Skip to main content
Microsoft
The Old New Thing
The Old New Thing
  • Home
  • DevBlogs
    • Visual Studio
    • Visual Studio Code
    • Visual Studio for Mac
    • DevOps
    • Developer support
    • CSE Developer
    • Azure SDK
    • IoT
    • Command Line
    • Perf and Diagnostics
    • Dr. International
    • Notification Hubs
    • Math in Office
    • DirectX
    • PIX
    • SurfaceDuo
    • Startups
    • Sustainable Engineering
    • C++
    • Java
    • Java Blog in Chinese
    • JavaScript
    • PowerShell Community
    • PowerShell Team
    • Python
    • Q#
    • TypeScript
    • Visual Basic
    • Visual C#
    • Visual F#
    • .NET
    • ASP.NET
    • NuGet
    • Xamarin
    • #ifdef Windows
    • Apps for Windows
    • Azure Depth Platform
    • Azure Government
    • Bing Dev Center
    • Microsoft Edge Dev
    • Microsoft Azure
    • Office 365 Development
    • Old New Thing
    • Windows MIDI and Music dev
    • Windows Search Platform
    • Azure Cosmos DB
    • Azure Data Studio
    • Azure SQL
    • OData
    • Revolutions R
    • SQL Server Data Tools

    The Old New Thing

    May 2015 | Page 2 of 3 | The Old New Thing

    MapGenericMask is just a convenience function for converting generic access to specific access, according to the instructions you provide
    MapGenericMask is just a convenience function for converting generic access to specific access, according to the instructions you provide
    Raymond Chen Raymond Chen May 15, 2015 May 15, 2015 05/15/15
    For some reason, people call the Map­Generic­Mask function in order to calculate what access mask to pass to request access to something. That's not what Map­Generic­Mask is for. The Map­Generic­Mask function is to assist the server side of the access, not the client side. As the documentation says, the Map­Generic...

    Comments are closed.0Code
    Low-level hooks have thread affinity, so make sure you keep an eye on the thread
    Low-level hooks have thread affinity, so make sure you keep an eye on the thread
    Raymond Chen Raymond Chen May 14, 2015 May 14, 2015 05/14/15
    A customer was having a problem with their automated testing tool. We have an automation testing tool that, among other things, installs a low-level mouse hook. Sometimes, the hook takes too long to process an action, and it gets unhooked. We have a watchdog thread that tries to detect when this has happened, and in response, it kicks off a ...

    Comments are closed.0Code
    Why don't you forward WM_GETMINMAXINFO and clamp the results?
    Why don't you forward WM_GETMINMAXINFO and clamp the results?
    Raymond Chen Raymond Chen May 13, 2015 May 13, 2015 05/13/15
    In my illustration of how to make a window resizable in only one direction, commenter Josua asks, "Why don't you forward WM_GET­MIN­MAX­INFO and clamp the results?" I'm going to assume the question is really "Why don't you forward WM_GET­MIN­MAX­INFO before clamping the results?" rather than "Why did you bother ...

    Comments are closed.0Code
    How does Task Manager compute Up Time, and why doesn't it agree with GetTickCount?
    How does Task Manager compute Up Time, and why doesn't it agree with GetTickCount?
    Raymond Chen Raymond Chen May 12, 2015 May 12, 2015 05/12/15
    Task Manager shows a piece of information called "Up time". How is this value calculated, and why doesn't it agree with the value reported by Get­Tick­Count/Get­Tick­Count64? Task Manager calculates "up time" by subtracting the system boot time from the current time. In other words, it is misnamed; it really should be called ...

    Comments are closed.0Tips/Support
    Can I run a service executable from a network location?
    Can I run a service executable from a network location?
    Raymond Chen Raymond Chen May 11, 2015 May 11, 2015 05/11/15
    A customer liaison wanted to know whether it is possible to run a service executable from a network location. The customer was doing so and running into problems, and they wanted to know whether it is a legal scenario. Running a service from a network location is a bad idea. If the computer lose network connectivity momentarily, the service ...

    Comments are closed.0Tips/Support
    Documentation creates contract, which is why you need to be very careful what you document
    Documentation creates contract, which is why you need to be very careful what you document
    Raymond Chen Raymond Chen May 8, 2015 May 8, 2015 05/8/15
    A person with a rude name asks, "Why does MS not document the system metrics used by classic/pre-uxtheme windows and common controls? This image is really useful and I wish all of this was actually documented." Actually, that picture explains why it isn't documented. Suppose such a picture existed in the Windows 2000 documentation. I don't ...

    Comments are closed.0Other
    Hidden message in a T-shirt, it's been done before
    Hidden message in a T-shirt, it's been done before
    Raymond Chen Raymond Chen May 7, 2015 May 7, 2015 05/7/15
    While everybody is trying to figure out the hidden message in Joe Belfiore's T-shirt,¹ I figure I'd give you an easier puzzle. Here is the pattern of 0's and 1's printed on the T-shirt handed given out at the Windows 8 kick-off meeting. Because you don't have a project until you have a T-shirt. The actual shirt clipped many of the...

    Comments are closed.0History
    Why is there an invisible U+202A at the start of my file name?
    Why is there an invisible U+202A at the start of my file name?
    Raymond Chen Raymond Chen May 6, 2015 May 6, 2015 05/6/15
    There's something strange about this property sheet page: To change permissions, click Edit. Edit... Advanced... For special permissions or advanced settings, click Advanced. Apply Cancel OK...

    Comments are closed.0Tips/Support
    What does it mean when the Advanced Security Settings dialog says that an ACE was inherited from "Parent Object" without naming the specific parent?
    What does it mean when the Advanced Security Settings dialog says that an ACE was inherited from "Parent Object" without naming the specific parent?
    Raymond Chen Raymond Chen May 5, 2015 May 5, 2015 05/5/15
    The Advanced Security Settings dialog shows the ACEs in an object's ACL, and one of the pieces of information is a column labeled Inherited from which identifies whether the ACE was inherited, and if so, from where. A customer observed that when they opened the Advanced Security Settings dialog, one of their objects had an ACE that showed ...

    Comments are closed.0Tips/Support
    Creating a window that can be resized in only one direction
    Creating a window that can be resized in only one direction
    Raymond Chen Raymond Chen May 4, 2015 May 4, 2015 05/4/15
    Today's Little Program shows a window that can be resized in only one direction, let's say vertically but not horizontally. Start with the scratch program and make these changes: We accomplish this by removing horizontal resize behavior from the left and right edges and corners. For the corners, we remove the horizontal resizing, but leave ...

    Comments are closed.0Code
    • Previous page
    • Page 1
    • Page 2
    • Page 3
    • Next page
    Archive
  • April 2021
  • March 2021
  • February 2021
  • January 2021
  • December 2020
  • November 2020
  • October 2020
  • September 2020
  • August 2020
  • July 2020
  • June 2020
  • May 2020
  • April 2020
  • March 2020
  • February 2020
  • January 2020
  • December 2019
  • November 2019
  • October 2019
  • September 2019
  • August 2019
  • July 2019
  • June 2019
  • May 2019
  • April 2019
  • March 2019
  • February 2019
  • January 2019
  • December 2018
  • November 2018
  • October 2018
  • September 2018
  • August 2018
  • July 2018
  • June 2018
  • May 2018
  • April 2018
  • March 2018
  • February 2018
  • January 2018
  • December 2017
  • November 2017
  • October 2017
  • September 2017
  • August 2017
  • July 2017
  • June 2017
  • May 2017
  • April 2017
  • March 2017
  • February 2017
  • January 2017
  • December 2016
  • November 2016
  • October 2016
  • September 2016
  • August 2016
  • July 2016
  • June 2016
  • May 2016
  • April 2016
  • March 2016
  • February 2016
  • January 2016
  • December 2015
  • November 2015
  • October 2015
  • September 2015
  • August 2015
  • July 2015
  • June 2015
  • May 2015
  • April 2015
  • March 2015
  • February 2015
  • January 2015
  • December 2014
  • November 2014
  • October 2014
  • September 2014
  • August 2014
  • July 2014
  • June 2014
  • May 2014
  • April 2014
  • March 2014
  • February 2014
  • January 2014
  • December 2013
  • November 2013
  • October 2013
  • September 2013
  • August 2013
  • July 2013
  • June 2013
  • May 2013
  • April 2013
  • March 2013
  • February 2013
  • January 2013
  • December 2012
  • November 2012
  • October 2012
  • September 2012
  • August 2012
  • July 2012
  • June 2012
  • May 2012
  • April 2012
  • March 2012
  • February 2012
  • January 2012
  • December 2011
  • November 2011
  • October 2011
  • September 2011
  • August 2011
  • July 2011
  • June 2011
  • May 2011
  • April 2011
  • March 2011
  • February 2011
  • January 2011
  • December 2010
  • November 2010
  • October 2010
  • September 2010
  • August 2010
  • July 2010
  • June 2010
  • May 2010
  • April 2010
  • March 2010
  • February 2010
  • January 2010
  • December 2009
  • November 2009
  • October 2009
  • September 2009
  • August 2009
  • July 2009
  • June 2009
  • May 2009
  • April 2009
  • March 2009
  • February 2009
  • January 2009
  • December 2008
  • November 2008
  • October 2008
  • September 2008
  • August 2008
  • July 2008
  • June 2008
  • May 2008
  • April 2008
  • March 2008
  • February 2008
  • January 2008
  • December 2007
  • November 2007
  • October 2007
  • September 2007
  • August 2007
  • July 2007
  • June 2007
  • May 2007
  • April 2007
  • March 2007
  • February 2007
  • January 2007
  • December 2006
  • November 2006
  • October 2006
  • September 2006
  • August 2006
  • July 2006
  • June 2006
  • May 2006
  • April 2006
  • March 2006
  • February 2006
  • January 2006
  • December 2005
  • November 2005
  • October 2005
  • September 2005
  • August 2005
  • July 2005
  • June 2005
  • May 2005
  • April 2005
  • March 2005
  • February 2005
  • January 2005
  • December 2004
  • November 2004
  • October 2004
  • September 2004
  • August 2004
  • July 2004
  • June 2004
  • May 2004
  • April 2004
  • March 2004
  • February 2004
  • January 2004
  • December 2003
  • November 2003
  • October 2003
  • September 2003
  • August 2003
  • July 2003
  • Relevant Links

    I wrote a book
    Ground rules
    Disclaimers and such
    My necktie's Twitter

    Categories

    Code
    History
    Tips/Support
    Other
    Non-Computer

    Stay informed

    Login
    Code Block
    What's new
    • Surface Duo
    • Surface Laptop Go
    • Surface Pro X
    • Surface Go 2
    • Surface Book 3
    • Microsoft 365
    • Windows 10 apps
    • HoloLens 2
    Microsoft Store
    • Account profile
    • Download Center
    • Microsoft Store support
    • Returns
    • Order tracking
    • Virtual workshops and training
    • Microsoft Store Promise
    • Financing
    Education
    • Microsoft in education
    • Office for students
    • Office 365 for schools
    • Deals for students & parents
    • Microsoft Azure in education
    Enterprise
    • Azure
    • AppSource
    • Automotive
    • Government
    • Healthcare
    • Manufacturing
    • Financial services
    • Retail
    Developer
    • Microsoft Visual Studio
    • Windows Dev Center
    • Developer Center
    • Microsoft developer program
    • Channel 9
    • Microsoft 365 Dev Center
    • Microsoft 365 Developer Program
    • Microsoft Garage
    Company
    • Careers
    • About Microsoft
    • Company news
    • Privacy at Microsoft
    • Investors
    • Diversity and inclusion
    • Accessibility
    • Security
    English (United States)
    • Sitemap
    • Contact Microsoft
    • Privacy
    • Manage cookies
    • Terms of use
    • Trademarks
    • Safety & eco
    • About our ads
    • © Microsoft 2021