/// <summary>
/// Event handler for key down of message textbox
/// Check if Ctrl+A is pressed, if yes, select all and suppress beep
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TxtMsg_KeyDown(object sender, KeyEventArgs e)
{
if (e.Control && e.KeyCode == Keys.A)
{
//Select all
TxtMsg.SelectAll();
//Suppress beep
e.Handled = true;
e.SuppressKeyPress = true;
}
}