Enhancements to ms vista




















Presentation times increase during reverse playback. If the decoder does not have enough surfaces to hold all of the decoded frames, it might need to re-decode selected frames. By default, the DVD Navigator flushes the graph between rate changes. The DVD Navigator always time stamps samples for playback at 1x speed, regardless of the actual playback speed. The decoder must scale the time stamps on the decoded samples to match the actual playback speed.

As a result, when playing at speeds other than 1x, the time stamps on the decoded frames diverge from those on the encoded frames. In other words, the decoded frame should have the same time stamp as the input frame.

Timer resolution : Applications can request a minimum timer resolution by calling the timeBeginPeriod function. A higher resolution shorter period increases the system's responsiveness to periodic events, such as timeouts, but can also increase the frequency of thread context switches.

Messages are typically sent using the SendMessage function exported by the user As an example, the section on tree view controls in this column described how to enable multiple selections.

You can enable this same thing given a Windows Forms TreeView class using the following code:. The Windows Forms Control class provides the protected WndProc method that allows you to process specific messages as needed. Here is how you can handle a notification message in managed code:. Collapsing a group hides the list view items that belong to the group. The header and footer text are usually left-aligned; the subtitle always appears under the heading.

The task link is always right-aligned. You may use the anchor tag to create links within the text. Here is an example of a function that handles the notification message:. By default the message is displayed in the top-left corner of the list view.

The list view reports a user clicking a link in the same way as group task links. There are many more small features and enhancements that you will discover as you explore the Windows Vista controls with the help of the Windows SDK.

Many scenarios that previously required owner or custom drawing are now provided out of the box. Additionally, upcoming versions of Windows Template Library and MFC feature many improvements that allow you to more easily take advantage of the Windows Vista control improvements. Send questions and comments for Kenny to mmwincpp microsoft.

Kenny Kerr is a software craftsman specializing in software development for Windows. He has a passion for writing and teaching developers about programming and software design. You can reach Kenny at weblogs. This can reduce the print processing time for documents that have graphics-rich corporate logos and reduces the amount of data sent over the network to remote printers. Windows Color System Windows Color System WCS works with the Windows Vista print subsystem to provide a richer color-printing experience that supports widegamut printers inkjet printers that use more than four ink colors for lifelike printing of color photos and graphics-rich documents.

Print Management Print Management, a Microsoft Management Console MMC snap-in that was first included in Windows Server R2, is installed by default on Windows Vista, allowing administrators to manage printers, print servers, and print jobs easily across an enterprise. Print Management in Windows Vista has also been enhanced with new capabilities. This enables a service to access specific objects without running under a high-privilege account or lowering the security on the objects.

Service State Change Notifications. Services can register to be notified when a service is created, deleted, or has a change in status by using the NotifyServiceStatusChange function.

This is more efficient than calling the QueryServiceStatusEx function in a loop to poll for status. Session 0 Isolation. Services have always run in session 0. Before Windows Vista, the first user to log on was also assigned to session 0.

Now, session 0 is reserved exclusively for services and other applications not associated with an interactive user session. The first user to log on is connected to session 1, the second user to log on is connected to session 2, and so on.



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