119 lines
4.4 KiB
C#
119 lines
4.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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namespace ryProcessManager.hezuo
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{
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public partial class ContextMenuStripRichText : ContextMenuStrip
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{
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public ContextMenuStripRichText()
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{
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InitializeComponent();
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AddMenu("撤销", "undo").Click += Undo_Click;
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AddMenu("重做", "redo").Click += Redo_Click;
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AddSeparatorMenu();
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AddMenu("剪切", "cut").Click += Cut_Click;
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AddMenu("复制", "copy").Click += Copy_Click;
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AddMenu("粘贴", "paste").Click += Paste_Click;
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AddMenu("删除", "del").Click += Del_Click;
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AddMenu("全选", "selectall").Click += SelectAll_Click;
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}
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private void SelectAll_Click(object sender, EventArgs e)
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{
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if (!(base.SourceControl is RichTextBox)) { return; }
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var rich_txt = (RichTextBox)base.SourceControl;
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rich_txt.SelectAll();
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}
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private void Undo_Click(object sender, EventArgs e)
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{
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if(!(base.SourceControl is RichTextBox)) { return; }
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var rich_txt = (RichTextBox)base.SourceControl;
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rich_txt.Undo();
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}
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private void Redo_Click(object sender, EventArgs e)
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{
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if (!(base.SourceControl is RichTextBox)) { return; }
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var rich_txt = (RichTextBox)base.SourceControl;
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rich_txt.Redo();
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}
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private void Cut_Click(object sender, EventArgs e)
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{
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if (!(base.SourceControl is RichTextBox)) { return; }
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var rich_txt = (RichTextBox)base.SourceControl;
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rich_txt.Cut();
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}
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private void Copy_Click(object sender, EventArgs e)
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{
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if (!(base.SourceControl is RichTextBox)) { return; }
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var rich_txt = (RichTextBox)base.SourceControl;
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rich_txt.Copy();
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}
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private void Paste_Click(object sender, EventArgs e)
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{
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if (!(base.SourceControl is RichTextBox)) { return; }
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var rich_txt = (RichTextBox)base.SourceControl;
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rich_txt.Paste();
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}
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private void Del_Click(object sender, EventArgs e)
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{
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if (!(base.SourceControl is RichTextBox)) { return; }
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var rich_txt = (RichTextBox)base.SourceControl;
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rich_txt.SelectedText="";
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}
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private ToolStripSeparator AddSeparatorMenu()
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{
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ToolStripSeparator item = new ToolStripSeparator();
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base.Items.Add(item);
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return item;
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}
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private ToolStripMenuItem AddMenu(string name, string tag)
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{
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ToolStripMenuItem item = new ToolStripMenuItem(name)
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{
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Tag = tag
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};
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base.Items.Add(item);
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return item;
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}
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private void ContextMenuStripRichText_Opening(object sender, CancelEventArgs e)
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{
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if (!(base.SourceControl is RichTextBox)) { return; }
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var rich_txt = (RichTextBox)base.SourceControl;
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for (int i = 0; i < base.Items.Count; i++)
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{
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var item = base.Items[i];
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if (item.Tag == null) { continue; }
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switch(item.Tag.ToString())
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{
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case "undo":
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item.Enabled = rich_txt.CanUndo;
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break;
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case "redo":
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item.Enabled = rich_txt.CanRedo;
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break;
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case "cut":
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item.Enabled = (rich_txt.SelectedText != "" && !rich_txt.ReadOnly) ? true : false;
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break;
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case "copy":
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item.Enabled = rich_txt.SelectedText != "" ? true : false;
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break;
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case "paste":
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item.Enabled = rich_txt.CanPaste(DataFormats.GetFormat(DataFormats.Text));
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break;
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case "del":
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item.Enabled =(rich_txt.SelectedText != "" && !rich_txt.ReadOnly) ? true : false;
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break;
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case "selectall":
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item.Enabled = rich_txt.SelectedText != rich_txt.Text ? true : false;
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break;
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}
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}
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}
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}
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}
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