Windows APIs

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Use the Cassia .NET Library to Detect Users Connected to Windows Server by Deepak Choudhari Thanks to the Cassia .NET Library, you can programmatically detect the users connected to Windows Server without using PInvoke to call the Windows Terminal Services API.
Build One Application Version for Both Windows XP and Windows Vista by Shao Voon You don't have to compile two different versions to get applications that run correctly under both Windows XP and Windows Vista.
Using SetForegroundWindow on Windows Owned by Other Processes by Alexander Ocher Find out how to specify which window should appear in the foreground—even if it's running on a different thread.
Open Any File from Code by Pavana Shireesha Using the Windows ShellExecute API, you can run any application or open any file whose extension is associated with an application.
Fast Way to Create and Send Email by Loris Marcon Take advantage of the installed mail client to simplify sending email from VB.
Truncate a Path String by Srinath MS Currently, there is no .NET class that provides this functionality. The workaround is to use the Windows Shell function (PathCompactPathEx).
Set the Computer's Name Through .NET by Srinath MS Learn how to set your computer's name using the SetComputerName function, which is available in kernel32.dll
Associate a File Extension to a Program by Andre Portugal This tip is an addendum to a previous tip demonstrating how to use CreateFileAssociation to associate a file extension.
Make Your Mouse Pointer Tremble by Frederico Cebrian To make your mouse pointer appear to be trembling, you first create a form with ScaleMode = 3 - Pixel. Then use the code in this tip.
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