continued in .NET

Get Denso QR Bar Code in .NET continued
continued
Visual .net qr code 2d barcode drawer for .net
using .net vs 2010 topaint denso qr bar code in asp.net web,windows application
Part III
decoding qr-code on .net
Using Barcode scanner for .NET Control to read, scan read, scan image in .NET applications.
Programming Silverlight Applications
Bar Code integrating for .net
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LISTING 8.23 }
Barcode barcode library in .net
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(continued)
QR Code barcode library in visual c#.net
using vs .net togenerate denso qr bar code in asp.net web,windows application
logicalPoint.Y);
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private void ShowAllClick(object sender, RoutedEventArgs e) { this.msi.ViewportOrigin = new Point(0, 0); this.msi.ViewportWidth = 1; ZoomFactor = 1; } private void zoomInClick(object sender, RoutedEventArgs e) { Zoom(1.2, new Point(this.ActualWidth / 2, this.ActualHeight / 2)); } private void zoomOutClick(object sender, RoutedEventArgs e) { Zoom(.8, new Point(this.ActualWidth / 2, this.ActualHeight / 2)); } } }
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The code in Listing 8.24 is a C# helper file that is generated by Deep Zoom Composer to provide mouse wheel event support that is used in Listing 8.23.
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LISTING 8.24
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C# File That Implements Mouse Wheel Event Handling Functionality
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using using using using using using using using using using using System; System.Net; System.Windows; System.Windows.Controls; System.Windows.Documents; System.Windows.Ink; System.Windows.Input; System.Windows.Media; System.Windows.Media.Animation; System.Windows.Shapes; System.Windows.Browser;
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Programming .NET Silverlight Applications
Integrate usd-4 for .net
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namespace multiScale { // Courtesy of Pete Blois public class MouseWheelEventArgs : EventArgs { private double delta; private bool handled = false; public MouseWheelEventArgs(double delta) { this.delta = delta; } public double Delta { get { return this.delta; } } // Use handled to prevent the default browser behavior! public bool Handled { get { return this.handled; } set { this.handled = value; } } } public class MouseWheelHelper { public event EventHandler<MouseWheelEventArgs> Moved; private static Worker worker; private bool isMouseOver = false; public MouseWheelHelper(FrameworkElement element) { if (MouseWheelHelper.worker == null) MouseWheelHelper.worker = new Worker(); MouseWheelHelper.worker.Moved += this.HandleMouseWheel; element.MouseEnter += this.HandleMouseEnter; element.MouseLeave += this.HandleMouseLeave; element.MouseMove += this.HandleMouseMove; }
Barcode 3 Of 9 barcode library in .net
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continued
read barcode in java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
Part III
Control datamatrix data on excel
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Programming Silverlight Applications
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LISTING 8.24
Control ean 128 image with visual c#
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(continued)
Barcode barcode library with .net
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private void HandleMouseWheel(object sender, MouseWheelEventArgs args) { if (this.isMouseOver) this.Moved(this, args); } private void HandleMouseEnter(object sender, EventArgs e) { this.isMouseOver = true; } private void HandleMouseLeave(object sender, EventArgs e) { this.isMouseOver = false; } private void HandleMouseMove(object sender, EventArgs e) { this.isMouseOver = true; } private class Worker { public event EventHandler<MouseWheelEventArgs> Moved; public Worker() { if (HtmlPage.IsEnabled) { HtmlPage.Window.AttachEvent( DOMMouseScroll , this.HandleMouseWheel); HtmlPage.Window.AttachEvent( onmousewheel , this.HandleMouseWheel); HtmlPage.Document.AttachEvent( onmousewheel , this.HandleMouseWheel); } } private void HandleMouseWheel(object sender, HtmlEventArgs args)
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Programming .NET Silverlight Applications
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{ double delta = 0; ScriptObject eventObj = args.EventObject; if (eventObj.GetProperty( wheelDelta ) != null) { delta = ((double)eventObj.GetProperty( wheelDelta ))/120;
if (HtmlPage.Window.GetProperty( opera ) != null) delta = -delta; } else if (eventObj.GetProperty( detail ) != null) { delta = -((double)eventObj.GetProperty( detail )) / 3; if (HtmlPage.BrowserInformation.UserAgent.IndexOf( Macintosh ) != -1) delta = delta * 3; } if (delta != 0 && this.Moved != null) { MouseWheelEventArgs wheelArgs = new MouseWheelEventArgs(delta); this.Moved(this, wheelArgs); if (wheelArgs.Handled) args.PreventDefault(); } } } } }
The results of the application defined in Listings 8.22, 8.23, and 8.24 are shown in Figure 8.12. When the application starts, the multiscale image is loaded, the text of the loadText control is loaded, and the image can be resized using the button controls and the mouse.
Part III
Programming Silverlight Applications
FIGURE 8.12 Silverlight application that implements a MultiScaleImage control to dynamically resize a high resolution image
Summary
In this chapter, we first discussed how to access the XAML elements in your .NET code using their namescope names. Then we covered adding and removing XAML objects using code-behind pages. Next, we covered the various types of event handlers and how to use them to implement mouse and keyboard events as well as handling program events such as the MediaElement Completed event. Finally, we discussed how to use .NET code to control and create animations for objects.
Programming .NET Silverlight Applications
In this chapter, you learned how to: n Access an XAML object in the namescope n Add and remove XAML objects using .NET code n Implement application events n Implement control events n Implement mouse and keyboard events n Implement drag-and-drop functionality n Create animations dynamically n Implement Deep Zoom images to Silverlight applications
Programming Silverlight Applications with JavaScript
hen Silverlight 1.0 was released, unmanaged JavaScript was the only method of adding event handling and other functionality to applications. Using unmanaged JavaScript creates some limitations and the .NET model discussed in 8 and the DLR discussed in 11 are typically better models to use. However, you can still create very robust Silverlight applications using unmanaged JavaScript. In fact unmanaged Javascript may be a much better choice in some situations. For example, if you would like to add a splash screen to your Web page using Silverlight, then unmanaged JavaScript is the best programming model. This chapter helps you understand how to use unmanaged JavaScript to programmatically control the design and flow of your Silverlight applications. The following sections introduce the JavaScript relationship to Silverlight and discuss how to use JavaScript to dynamically access and manipulate the content in a Silverlight application.