void ChatHistoryNext()
{
if (chatPointer == chatHistory.Count) return;
chatPointer++;
if (chatPointer == chatHistory.Count)
{
cbxInput.Text = string.Empty;
return;
}
cbxInput.Text = chatHistory[chatPointer];
cbxInput.SelectionStart = cbxInput.Text.Length;
cbxInput.SelectionLength = 0;
}