The Old New Thing

Autoscrolling on drag, part 5: Adding wiggle-to-scroll to escape velocity

January 29, 2021 Jan 29, 2021 01/29/21

Raymond Chen

Reintroducing a bug that's now a feature.

Autoscrolling on drag, part 4: Dynamic autoscroll based on escape velocity

January 28, 2021 Jan 28, 2021 01/28/21

Raymond Chen

Get a good running start.

Autoscrolling on drag, part 3: Dynamic autoscroll based on mouse position

January 27, 2021 Jan 27, 2021 01/27/21

Raymond Chen

Pull the rubber band more taut.

Autoscrolling on drag, part 2: Why does scrolling go faster if I wiggle the mouse?

January 26, 2021 Jan 26, 2021 01/26/21

Raymond Chen

You're tickling the adjustment code outside its normal cycle.

Autoscrolling on drag, part 1: Basic implementation

January 25, 2021 Jan 25, 2021 01/25/21

Raymond Chen

Setting the groundwork.

How do I protect myself against a COM call that can hang? I’m already running the server out-of-process.

January 22, 2021 Jan 22, 2021 01/22/21

Raymond Chen

You can cancel the call, and if the server ignores you, it's left working on a canceled operation.

What happens to the value returned from the function passed to Queue­User­Work­Item?

January 21, 2021 Jan 21, 2021 01/21/21

Raymond Chen

Nothing. Nothing at all.

How do I disassociate a thread from an I/O completion port?

January 20, 2021 Jan 20, 2021 01/20/21

Raymond Chen

Escaping the trap.

How can I prevent another program from showing a thumbnail preview in the taskbar?

January 18, 2021 Jan 18, 2021 01/18/21

Raymond Chen

You can't, really. It's not your window.