Use a Scroll Bar in Java

Painting Data Matrix in Java Use a Scroll Bar

Use a Scroll Bar
Data Matrix ECC200 Drawer In Java
Using Barcode creation for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
Reading Data Matrix ECC200 In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
Key Ingredients
Paint Bar Code In Java
Using Barcode printer for Java Control to generate, create bar code image in Java applications.
Bar Code Decoder In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
Classes and Interfaces javaawteventAdjustmentEvent Methods Adjustable getAdjustable( ) int getValue( ) boolean getValueIsAdjusting( ) void adjustmentValueChanged( AdjustmentEvent ae) void addAdjustmentListener( AdjustmentListener al) int getValue( ) boolean getValueIsAdjusting( )
Create Data Matrix In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create DataMatrix image in .NET applications.
Data Matrix ECC200 Drawer In VS .NET
Using Barcode encoder for ASP.NET Control to generate, create Data Matrix image in ASP.NET applications.
javaawteventAdjustmentListener javaxswingJScrollBar
ECC200 Generation In .NET
Using Barcode creation for .NET framework Control to generate, create ECC200 image in Visual Studio .NET applications.
ECC200 Creator In VB.NET
Using Barcode printer for VS .NET Control to generate, create Data Matrix 2d barcode image in .NET framework applications.
A Swing scroll bar is an instance of JScrollBar Despite their many options, scroll bars are surprisingly easy to program Furthermore, often the default scroll bar provides precisely the right functionality Scroll bars come in two basic varieties: vertical and horizontal
Create Barcode In Java
Using Barcode creation for Java Control to generate, create barcode image in Java applications.
GTIN - 13 Creator In Java
Using Barcode creator for Java Control to generate, create GTIN - 13 image in Java applications.
8:
Draw Barcode In Java
Using Barcode creation for Java Control to generate, create bar code image in Java applications.
Barcode Encoder In Java
Using Barcode generation for Java Control to generate, create barcode image in Java applications.
Swing
Encoding GS1 - 8 In Java
Using Barcode generator for Java Control to generate, create GTIN - 8 image in Java applications.
gtin-13 check digit calculator excel
Using Barcode creation for Office Excel Control to generate, create GS1 - 13 image in Microsoft Excel applications. barcode generator excel 2016 gtin-13 check digit calculator excel
Although their orientation differs, both are handled in the same way This recipe shows the basic techniques needed to create and use a scroll bar
Bar Code Creator In Visual Studio .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create barcode image in Visual Studio .NET applications.
Data Matrix ECC200 Recognizer In .NET Framework
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
Step-by-Step
excel ean 128
Using Barcode generation for Excel Control to generate, create EAN128 image in Excel applications. excel ean 128
UPC-A Supplement 2 Generation In .NET
Using Barcode generation for Reporting Service Control to generate, create UPC Code image in Reporting Service applications.
To use a scroll bar involves these steps: 1 Create an instance of JScrollBar 2 Add an AdjustmentListener to handle the events generated when the scroll bar s slider is moved 3 Handle adjustment events by implementing adjustmentValueChanged( ) 4 If appropriate to your application, use getValueIsAdjusting( ) to wait until the user has stopped moving the scroll bar 5 Obtain the scroll bar s value by calling getValue( )
Bar Code Scanner In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
Data Matrix Drawer In Objective-C
Using Barcode creator for iPhone Control to generate, create ECC200 image in iPhone applications.
Discussion
It is useful to begin by reviewing key aspects of the scroll bar A scroll bar is actually a composite of several individual parts At each end are arrows that you can click to change the current value of the scroll bar one unit in the direction of the arrow The current value of the scroll bar relative to its minimum and maximum values is indicated by position of the thumb The thumb can be dragged by the user to a new position This new position then becomes the current value of the scroll bar The scroll bar s model will then reflect this value Clicking on the bar (which is also called the paging area) causes the thumb to jump in that direction by some increment that is usually larger than 1 Typically, this action translates into some form of page up and page down In Swing, a scroll bar is one of three related components: JScrollBar, JSlider, and JProgressBar These components all share a central theme: a visual indicator that moves through a predefined range Because of this, these components are based on the same model, which is encapsulated by the BoundedRangeModel interface Although we won t need to use the model directly, it defines the basic operation of all three components A key aspect of BoundedRangeModel is that it defines four important values: Minimum Maximum Current Extent The minimum and maximum values define the endpoints of the range over which a component based on the BoundedRangeModel can operate The current value of the component will be within that range In general, the extent represents the conceptual width of a sliding element that moves between the endpoints of the component For example, in the scroll bar, the extent corresponds to the width (or thickness ) of the scroll bar s slider box BoundedRangeModel enforces a relationship between these four values First, the minimum must be less than or equal to the maximum The current value must be greater
Herb Schildt s Java Prog ramming Cookbook
than or equal to the minimum value The current value plus the extent must be less than or equal to the maximum value Thus, if you specify a maximum value of 100 and an extent of 20, then the current value can never be larger than 80 (which is 100 20) You can specify an extent of 0, which enables the current value to be anywhere within the range specified by the minimum and maximum, inclusive JScrollBar also implements the Adjustable interface This interface is defined by the AWT JScrollBar defines three constructors The first creates a default scroll bar: JScrollBar( ) This creates a vertical scroll bar that uses the default settings for the initial value, extent, minimum, and maximum They are:
Copyright © OnBarcode.com . All rights reserved.