框实例"));
    FontLineEdit = new QLineEdit(tr("welcome!"));
    //弹出输入框的Dialog
    ExPutBtn = new QPushButton(tr("标准输入对话框实例"));


    //布局
    MainLayout = new QGridLayout(this);
    MainLayout->addWidget(FileBtn,0,0);
    MainLayout->addWidget(FileLineEdit,0,1);
    MainLayout->addWidget(ColorBtn,1,0);
    MainLayout->addWidget(ColorFrame,1,