#NUMERIC KEYBOARD HOW TO#
#NUMERIC KEYBOARD FREE#

I didn't quite understand which platform you're working on. I should warn you, tho, that I pretty much only work on Winforms, so I don't know that much about iPhones. I'll often only color the borders, so it doesn't get too overwhelming. I've also used yellow/orange (warning, but not critical alert) and purple (optional), but I try to keep these to a minimum. I don't like to turn it into crayola central or anything, but I found that a scheme of red (alert), green (OK or continue), and blue (general use) work pretty well.

#NUMERIC KEYBOARD FREE#

I'm sure you'll want to modify them (hell, they're free and done on my spare time), but should help a bit.Īlso, I recommend utilizing colors. I'll tell you what, I'll spend some time this weekend throwing a few components together, explain them, and post as a separate article. I actually try to support both, but consider the scrolling buttons the necessity. The reason is that scrolling with your finger is fun, but quickly gets tired, especially on a larger screen.

This is important because in my experience when you have the space, it pays to add a 'Scroll up' and 'Scroll down' button, especially if there could be large collections of buttons. I assume since it's a POS / kiosk solution you're working on, you're using a screen of at least decent size (say 14' minimum). I don't have a collection of components freely available, most were built for and are owned by someone else. I'll admit it's low-level, but if you want properly handle things like clipboard operations, editing keys, and so on, it's the simplest way to go. If the physical keyboard is active at the same time as the on-screen keyboard, you pretty much have to simulate keypresses from the on-screen keyboard using the SendInput API call. Consider this: handling the keypress in the up event lets you change your mind, but how often do you do that with a keyboard? You hit backspace, fix it, and go on. Doing things in the up event works, but users may find it vaguely uncomfortable and may not be able to articulate why. If you're handling this using mouse events (common with most touch screens), you need to take action on the mouse down event rather than the up event.

This means that they expect the character to appear when the key is pressed, not when it's released. The user expects the on-screen keyboard to behave like the real one. My products have supported on-screen keyboards for ten years or so, and I've made the following observations: I liked your article please consider the following food for thought, rather than criticism. The data (which we creatively named data for the sample). For the numeric buttons, the pad simply concatenates the digit onto the variable holding Handling the individual button is nothing special.This is especially important when using a bolt-on touchscreen addition,

Or MouseClick events, you give the user an opportunity to move their finger. Either way, by handling the MouseUp event instead of the MouseDown Maybe they have fat fingers like me, or maybe they're just a spaz. The reason for this is people frequently miss the button they're intending to hit. I've found that it's best to handle the MouseUp events.

Starting with the NumericKeypad, it's a basic keypad, handling the click events.

There's two parts to the code, the tsNumericKeypad, which is the actual interface, and the tsNumericKeypadTest. Why use a numeric keypad? Simply because this interface is used the most frequently across the environments we've designed for.

#NUMERIC KEYBOARD HOW TO#

Recently, people (locally) have been asking how to begin writing for a touchscreen. Why reinvent the wheel? For the last few years, I've needed to create various touchscreen interfaces for a warehouse environment. It is solely intended as a starting pointįor someone looking to develop a touchscreen application wondering how to get started.

This is not intended to be an in-depth discussion of UI principles, nor good programming practices. This article is intended to demonstrate how to create a touchscreen interface for WinForms, using a numeric keypad as an example.

Numeric keyboard