Michael Van Canneyt schrieb:


On Sun, 9 Oct 2011, Hans-Peter Diettrich wrote:

Mattias Gaertner schrieb:
On Sun, 09 Oct 2011 10:49:31 +0200
Hans-Peter Diettrich <[email protected]> wrote:

[...]
The LCL is not reentrant.

Most LCL code is reentrant.

Only within the context of an single thread.

This was acceptable on traditional single-CPU/core machines, but nowadays non-visual components, and also parts of a GUI, should be manageable in different (dedicated) threads.

It's not so on Unix. X-Windows is definitely not thread-safe.

I also have not seen any claims from Microsoft that the GDI controls are thread-safe,

True, widgetsets typically are not threadsafe, that's not the problem. Remember an recent thread, where e.g. a progress bar could be attached to and served by an thread, independently from the main application GUI. The same for data modules...

DoDi


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