C# FontDialog.Apply事件代码示例

private void Button1_Click(System.Object sender, System.EventArgs e)
   {
       // Set FontMustExist to true, which causes message box error
       // if the user enters a font that does not exist. 
       FontDialog1.FontMustExist = true;
       
       // Associate the method handling the Apply event with the event.
       FontDialog1.Apply += new System.EventHandler(FontDialog1_Apply);

       // Set a minimum and maximum size to be
       // shown in the FontDialog.
       FontDialog1.MaxSize = 32;
       FontDialog1.MinSize = 18;

       // Show the Apply button in the dialog.
       FontDialog1.ShowApply = true;

       // Do not show effects such as Underline
       // and Bold.
       FontDialog1.ShowEffects = false;
       
       // Save the existing font.
       System.Drawing.Font oldFont = this.Font;

       //Show the dialog, and get the result
       DialogResult result = FontDialog1.ShowDialog();

       // If the OK button in the Font dialog box is clicked, 
       // set all the controls' fonts to the chosen font by calling
       // the FontDialog1_Apply method.
       if (result == DialogResult.OK)
       {
           FontDialog1_Apply(this.Button1, new System.EventArgs());
       }
           // If Cancel is clicked, set the font back to
           // the original font.
       else if (result == DialogResult.Cancel)
       {
           this.Font = oldFont;
           foreach ( Control containedControl in this.Controls)
           {
               containedControl.Font = oldFont;
           }
       }
   }

   // Handle the Apply event by setting all controls' fonts to 
   // the chosen font. 
   private void FontDialog1_Apply(object sender, System.EventArgs e)
   {

       this.Font = FontDialog1.Font;
       foreach ( Control containedControl in this.Controls )
       {
           containedControl.Font = FontDialog1.Font;
       }
   }

//引入命名空间
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

    public class ColorFontDialog : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Label label1;
        public ColorFontDialog()
        {
            this.Text = "Font and Color Dialogs";
            this.button1.Text = "&Font";
            this.button2.Text = "&Color";
            this.label1.Text = "Change my FONT and COLOR!";

            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.SuspendLayout();

            this.button1.Location = new System.Drawing.Point(24, 8);
            this.button1.Text = "button1";
            this.button1.Click += new System.EventHandler(this.button1_Click_1);

            this.button2.Location = new System.Drawing.Point(120, 8);
            this.button2.Text = "button2";
            this.button2.Click += new System.EventHandler(this.button2_Click);

            this.label1.Location = new System.Drawing.Point(8, 48);
            this.label1.Size = new System.Drawing.Size(280, 48);
            this.label1.TabIndex = 2;
            this.label1.Text = "label1";

            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(292, 101);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.label1,
                                                                          this.button2,
                                                                          this.button1});
            this.Name = "ColorFontDialog";
            this.Text = "ColorFontDialog";
            this.ResumeLayout(false);

        }
        static void Main() 
        {
            Application.Run(new ColorFontDialog());
        }
        private void button2_Click(object sender, System.EventArgs e)
        {
            ColorDialog cd = new ColorDialog();
            cd.AllowFullOpen = true;   // allow custom colors
            cd.FullOpen = true;   // shows custom colors automatically
            cd.Color = Color.DarkBlue;  // sets the custom color
            if(cd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                this.label1.ForeColor = cd.Color;
        }
        private void button1_Click_1(object sender, System.EventArgs e)
        {
            FontDialog fd = new FontDialog();
            fd.ShowColor = true;
            fd.Color = Color.Blue;
            fd.ShowApply = true;   // ColorDialog does not provide this option!!!
            fd.Apply += new EventHandler(ApplyFont);
            if(fd.ShowDialog() != System.Windows.Forms.DialogResult.Cancel)
                ChangeFont(fd);
        }

        private void ApplyFont(object o, EventArgs ea)
        {
            ChangeFont((FontDialog)o);
        }

        private void ChangeFont(FontDialog fd)
        {
            this.label1.Font = fd.Font;
            this.label1.ForeColor = fd.Color;
        }
    }