C# TextArea.RaiseEvent方法代码示例

		const string LineSelectedType = "MSDEVLineSelect";  // This is the type VS 2003 and 2005 use for flagging a whole line copy
		
		public static bool ConfirmDataFormat(TextArea textArea, DataObject dataObject, string format)
		{
			var e = new DataObjectSettingDataEventArgs(dataObject, format);
			textArea.RaiseEvent(e);
			return !e.CommandCancelled;
		}

		static bool CopyWholeLine(TextArea textArea, DocumentLine line)
		{
			ISegment wholeLine = new SimpleSegment(line.Offset, line.TotalLength);
			string text = textArea.Document.GetText(wholeLine);
			// Ensure we use the appropriate newline sequence for the OS
			text = TextUtilities.NormalizeNewLines(text, Environment.NewLine);
			DataObject data = new DataObject();
			if (ConfirmDataFormat(textArea, data, DataFormats.UnicodeText))
				data.SetText(text);
			
			// Also copy text in HTML format to clipboard - good for pasting text into Word
			// or to the SharpDevelop forums.
			if (ConfirmDataFormat(textArea, data, DataFormats.Html)) {
				IHighlighter highlighter = textArea.GetService(typeof(IHighlighter)) as IHighlighter;
				HtmlClipboard.SetHtml(data, HtmlClipboard.CreateHtmlFragment(textArea.Document, highlighter, wholeLine, new HtmlOptions(textArea.Options)));
			}
			
			if (ConfirmDataFormat(textArea, data, LineSelectedType)) {
				MemoryStream lineSelected = new MemoryStream(1);
				lineSelected.WriteByte(1);
				data.SetData(LineSelectedType, lineSelected, false);
			}
			
			var copyingEventArgs = new DataObjectCopyingEventArgs(data, false);
			textArea.RaiseEvent(copyingEventArgs);
			if (copyingEventArgs.CommandCancelled)
				return false;
			
			try {
				Clipboard.SetDataObject(data, true);
			} catch (ExternalException) {
				// Apparently this exception sometimes happens randomly.
				// The MS controls just ignore it, so we'll do the same.
				return false;
			}
			textArea.OnTextCopied(new TextEventArgs(text));
			return true;
		}

		static bool CopySelectedText(TextArea textArea)
		{
			var data = textArea.Selection.CreateDataObject(textArea);
			var copyingEventArgs = new DataObjectCopyingEventArgs(data, false);
			textArea.RaiseEvent(copyingEventArgs);
			if (copyingEventArgs.CommandCancelled)
				return false;
			
			try {
				Clipboard.SetDataObject(data, true);
			} catch (ExternalException) {
				// Apparently this exception sometimes happens randomly.
				// The MS controls just ignore it, so we'll do the same.
			}
			
			string text = textArea.Selection.GetText();
			text = TextUtilities.NormalizeNewLines(text, Environment.NewLine);
			textArea.OnTextCopied(new TextEventArgs(text));
			return true;
		}