1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Threading.Tasks;
9 using System.Windows.Forms;
10
11 namespace 菜单和工具栏
12 {
13 public partial class Form1 : Form
14 {
15 public Form1()
16 {
17 InitializeComponent();
18 }
19 #region 窗体载入
20
21 // 窗体载入
22 private void Form1_Load(object sender, EventArgs e)
23 {
24 // 状态栏ToolStripMenuItem处于【√】勾选状态
25 状态栏ToolStripMenuItem.Checked = true;
26 状态栏ToolStripMenuItem.CheckState = CheckState.Checked;
27 // 设置 状态栏菜单的CheckOnClick 为 true, 当鼠标单击 状态栏菜单时,会根据CheckedChanged设置勾选状态
28 // 即: 处于【√】时,取消勾选, 否则勾选
29 状态栏ToolStripMenuItem.CheckOnClick = true;
30 // 显示控件: statusStrip1
31 statusStrip1.Visible = true;
32
33 // 工具栏ToolStripMenuItem处于【√】勾选状态
34 工具栏ToolStripMenuItem.Checked = true;
35 工具栏ToolStripMenuItem.CheckState = CheckState.Checked;
36 工具栏ToolStripMenuItem.CheckOnClick = true;
37 toolStrip1.Visible = true;
38
39 // 工具栏按钮的显示样式 : 图片+文字
40 toolStripButton1.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText;
41 toolStripButton1.TextImageRelation = TextImageRelation.ImageBeforeText; // 图片在文字前面
42
43 toolStripButton2.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText;
44 toolStripButton2.TextImageRelation = TextImageRelation.ImageAboveText; // 图片在文字上面
45
46 toolStripButton3.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText;
47 toolStripButton3.TextImageRelation = TextImageRelation.Overlay; // 文字覆盖图片
48
49 toolStripButton4.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText;
50 toolStripButton4.TextImageRelation = TextImageRelation.TextBeforeImage; // 图片在文字后面
51
52 toolStripButton5.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText;
53 toolStripButton5.TextImageRelation = TextImageRelation.TextAboveImage; // 图片在文字下面
54
55 }
56 #endregion
57
58 #region 退出菜单项
59 private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
60 {
61 // 关闭窗口
62 this.Close();
63 }
64 #endregion
65
66 #region 关于菜单项
67
68 private void 关于ToolStripMenuItem_Click(object sender, EventArgs e)
69 {
70 //【关于对话框】
71 AboutBox aboutbox = new AboutBox();
72 aboutbox.ShowDialog(); // 模态
73 }
74 #endregion
75
76 #region 状态栏菜单 : CheckedChanged 事件
77 /// <summary> 根据状态栏ToolStripMenuItem前面的【√】勾选状态, 设置状态栏控件: statusStrip1的显示状态
78 /// 1. 处于勾选状态: 显示 statusStrip1 (statusStrip1.Visible = true;)
79 /// 2. 处于未勾选状态: 隐藏 statusStrip1 (statusStrip1.Visible = false;)
80 /// </summary>
81 /// <param name="sender"></param>
82 /// <param name="e"></param>
83 private void 状态栏ToolStripMenuItem_CheckedChanged(object sender, EventArgs e)
84 {
85 // 状态栏ToolStripMenuItem.Checked时, 返回true, 用于设置statusStrip1的Visible状态
86 statusStrip1.Visible = 状态栏ToolStripMenuItem.Checked;
87 }
88 #endregion
89
90 #region 工具栏菜单
91
92 /// <summary> 根据工具栏ToolStripMenuItem前面的【√】勾选状态, , 设置状态栏控件: toolStrip1的显示状态
93 /// 1. 处于勾选状态: 显示 toolStrip1 (toolStrip1.Visible = true;)
94 /// 2. 处于未勾选状态: 隐藏 toolStrip1 (toolStrip1.Visible = false;)
95 /// </summary>
96 /// <param name="sender"></param>
97 /// <param name="e"></param>
98 private void 工具栏ToolStripMenuItem_CheckStateChanged(object sender, EventArgs e)
99 {
100 // 工具栏ToolStripMenuItem.Checked时, 返回true, 用于设置statusStrip1的Visible状态
101 toolStrip1.Visible = 工具栏ToolStripMenuItem.Checked;
102 }
103
104 #endregion
105
106 private void contextMenuStrip2_Opening(object sender, CancelEventArgs e)
107 {
108 // 判断listBox1当前选中状态: 未选中 -1
109 if ( -1 == listBox1.SelectedIndex )
110 {
111 // 不显示上下文菜单(弹出菜单)
112 //e.Cancel = true;
113
114 // 禁用上下文菜单
115 添加ToolStripMenuItem1.Enabled = false;
116 编辑ToolStripMenuItem1.Enabled = false;
117 删除ToolStripMenuItem1.Enabled = false;
118
119 }
120 else
121 {
122 添加ToolStripMenuItem1.Enabled = true;
123 编辑ToolStripMenuItem1.Enabled = true;
124 删除ToolStripMenuItem1.Enabled = true;
125 }
126 }
127
128 private void 删除ToolStripMenuItem1_Click(object sender, EventArgs e)
129 {
130 string steel = "是否删除: " + listBox1.SelectedItem.ToString();
131 if (DialogResult.Yes == MessageBox.Show(steel,"提示: ",MessageBoxButtons.YesNo))
132 {
133 listBox1.Items.RemoveAt(listBox1.SelectedIndex);
134 }
135 }
136 }
137 }
