Help - How to start event after enter is press in the keyboard?

Hello, I am trying to create a simple billing app. Is there any way I could start an event after I input the quantity number so it would automatically display the subtotal? Without any button.

You could use @Taifun 's TextBox extension and use Enter Pressed Listener or Set Icon for Enter button on soft keyboard for a textbox. In that way when enter pressed or Done create a procedure to display subtotal


Thank you so much! That is exactly the block i need.

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