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Keyboard Support

Telerik RadRichTextEditor for WinForms supports shortcuts. There are default key-bindings defined for the most widely used operations, namely:

Action Hotkey
Copy Ctrl+C
Paste Ctrl+V
Cut Ctrl+X
Delete Delete
Undo Ctrl+Z
Redo Ctrl+Y
InsertLineBreak Shift+Enter
InsertPageBreak Ctrl+Enter
ToggleBold Ctrl+B, Ctrl+Shift+B
ToggleItalic Ctrl+I, Ctrl+Shift+I
ToggleSuperscript Ctrl+'+'
ToggleSubscript Ctrl+Shift+'+'
ToggleUnderline Ctrl+U
ClearFormatting Ctrl+Space
ChangeTextAlignment with parameter RadTextAlignment.Justify Ctrl+J
ChangeTextAlignment with parameter RadTextAlignment.Right Ctrl+R
ChangeTextAlignment with parameter RadTextAlignment.Left Ctrl+L
ChangeTextAlignment with parameter RadTextAlignment.Center Ctrl+E
SelectAll Ctrl+A
MoveCaret with parameter MoveCaretDirections.Previous Left Arrow
MoveCaret with parameter MoveCaretDirections.Next Right Arrow
MoveCaret with parameter MoveCaretDirections.PreviousWord Ctrl+Left Arrow
MoveCaret with parameter MoveCaretDirections.NextWord Ctrl+Right Arrow
MoveCaret with parameter MoveCaretDirections.Up Upper Arrow
MoveCaret with parameter MoveCaretDirections.Down Down Arrow
MoveCaret with parameter MoveCaretDirections. ParagraphStart Ctrl+Upper Arrow
MoveCaret with parameter MoveCaretDirections. ParagraphEnd Ctrl+Down Arrow
MoveCaret with parameter MoveCaretDirections.Home Home
MoveCaret with parameter MoveCaretDirections.DocumentStart Ctrl+Home
MoveCaret with parameter MoveCaretDirections.End End
MoveCaret with parameter MoveCaretDirections.DocumentEnd Ctrl+End
MoveCaret with parameter MoveCaretDirections.PageUp PageUp
MoveCaret with parameter MoveCaretDirections.PageDown PageDown
ShowFindReplaceDialog Ctrl+F
ShowFontPropertiesDialog Ctrl+D
ShowInsertHyperlinkDialog Ctrl+K

Now, these key shortcuts can be overridden and customized to the liking of the user. This can be achieved by creating a custom RichTextEditorInputBehavior descendant:


public class MyInputBehavior : Telerik.WinForms.RichTextEditor.RichTextEditorInputBehavior
{
    public MyInputBehavior(RadRichTextBox editor) : base(editor)
    {
    }
    protected override void PerformCopyOperation(System.Windows.Forms.KeyEventArgs e)
    {
        base.PerformCutOperation(e);
    }      
}

Public Class MyInputBehavior
    Inherits Telerik.WinForms.RichTextEditor.RichTextEditorInputBehavior
    Public Sub New(ByVal editor As RadRichTextBox)
        MyBase.New(editor)
    End Sub
    Protected Overrides Sub PerformCopyOperation(ByVal e As System.Windows.Forms.KeyEventArgs)
        MyBase.PerformCutOperation(e)
    End Sub
End Class

The default behavior can be changed like this:


radRichTextEditor1.InputHandler = new MyInputBehavior(radRichTextEditor1.RichTextBoxElement);

radRichTextEditor1.InputHandler = New MyInputBehavior(radRichTextEditor1.RichTextBoxElement)

Another way to customize the control behavior is to use the PreviewEditorKeyDown event. For example, pressing RightAlt causes Control and Alt to be sent as arguments to the PreviewKeyDown event. Thus, RightAlt+E triggers a formatting command for paragraph alignment instead of inputting the ę character. In that case, you can handle the PreviewEditorKeyDown event in the following way:


void RichTextBoxElement_PreviewEditorKeyDown(object sender, PreviewEditorKeyEventArgs e)
{
    if ((Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift)))
    {
        e.SuppressDefaultAction = true;
    }
}

Private Sub RichTextBoxElement_PreviewEditorKeyDown(ByVal sender As Object, ByVal e As PreviewEditorKeyEventArgs)
    If (Keyboard.IsKeyDown(Key.LeftShift) OrElse Keyboard.IsKeyDown(Key.RightShift)) Then
        e.SuppressDefaultAction = True
    End If
End Sub

See Also

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