private void InputFormText_KeyDown(object sender, KeyEventArgs e) { //Ctrl + A if (e.Control && e.KeyCode == Keys.A) { e.SuppressKeyPress = true; //beep disabled InputFormText.SelectAll(); } }
//改行タグを挿入 private void do_insert_br() { string buff = InputFormText.Text; int cnt = buff.Length; int st = InputFormText.SelectionStart; int ed = InputFormText.SelectionLength; string front_txt = buff.Substring(0, st); string back_txt = buff.Substring(st + ed); InputFormText.Text = front_txt + br_sp + back_txt; InputFormText.Select(st + ed + br_sp.Length, 0); }