I'm trying to implement a feature to allow the Combo to scroll when pressing a keyboard key.
In particular, change the active entry to the first one starting with the letter typed in (this is quite useful when you have a long combo list).
I thought I should use the IO.InputCharacters API to consume the first character input by user.
To receive and read the input char I'm using:

// capture input while showing the popup
       SetActiveID(id, window);
       g.InputTextState.Id = id;
// ...
// get the first input char if any
       ImWchar inputChar = g.IO.InputCharacters[0];

within the combo popup code and it does the trick, but it disables the following mouse inputs.
What's the correct way to listen to user input in this case?
Thank you