richTextBox设置选中的字体属性

执行一次设置选中的字体样式再执行一次恢复正常

//粗体

public void ToggleBold()

{


    if (richTextBox1.SelectionFont == null)

        richTextBox1.SelectionFont = richTextBox1.Font;

    FontStyle style = richTextBox1.SelectionFont.Style;

    if (richTextBox1.SelectionFont.Bold)

        style &= ~FontStyle.Bold;//恢复正常

    else

        style |= FontStyle.Bold;

    richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);

}

斜体

public void ToggleItalic()

{

    if (richTextBox1.SelectionFont == null)

        richTextBox1.SelectionFont = richTextBox1.Font;

    FontStyle style = richTextBox1.SelectionFont.Style;

    if (richTextBox1.SelectionFont.Italic)

        style &= ~FontStyle.Italic;//恢复正常

    else

        style |= FontStyle.Italic;

    richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);

}

下划线

public void ToggleUnderLine()

{

    if (richTextBox1.SelectionFont == null)

        richTextBox1.SelectionFont = richTextBox1.Font;

    FontStyle style = richTextBox1.SelectionFont.Style;

    if (richTextBox1.SelectionFont.Underline)

        style &= ~FontStyle.Underline;//恢复正常

    else

        style |= FontStyle.Underline;

    richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);

}

巴特西

richTextBox设置选中的字体属性

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