Detecting Keypress Events

I'm fairly new to Mongoose and am customizing the Customer Order Picking form in Factory Track 6.01 to work more efficiently for picking large quantities of lot tracked items. I have set the scanner to append a carriage return to the end of each scan which takes me nicely to the next field. However, after I'm done scanning the QtyEdit field, I want to fire the ProcessClickEvent instead of moving to the next field.

I figured the best way would be to detect the carriage return and fire the ProcessClickEvent if the key press occurred in the QtyEdit field. Unfortunately, I cannot figure out a way to detect a keypress.

Any info on detection of a keypress or a better way to skin this cat would be greatly appreciated.

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Legacy Contributor

I would also love to know how to detect a key press but even more useful, I would love to know how to send key presses programmatically.

Stephen Cena

It is possible to detect keypressed, etc. I was looking into this to see if a user was "active" (mouse movement & keyboard input). These are the links I referenced:

www.kirupa.com/.../detecting_if_the_user_is_idle_or_inactive.htm

stackoverflow.com/.../detecting-mouse-moves-and-key-strokes-in-vb-net

www.youtube.com/watch

Depending on what you need, this MAY be overkill. I got it working in my test app.

I'm not sure about "sending" key pressed. I tended to lean on populating the Field on the form & then firing the corresponding event.

Hope this helps a little.

dean-bradko

I would be happy to show you how to send keystrokes. Start another thread and I'll answer it for you.

Edit: The method I have only works on the Windows Client and not on the Web Interface.

dmitchell

You could possibly handle the given process without detecting keypress events.

If the enter key is set to behave like tab and a CR takes you to the next field, you could set an event handler on the QtyEdit field's Data Change event. That handler could then generate the ProcessClickEvent, clear the value of the QtyEdit component (if need be) and set focus back to QtyEdit.

dean-bradko

Handling the DataChanged event was my first thought and would work great when scanning. However, I want the form to also be usable when doing manual data entry. That said, if I can not figure out how to detect the enter key from that one control, I'm going to have to resort to this as a backup plan.

dean-bradko

Ultimately, capturing keypress events doesn't really seem feasible. After throwing enough money in the swear jar, I think I could come up with a way of hooking events from the textbox, but it would only ever work on the WIndows client and not on the web interface which is what the end user will be using.

Legacy Contributor

We highly discourage the use of Keypress events as they can cause all kinds of issues that you don't want. The answer here is a the data change event being fired on completion of the Qty entry. If you need to detect what what component it is fired from using the ThisForm.CurComponent and then doing some validation. Additionally you can put a validator on the component which fires on entry to validate the value that has been entered. This can also trigger an event to be fired as well. lots of options here depending on what you wish to have occur but I would encourage you to read up on validators as there is alot of power in that part of the application that you can make use of.

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