numericinput

► TECA Inc.

14600 S.E. Center St.
Portland, OR 97236 USA

Tel: 503-901-6335
FAX: 503-761-6334

e-mail: sales@teca.com
URL: http://www.teca.com

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The TECA NumericInput Control is an edit box control that can only accept numeric input. This control is superior to other do-it-yourself input validation controls in that it can be configured to advance the cursor on the Enter key and allow decimal-less numeric entry exactly like an AS/400 or UNIX host allows. This makes it possible to write highly efficient data entry applications that act very much like their host counterparts -- making it very easy for host users to adapt to your Windows-based data entry application. All of the cursor movement and error reporting provided by this control is highly configurable.

In addition, this control offers rules-based data validation and is capable of firing a Validation event subroutine allowing you to add your own custom validation code.

The following form presents a sample of the NumericInput control.

This control appears very much like the standard TextBox control. However, its advanced properties allow you to easily setup custom data entry and validation functions that are not provided by the standard TextBox control. The following screen shot shows a sample of the data validation functions that can be access from the General Tab of its Custom Property pages.

On the General tab you can see settings that allow you to specify the maximum number of digits that will be allowed by the control as well as the implied number of decimal positions. The Number Value box allows you to specify a minimum and maximum value that will be allowed by the control. The Advance field key property allows you to cause the cursor to be advanced when the user presses the Tab key, the Enter or either key. The Negative Sign property can optionally place a minus sign either before or after the data value entered by the user. The Zero fill property allows the control to fill all unused numeric places with zeros -- either before the decimal place, after the decimal place or both. The Format property can be used to automatically add a percent or dollar sign as a part of the data value entered. All of the settings on the General Property Page are optional. You can elect to use as few or as many of them as you want.

In addition to the data entry and validation properties provided on the General tab, the Appearance tab is used to control the border, text alignment and right/left justification of the data that's entered. While the Color and Font tabs are used to customize the foreground and background colors as well as setting the text size and font that will be displayed by the control.