winforms qr code reader

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on the SocketAsyncEventArgs.Completed event. Once you have that wired up, you simply call the ConnectAsync() method, passing it your SocketAsyncEventArgs instance. socketArgs.Completed += new EventHandler<SocketAsyncEventArgs>(socketArgs_Completed); socket.ConnectAsync(socketArgs); The method for this event handler will first remove the event handler, and then it will examine the response from the socket server. If it is successful, it will send a stream of bytes from your TextBox control to the socket server through your established connection. void socketArgs_Completed(object sender, SocketAsyncEventArgs e) { e.Completed -= socketArgs_Completed; if (e.SocketError == SocketError.Success) { SocketAsyncEventArgs args = new SocketAsyncEventArgs(); args.SetBuffer(bytes, 0, bytes.Length); args.Completed += new EventHandler<SocketAsyncEventArgs>(OnSendCompleted); socket.SendAsync(args); } } Once again, since the calls to the socket are asynchronous, you wire up another event handler called OnSendCompleted, which will fire when your SendAsync() method is completed. This event handler will do nothing more than close the socket. void OnSendCompleted(object sender, SocketAsyncEventArgs e) { socket.Close(); } Although this seems pretty simple, it is complicated by client-access policy permissions. In the same way that a Silverlight application can call a web service on a separate domain only if it has the proper client-access policy permissions, a Silverlight application can call a socket server only if that server contains the proper client-access policy permissions. The following is an example of a clientaccess policy for a socket server: < xml version="1.0" encoding ="utf-8" > <access-policy> <cross-domain-access> <policy> <allow-from> <domain uri="*" /> </allow-from> <grant-to> <socket-resource port="4500-4550" protocol="tcp" /> </grant-to> </policy> </cross-domain-access> </access-policy>

You can easily implement such functionality using LinkedHashMap instead of Hashtable in listing 7.19. For details, see http://developer.java.sun.com/developer/JDCTechTips/2002/tt0709.html and http:// javaalmanac.com/egs/java.util/coll_Cache.html.

What happens with the image in the template is true for all the objects you add to the direct content. Everything that is added outside the boundaries of a PdfTemplate or a page will be present in the PDF, but you won t see it in a PDF viewer. It s important to understand that iText may change the way the image is compressed, but it doesn t remove pixels. In this case, the complete picture including the name of the festival sponsor in the lower half of the image will be in the PDF file, but it won t be visible when looking at the PDF document. If you aren t satisfied with a rectangle, you can define a clipping path.

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Creating a View from a Query............................................................................................................... 267 Getting Information About Views from the Data Dictionary .................................................................. 269 Replacing and Dropping Views............................................................................................................. 271

[UIView beginAnimations:nil context:NULL]; CGAffineTransform moveTransform = CGAffineTransformMakeTranslation(200, 200); [plane.layer setAffineTransform:moveTransform]; plane.layer.opacity = 1; [UIView commitAnimations];

Overview Next to device drivers, the hardest code to debug involves Microsoft Windows services and DLLs that load into services You might think that because services are really just usermode processes without a user interface, debugging them would be as easy as debugging a console application Unfortunately, the story isn't that simple In fact, so many issues come into play with Windows services and with DLLs that load into services, especially issues related to Windows security, that you might find yourself wanting to pull out your hair in frustration trying to work with them In the early days of Microsoft Windows NT, very few developers wrote services or even knew what they were However, in today's world of COM+, Microsoft Internet Information Services (IIS), Microsoft Exchange Server extensions, and Windows Clustering, many developers must start dealing with services and debugging them.

Many top-quality Excel presentations are as impressive as they are because they re tailored exactly to the needs and expectations of a specific target group or decision maker: a management team, a bank, etc . These presentations very often make use of supplementary data, control parameters, and scenario-specific specifications, none of which can be contained in a source system because they belong to the individual configuration of this one, key presentation and are developed and used exclusively for this purpose . In many instances, it isn t useful, appropriate, or even possible to use the master data in a presentation directly . Consider, for example, a typical scenario in which the results of data collection or of a survey are to be presented in a presentation chart . In this case, all kinds of groupings, aggregations, refinements, and calculations are required before the data collected can be showcased to ensure that the results can be even be represented or understood .

my $h = CGI->new(); open(OUT, ">$fn") or die "Cannot open $fn: $!"; print OUT $h->start_html( -title => $self->{title} || '', -bgcolor => '#ffffe7' ), $h->start_table( {-cellpadding => 10, -bgcolor =>

For bean-managed transaction beans Listing 5.2 contains a code section from a BMT bean business method that attempts to avoid a rollback.

SELECT id, val FROM dbo.T1 ORDER BY CAST('/' + REPLACE(val, ',', '/') + '/' AS HIERARCHYID);

So, to access a web site in this virtual directory, a user on the Internet would enter the following URL from a browser, assuming that Default.aspx existed:

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