Question about input from virtual keyboard.

[yyang]

Hi, I run into a problem and need your help.
I created a 3D virtual keyboard that allow users to click on the virtual keys to input information. When user hits the virual "Enter" key, the entered string will be saved in a variable. My applicaiton uses HMD, it's not convenient for user to use the physical keyboard.

My problem is, when I use this virtual keyboard in my system, how can I make my program wait (halt) until the virtual "return" key is pressed (just like the viz.input())? I tried to use event, viztask and signal system to do the synchronization, but somehow can't make it work.
Please give me some help.

Thanks,