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The Old New Thing
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Latest posts
Last updated about 13 hours ago
Sure, xor’ing a register with itself is the idiom for zeroing it out, but why not sub?
about 15 hours ago
Matt Godbolt, probably best known for being the proprietor of Compiler Explorer...
How did code handle 24-bit-per-pixel formats when using video cards with bank-switched memory?
1 day ago
On the topic of what happens if an access violation straddles multiple...
Forgotten message from the past: LB_INITSTORAGE
5 days ago
The classic Win32 list box control lets you preallocate memory in anticipation...
What’s up with window message 0x0091? We’re getting it with unexpected parameters
6 days ago
A customer, via their customer liaison, reported quite some time ago that...
Why is there a long delay between a thread exiting and the WaitForSingleObject returning?
7 days ago
A customer reported that they were using the WaitForSingleObject function to wait...
Why was there a red telephone at every receptionist desk?
8 days ago
Some time ago, I noted that there was a walkthrough of the...
Finding a duplicated item in an array of N integers in the range 1 to N − 1
9 days ago
A colleague told me that there was an O(N) algorithm for finding...
How do you add or remove a handle from an active WaitForMultipleObjects?, part 2
12 days ago
Last time, we looked at adding or removing a handle from an...
How do you add or remove a handle from an active WaitForMultipleObjects?
13 days ago
Last time, we looked at adding or removing a handle from an...
How do you add or remove a handle from an active MsgWaitForMultipleObjects?
14 days ago
A customer had a custom message loop that was built out of...
Were there any Windows 3.1 programs that were so incompatible with Windows 95 that there was no point trying to patch them?
15 days ago
In a comment to my discussion of the Windows 95 patch system...
Learning to read C++ compiler errors: Illegal use of -> when there is no -> in sight
16 days ago
A customer reported a problem with a system header file. When they...