It seems to me that without a looping timer countdown with short intervals of wait, there is not and real mixing of the wait command with buttons. From some of the other software I tend to use this feature intensively for better feedback and response from the user and the program.

Example:

show("Stroke your cock until I tell you to stop")
wait(60)
User_Input = getSelectedValue("Stroke your cock until I tell you to stop" , ["Resist","Stroke","Edge","Cum"])

If the user was needing to hit the "Edge" or "Cum" button, I typically do not want them to have to wait for the timer to complete before it becomes an option, nor wait for the timer to complete after they have clicked the button. If I really worked at it I could probably come up with a routine to make this work, but it would be really nice to have this as a one line feature such as:

User_Input = wait_with_input("Stroke your cock until I tell you to stop" , ["Resist","Stroke","Edge","Cum"])

This can't be for every blocking function of the API, so it was added only to showButton()
You can do something like this :