Keeping GUIs responsive during long-running tasks

Question

Keeping the GUI responsive while the application does some CPU-heavy processing is one of the challenges of effective GUI programming.

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Answer 1

I use threads so the GUI's main event loop never blocks.

Answer 2

I think delayedresult is what you are looking for:

http://www.wxpython.org/docs/api/wx.lib.delayedresult-module.html

See the wxpython demo for an example.

Answer 3

Working with Qt/C++ for Win32.

We divide the major work units into different processes. The GUI runs as a separate process and is able to command/receive data from the "worker" processes as needed. Works nicely in todays multi-core world.