FontCombobox 和FontSizeCombobox

附件：http://files.cnblogs.com/xe2011/WindowsFormsFontCombox.rar

1. 自定义组件字体组合框
2. 自定义组件字体组合框如何使用
3. 自定义组件字体大小组合框
4. 自定义组件字体大小组合框如何使用
5. 如何设置richTextBox1选中的字体名称
6. 如何获得richTextBox1选中的字体名称
7. 如何设置richTextBox1选中的字体大小
8. 如何获得richTextBox1选中的字体大小
9. 如何在toolStrip中添加这2个控件

自定义组件的做法

1 新个新的工程，先做一个想要达到效果的样子来。

2 然后转到 InitializeComponent(); 把相关代码复制过来

3 选中工程添加一个类然后继承一个组件的类 如 class FontComboBox : ComboBox{}

4 小修改一下 基本完成了

自定义组件字体组合框类

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;

namespace System.Windows.Forms
{
    class FontComboBox : ComboBox
    {
        public FontComboBox()
        {
            this.comboBox1 = this;
            this.comboBox1.FormattingEnabled = true;
            this.comboBox1.Location = new System.Drawing.Point(12, 12);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Size = new System.Drawing.Size(121, 20);
            this.comboBox1.TabIndex = 1;

            //OwnerDrawVariable
            this.comboBox1.DrawMode = DrawMode.OwnerDrawVariable;
            this.comboBox1.MaxDropDownItems = 20;
            this.comboBox1.DropDownWidth = 200;




            this.comboBox1.Text = "Times New Roman";
            this.comboBox1.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.comboBox1_DrawItem);
            this.comboBox1.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.comboBox1_MeasureItem);
        }

        //这么写原因
        //1 comboBox1.Items初始化在Form1.Designer.cs产生了大量的代码 多出165行代码 我的系统上有165种字体
        //        
        //private void Form1_Load(object sender, EventArgs e)
        //{
        //    fontComboBox1.Initialize();
        //}
        public void Initialize()
        {
            this.comboBox1.Items.Clear();
            foreach (FontFamily f in FontFamily.Families)
            {
                comboBox1.Items.Add(f.Name);
            }
        }


        private System.Windows.Forms.ComboBox comboBox1;

        private void comboBox1_DrawItem(object sender, DrawItemEventArgs e)
        {
            e.DrawBackground();
            //e.DrawFocusRectangle();
            string s = comboBox1.Items[e.Index].ToString();

            string fontName = comboBox1.Items[e.Index].ToString();
            Font font = new Font(fontName, 12);

            e.Graphics.DrawString(s, font, Brushes.Black, e.Bounds);
        }

        private void comboBox1_MeasureItem(object sender, MeasureItemEventArgs e)
        {
            e.ItemHeight = 20;
        }
    }
}

初始化下就可以使用了

   private void Form1_Load(object sender, EventArgs e)
        {
            fontComboBox1.Initialize();
        }

自定义组件字体大小组合框类

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;

namespace System.Windows.Forms
{
    class FontSizeComboBox : ComboBox
    {
        public FontSizeComboBox()
        {
            this.comboBox1 = this;
            // 
            // comboBox1
            // 
            this.comboBox1.FormattingEnabled = true;
            this.comboBox1.Location = new System.Drawing.Point(12, 12);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Size = new System.Drawing.Size(121, 20);
            this.comboBox1.TabIndex = 1;
            //this.comboBox1.Sorted = true;

            //OwnerDrawVariable
            this.comboBox1.DrawMode = DrawMode.OwnerDrawVariable;
            this.comboBox1.MaxDropDownItems = 15;
            this.comboBox1.DropDownWidth = 200;
            this.comboBox1.Text = "9";                   
            this.comboBox1.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.comboBox1_DrawItem);
            this.comboBox1.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.comboBox1_MeasureItem);
        }

        //这么写原因有2
        //1 comboBox1.Items的赋值了2次
        //2 comboBox1.Items初始化在Form1.Designer.cs产生了大量的代码
        //private void Form1_Load(object sender, EventArgs e)
        //{
        //    fontSizeComboBox1.Initialize();
        //}
        public void Initialize()
        {
            this.comboBox1.Items.Clear();
            this.comboBox1.Items.AddRange(new string[] {
            "8",
            "9",
            "10",
            "11",
            "12",
            "14",
            "16",
            "18",
            "20",
            "22",
            "24",
            "26",
            "28",
            "36",
            "48",
            "72"});
        }

        private System.Windows.Forms.ComboBox comboBox1;

        private void comboBox1_DrawItem(object sender, DrawItemEventArgs e)
        {
            e.DrawBackground();
            //e.DrawFocusRectangle();

            string s = comboBox1.Items[e.Index].ToString();
            int fontSize = Convert.ToInt32(comboBox1.Items[e.Index].ToString());
            Font font = new Font("Times New Roman", fontSize, FontStyle.Bold);

            e.Graphics.DrawString(s, font, Brushes.Black, e.Bounds);
        }

        private void comboBox1_MeasureItem(object sender, MeasureItemEventArgs e)
        {
            e.ItemHeight = Convert.ToInt32(comboBox1.Items[e.Index].ToString()) + 12;
        }

    }
}

初始化下就可以使用了

   private void Form1_Load(object sender, EventArgs e)
        {
            fontSizeComboBox1.Initialize();
        }

设置richTextBox1选中的字体名称

        private void fontComboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            float fontSize;
            try
            {
                fontSize = richTextBox1.SelectionFont.Size;
            }
            catch
            {
                fontSize = richTextBox1.Font.Size;
            }
            richTextBox1.SelectionFont = new Font(fontComboBox1.Text, fontSize);
        }

获得richTextBox1选中的字体名称

 private void richTextBox1_SelectionChanged(object sender, EventArgs e)
        {
            if (richTextBox1.SelectionFont == null)
                return;

            fontComboBox1.Text = richTextBox1.SelectionFont.Name.ToString();
        }

如何设置richTextBox1选中的字体大小

        private void fontSizeComboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            string fontName;
            try
            {
                fontName = richTextBox1.SelectionFont.Name;
            }
            catch
            {
                fontName = richTextBox1.Font.Name;
            }

            float fontSize = Convert.ToSingle(fontSizeComboBox1.Text);
            richTextBox1.SelectionFont = new Font(fontName, fontSize);
        }

获得richTextBox1选中的字体大小

        private void richTextBox1_SelectionChanged(object sender, EventArgs e)
        {
            if (richTextBox1.SelectionFont == null)
                return;
            fontSizeComboBox1.Text = richTextBox1.SelectionFont.Size.ToString();
        }

 在toolStrip中添加这2个控件

1 选中TOOL STRIP 置于底层，选中这2个控件置于顶层

2 选中这2个控件按键盘的↑键把控件移上去