Use Thread to update UI

a_du

i want to create a status dlg which can display the status of a process, for example transfer files. i find that use user created thread to control UI often causes crashes or make system hung. so i have to change to using timer. is user created thread not allowed to control UI display?

sayup

hello, I also have a similar kind of problem.I need to update data from my UI(dialog box with some controls).So aren't user interface threads not of use?Did you try the OnTimer function? Tell me if it works?

a_du

my boss told me that user created thread cannot be used for updating the UI data. i am wondering wheather it is true as i never see this in MSDN. timer works properly. i think the other way is to use event, but i have tried this way

PJ Arends

http://www.codeproject.com/threads/usingworkerthreads.asp[^]

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David Crow

a_du wrote: is user created thread not allowed to control UI display? No. Since the secondary thread does not own the UI or the message pump, it has no choice but to post a message to the main thread indicating that something needs to be updated.

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