using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace _15_5
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void buttonOpen_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "文本文件(RTF)|*.rtf";
            ofd.FilterIndex = 2;
            ofd.RestoreDirectory = true;
            if (ofd.ShowDialog() == DialogResult.OK)
                richTextBox1.LoadFile(ofd.FileName);
        }

        private void buttonSave_Click(object sender, EventArgs e)
        {
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "文本文件(RTF)|*.rtf";
            sfd.FilterIndex = 2;
            sfd.RestoreDirectory = true;
            if (sfd.ShowDialog() == DialogResult.OK)
                richTextBox1.SaveFile(sfd.FileName);
        }

        private void buttonFonts_Click(object sender, EventArgs e)
        {
            FontDialog fontDialog = new FontDialog();
            fontDialog.ShowDialog();
            fontDialog.Font = richTextBox1.SelectionFont;
            fontDialog.Color = richTextBox1.SelectionColor;
            if (fontDialog.ShowDialog() == DialogResult.OK)
            { 
                richTextBox1.SelectionFont = fontDialog.Font; 
                richTextBox1.SelectionColor = fontDialog.Color;
            }
        }

        private void buttonExit_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}