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    The Old New Thing

    October 2018 | The Old New Thing

    Dulce et decorum est pro patria party
    Dulce et decorum est pro patria party
    Raymond ChenRaymond ChenOctober 31, 2018Oct 31, 201810/31/18
    On April 2, 1996, at the then-named Computer Game Developers Conference, Microsoft introduced DirectX 2.0 to great fanfare. And by great fanfare, I mean "ridiculous fanfare." Read Jay Barnson's account of the event. Do it. I did not attend the party, but I did receive a surplus toga kit. I've donated it to the Microsoft archives. The ...

    Comments are closed.0History
    What happened to the Arial Unicode MS font?
    What happened to the Arial Unicode MS font?
    Raymond ChenRaymond ChenOctober 30, 2018Oct 30, 201810/30/18
    A customer wanted to know what happened to the Arial Unicode MS font. It used to be installed with Microsoft Office, but was dropped starting with Microsoft Office 2016. Various conspiracy theories have developed as to why. Wikipedia cites a Microsoft forum answer that says that When Microsoft included Arial Unicode MS with earlier versions ...

    Comments are closed.0History
    The case of the oplock deadlock poppycock
    The case of the oplock deadlock poppycock
    Raymond ChenRaymond ChenOctober 29, 2018Oct 29, 201810/29/18
    A customer reported that their application would sometimes hang trying to open a file. The call to Create­File would simply hang, rather than failing with ERROR_SHARING_VIOLATION or some other error code. One case where a Create­File can hang is when there is an oplock on the file that needs to be broken. Explorer takes an oplock on ...

    Comments are closed.0Other
    How do I prevent users from using the mouse to drag the trackbar thumb to positions that aren’t multiples of five? Part 2: Nudging the thumb position
    How do I prevent users from using the mouse to drag the trackbar thumb to positions that aren’t multiples of five? Part 2: Nudging the thumb position
    Raymond ChenRaymond ChenOctober 26, 2018Oct 26, 201810/26/18
    Last time, we investigated one approach to the problem of keeping a trackbar position on multiples of five: Just divide everything by five! (And then multiply by five when you read the value.) This works great, except that accessibility tools report the range as 0–20 in one-unit increments, even though you are presenting it to the user ...

    Comments are closed.0Code
    How do I prevent users from using the mouse to drag the trackbar thumb to positions that aren’t multiples of five? Part 1: Reframe the problem
    How do I prevent users from using the mouse to drag the trackbar thumb to positions that aren’t multiples of five? Part 1: Reframe the problem
    Raymond ChenRaymond ChenOctober 25, 2018Oct 25, 201810/25/18
    A customer had a trackbar common control, set the range to 0–100, set the line size to 5 (so that pressing an arrow key moves the thumb by five units), and set the page size to 20 (so that pressing the PgUp and PgDn keys move the thumb by twenty units). This ensures that the keyboard can set the trackbar position only to values that are ...

    Comments are closed.0Code
    Adding a Ctrl+arrow accelerator for moving the trackbar by just one unit, part 2: Second try
    Adding a Ctrl+arrow accelerator for moving the trackbar by just one unit, part 2: Second try
    Raymond ChenRaymond ChenOctober 24, 2018Oct 24, 201810/24/18
    Last time, we looked at how we could add support to the trackbar so that Ctrl+arrow moved the thumb by one unit, even if the line size was set to a larger value. We tried doing this by subclassing the control and adding additional keyboard handling, but this turned into a bit of a mess because of all the special cases in the trackbar to ...

    Comments are closed.0Code
    Adding a Ctrl+arrow accelerator for moving the trackbar by just one unit, part 1: Initial plunge
    Adding a Ctrl+arrow accelerator for moving the trackbar by just one unit, part 1: Initial plunge
    Raymond ChenRaymond ChenOctober 23, 2018Oct 23, 201810/23/18
    When you create a trackbar common control, you can specify how far the arrow keys will change the trackbar position (default: 1 unit) and how far the PgUp and PgDn keys will change the trackbar position (default: one fifth of the range). If you change the default distance for the arrow keys to, say, five units, then you probably want to add a...

    Comments are closed.0Code
    Why does the Entry Point Not Found error dialog sometimes not include the name of the missing entry point?
    Why does the Entry Point Not Found error dialog sometimes not include the name of the missing entry point?
    Raymond ChenRaymond ChenOctober 22, 2018Oct 22, 201810/22/18
    A customer observed that sometimes the Entry Point Not Found error dialog does not include the name of the missing entry point. Usually, it looks like this: Contoso.exe - Entry Point Not Found But sometimes it looks like this: Contoso.exe - Entry Point Not Found Why does the error message sometimes leave out the name of the ...

    Comments are closed.0Code
    File-extending writes are not always synchronous, which is entirely within the contract
    File-extending writes are not always synchronous, which is entirely within the contract
    Raymond ChenRaymond ChenOctober 19, 2018Oct 19, 201810/19/18
    I noted some time ago that the current implementation of NTFS forces certain kinds of writes to be synchronous, even when issued asynchronously. Note that this is an implementation decision which is not contractual. Formally, the rule is that any asynchronous operation is permitted (but not required) to complete synchronously. Malcolm Smith ...

    Comments are closed.0Code
    After reporting a non-responsive program to Windows Error Reporting, why does the process spawn a suspended child process?
    After reporting a non-responsive program to Windows Error Reporting, why does the process spawn a suspended child process?
    Raymond ChenRaymond ChenOctober 18, 2018Oct 18, 201810/18/18
    A customer observed that when they try to close a program as not responding, Windows Error Reporting kicks in, which is not unexpected. But what is unexpected is that a new process is created that is a child of the original process (as reported by Process Explorer), and the child is suspended. "Why does werfault.exe create this child process...

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