The Old New Thing

Are Windows Runtime asynchronous operations guaranteed to complete?

March 27, 2020 Mar 27, 2020 03/27/20

Raymond Chen

As much as anything is guaranteed to complete.

If you say that your minimum requirements are the Universal contract, then you need to probe for anything beyond that

March 26, 2020 Mar 26, 2020 03/26/20

Raymond Chen

Reaching beyond your declaration.

How can I check whether a Windows Runtime object supports a member before I try to use it?

March 25, 2020 Mar 25, 2020 03/25/20

Raymond Chen

You can sniff at the metadata.

Accessing a member of a Windows Runtime class raises an Invalid­Cast­Exception / throws a hresult_no_interface, what does this mean?

March 24, 2020 Mar 24, 2020 03/24/20

Raymond Chen

It's interfaces under the hood.

Why not just share a single event across all critical section?

March 23, 2020 Mar 23, 2020 03/23/20

Raymond Chen

How will you know when the thundering herd has calmed down?

The security check happens at the acquisition of the handle

March 20, 2020 Mar 20, 2020 03/20/20

Raymond Chen

Once you buy a handle, it's yours to keep.

Further refinements to the attempt to create a type-dependent expression that is always false

March 19, 2020 Mar 19, 2020 03/19/20

Raymond Chen

It still falls down, but for stranger reasons.