The Old New Thing

My niece is just here for the food

November 7, 2022 Nov 7, 2022 11/7/22

Raymond Chen

The important part of the trip.

In the debugger, how can I get from a projected type back to the C++/WinRT implementation?

November 7, 2022 Nov 7, 2022 11/7/22

Raymond Chen

Look behind you.

Why am I getting a RPC_E_WRONG_THREAD exception when I’m on the right thread?

November 4, 2022 Nov 4, 2022 11/4/22

Raymond Chen

It's the wrong thread from XAML's point of view.

How does the dialog manager calculate the average width of a character?

November 3, 2022 Nov 3, 2022 11/3/22

Raymond Chen

It's a simple formula, perhaps too simple.

A history of the fd_set, FD_SETSIZE, and how it relates to WinSock

November 2, 2022 Nov 2, 2022 11/2/22

Raymond Chen

The fd_set started out as just a bitmap.

What is a “Select Administrator”? Is that some special elite kind of administrator?

November 1, 2022 Nov 1, 2022 11/1/22

Raymond Chen

It's two different messages that combine in an interesting way.

How can I test my geolocation code on a system without a GPS?

October 31, 2022 Oct 31, 2022 10/31/22

Raymond Chen

You can use the Windows Device Portal to create a synthetic GPS.

Setting properties in C++/WinRT is done by a function call, but you need to call the function the right way

October 28, 2022 Oct 28, 2022 10/28/22

Raymond Chen

The new value is the function parameter.

Why am I seeing two WRITE requests at the same offset from a single call to WriteFile?

October 27, 2022 Oct 27, 2022 10/27/22

Raymond Chen

It started as one write, but turned into a lot of other things.

What can or should I do with the cursor handle returned by SetCursor?

October 26, 2022 Oct 26, 2022 10/26/22

Raymond Chen

You can put it back, but sometimes you need to make sure you do it before anybody else can see the change.