Windows应用编程(1)_7

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本文介绍了一个使用C#和Windows Forms设计的窗体实例，实现了复选框、单选按钮控制标签字体样式，以及水平滚动条调整字体大小的功能。通过具体代码展示了如何响应窗体加载、复选框状态改变、单选按钮选择和滚动条滚动等事件。

题目要求：

设计如图所示的窗体，实现下面要求的效果。

（1）复选框中文字在左边；

（2）最下部为水平滚动条。水平滚动条最小值为4、最大值为72，且在窗体Load事件中通过代码设置；

（3）单击任何复选框，标签上文字样式都发生变化；

（4）单击任意单选按钮，标签上文字字体都发生改变；

（5）拖动水平滚动条，标签上文字大小发生变化。

参考代码：

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 WindowsFormsApplication5_7
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "单选和复选框实验";
            this.label1.Text = "烟台大学";
            this.groupBox1.Text = "字体样式";
            this.groupBox2.Text = "字体";
            this.checkBox1.Text = "斜体";
            this.checkBox2.Text = "下划线";
            this.checkBox3.Text = "粗体";
            this.radioButton1.Text = "黑体";
            this.radioButton2.Text = "楷体";
            this.hScrollBar1.Minimum = 4;
            this.hScrollBar1.Maximum = 72;

        }

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked)
            {
                label1.Font = new Font(label1.Text, label1.Font.Size, label1.Font.Style | FontStyle.Italic);
            }
            else
            {
                label1.Font = new Font(label1.Text, label1.Font.Size, label1.Font.Style & ~FontStyle.Italic);
            }
        }

        private void checkBox2_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox2.Checked)
            {
                label1.Font = new Font(label1.Text, label1.Font.Size, label1.Font.Style | FontStyle.Underline);
            }
            else
            {
                label1.Font = new Font(label1.Text, label1.Font.Size, label1.Font.Style & ~FontStyle.Underline);
            }
        }

        private void checkBox3_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox3.Checked)
            {
                label1.Font = new Font(label1.Text, label1.Font.Size, label1.Font.Style | FontStyle.Bold);
            }
            else
            {
                label1.Font = new Font(label1.Text, label1.Font.Size, label1.Font.Style & ~FontStyle.Bold);
            }
        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton1.Checked)
            {
                label1.Font = new Font("黑体", label1.Font.Size,label1.Font.Style);
            }
        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton2.Checked)
            {
                label1.Font = new Font("楷体", label1.Font.Size,label1.Font.Style);
            }
        }

        private void hScrollBar1_Scroll(object sender, ScrollEventArgs e)
        {
            label1.Font = new Font(label1.Font.Name, hScrollBar1.Value,label1.Font.Style);
        }

    }
}

自动生成的Designer文件：

namespace WindowsFormsApplication5_7
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.label1 = new System.Windows.Forms.Label();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.checkBox3 = new System.Windows.Forms.CheckBox();
            this.checkBox2 = new System.Windows.Forms.CheckBox();
            this.checkBox1 = new System.Windows.Forms.CheckBox();
            this.groupBox2 = new System.Windows.Forms.GroupBox();
            this.radioButton2 = new System.Windows.Forms.RadioButton();
            this.radioButton1 = new System.Windows.Forms.RadioButton();
            this.hScrollBar1 = new System.Windows.Forms.HScrollBar();
            this.groupBox1.SuspendLayout();
            this.groupBox2.SuspendLayout();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(43, 28);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(62, 18);
            this.label1.TabIndex = 0;
            this.label1.Text = "label1";
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.checkBox3);
            this.groupBox1.Controls.Add(this.checkBox2);
            this.groupBox1.Controls.Add(this.checkBox1);
            this.groupBox1.Location = new System.Drawing.Point(40, 162);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(384, 173);
            this.groupBox1.TabIndex = 1;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "groupBox1";
            // 
            // checkBox3
            // 
            this.checkBox3.AutoSize = true;
            this.checkBox3.Location = new System.Drawing.Point(278, 76);
            this.checkBox3.Name = "checkBox3";
            this.checkBox3.Size = new System.Drawing.Size(115, 22);
            this.checkBox3.TabIndex = 2;
            this.checkBox3.Text = "checkBox3";
            this.checkBox3.UseVisualStyleBackColor = true;
            this.checkBox3.CheckedChanged += new System.EventHandler(this.checkBox3_CheckedChanged);
            // 
            // checkBox2
            // 
            this.checkBox2.AutoSize = true;
            this.checkBox2.Location = new System.Drawing.Point(146, 76);
            this.checkBox2.Name = "checkBox2";
            this.checkBox2.Size = new System.Drawing.Size(115, 22);
            this.checkBox2.TabIndex = 1;
            this.checkBox2.Text = "checkBox2";
            this.checkBox2.UseVisualStyleBackColor = true;
            this.checkBox2.CheckedChanged += new System.EventHandler(this.checkBox2_CheckedChanged);
            // 
            // checkBox1
            // 
            this.checkBox1.AutoSize = true;
            this.checkBox1.Location = new System.Drawing.Point(6, 76);
            this.checkBox1.Name = "checkBox1";
            this.checkBox1.Size = new System.Drawing.Size(115, 22);
            this.checkBox1.TabIndex = 0;
            this.checkBox1.Text = "checkBox1";
            this.checkBox1.UseVisualStyleBackColor = true;
            this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
            // 
            // groupBox2
            // 
            this.groupBox2.Controls.Add(this.radioButton2);
            this.groupBox2.Controls.Add(this.radioButton1);
            this.groupBox2.Location = new System.Drawing.Point(508, 162);
            this.groupBox2.Name = "groupBox2";
            this.groupBox2.Size = new System.Drawing.Size(322, 173);
            this.groupBox2.TabIndex = 2;
            this.groupBox2.TabStop = false;
            this.groupBox2.Text = "groupBox2";
            // 
            // radioButton2
            // 
            this.radioButton2.AutoSize = true;
            this.radioButton2.Location = new System.Drawing.Point(184, 76);
            this.radioButton2.Name = "radioButton2";
            this.radioButton2.Size = new System.Drawing.Size(141, 22);
            this.radioButton2.TabIndex = 1;
            this.radioButton2.TabStop = true;
            this.radioButton2.Text = "radioButton2";
            this.radioButton2.UseVisualStyleBackColor = true;
            this.radioButton2.CheckedChanged += new System.EventHandler(this.radioButton2_CheckedChanged);
            // 
            // radioButton1
            // 
            this.radioButton1.AutoSize = true;
            this.radioButton1.Location = new System.Drawing.Point(37, 76);
            this.radioButton1.Name = "radioButton1";
            this.radioButton1.Size = new System.Drawing.Size(141, 22);
            this.radioButton1.TabIndex = 0;
            this.radioButton1.TabStop = true;
            this.radioButton1.Text = "radioButton1";
            this.radioButton1.UseVisualStyleBackColor = true;
            this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButton1_CheckedChanged);
            // 
            // hScrollBar1
            // 
            this.hScrollBar1.Location = new System.Drawing.Point(40, 363);
            this.hScrollBar1.Name = "hScrollBar1";
            this.hScrollBar1.Size = new System.Drawing.Size(790, 40);
            this.hScrollBar1.TabIndex = 3;
            this.hScrollBar1.Scroll += new System.Windows.Forms.ScrollEventHandler(this.hScrollBar1_Scroll);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 18F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(878, 427);
            this.Controls.Add(this.hScrollBar1);
            this.Controls.Add(this.groupBox2);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.label1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.groupBox1.ResumeLayout(false);
            this.groupBox1.PerformLayout();
            this.groupBox2.ResumeLayout(false);
            this.groupBox2.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.CheckBox checkBox3;
        private System.Windows.Forms.CheckBox checkBox2;
        private System.Windows.Forms.CheckBox checkBox1;
        private System.Windows.Forms.GroupBox groupBox2;
        private System.Windows.Forms.RadioButton radioButton2;
        private System.Windows.Forms.RadioButton radioButton1;
        private System.Windows.Forms.HScrollBar hScrollBar1;
    }
}