選択部分のフォントを変更して、これを複数のRichTextBoxで同期させます。
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public partial class SyncRichTextBox : UserControl { void SetFont(Font newFont, Color newColor) { int start = SelectionStart; int length = SelectionLength; List<FontInfo> fontInfos = new List<FontInfo>(); RichTextBox r = new RichTextBox(); r.SelectedRtf = SelectedRtf; if (newFont != null) { r.SelectAll(); r.SelectionFont = newFont; } if (newColor != Color.Empty) { r.SelectAll(); r.SelectionColor = newColor; } r.SelectAll(); string rtf = r.SelectedRtf; r.Dispose(); if (SelectedRtf == rtf) return; if (SetSelectedRtf(rtf, "SetFontAndColor")) { var buf = Data.GetUndobuf(); buf.newSelectionStart = start; buf.newSelectionLength = length; SelectionStart = start; SelectionLength = length; } } public Font SelectionFont { get { return richTextBoxEx1.SelectionFont; } set { SetFont(value, Color.Empty); } } } |
