Replied 24 August 2018, 1:55 am EST
As you already know, the ShowTopicForActiveControl method shows topic for the active control (currently in focus). When a component (derived from Component class and not from Control class) inside C1InputPanel control is focused, then the active control at this moment is C1InputPanel only. This is why you are seeing help topic for C1InputPanel control itself, on focusing any of its components.
Now, in order to show help topic for focused component in C1InputPanel, you can try ShowTopic method of C1DynamicHelp in GotFocus event of the component.
private void InputButton1_GotFocus(object sender, EventArgs e)
Here, you can check condition(s) for showing help topic as per your needs.