GeUserArea search function

On 23/08/2015 at 04:54, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   15+ 
Platform:   Windows  ;   
Language(s) :     C++  ;

I want to create a search function inside GeUserArea , so if the user hit Space "or any other specified key" for example, it will popup a text field which can do search (I know how to do the search part, but I don't know the text field part), any ideas??