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Re: DnD hangs in MT Refresh()ing [message #24877 is a reply to message #24848]

Tue, 02 February 2010 19:15

mirek is currently offline

mirek
Messages: 13976
Registered: November 2005

Ultimate Member

kohait00 wrote on Mon, 01 February 2010 08:52

hi mirek, just to be sure:

in Win32Wnd
in Create0 and ProcessEvent
you put and left a
ASSERT(IsMainThread());
..

is that really nesseccary? cause there might be cases where another thread starts to execute a dialog, or shouldnt that happen (because thats bad design, good would be gui = main thread)

cheers

I believe it is ok - another thread can never execute a dialog DIRECTLY.

See explanation above - it is because all messages are associated with a thread that created the window (by Win32). That is the reason we need all that stupid machinery of "calling to the main thread" - if non-main thread wants to create a window, it is done by Call or ICall -> this puts the request for the main thread, which, when idle (event queue empty), adopts a request and performs it. Non-main thread waits blocked by semaphor, main thread releases the semaphor when request finished. That way, all windows are created by the main thread and all message loops are performed by the main thread too...

Mirek

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[Message index]

		DnD hangs in MT Refresh()ing By: kohait00 on Thu, 28 January 2010 16:58
		Re: DnD hangs in MT Refresh()ing By: mirek on Thu, 28 January 2010 23:55
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 00:22
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 08:45
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 09:32
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 10:31
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 11:17
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 11:28
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 11:46
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 11:57
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 11:58
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 12:48
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 12:30
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 10:34
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 13:08
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 13:21
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 13:32
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 14:49
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 16:40
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 19:43
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Mon, 01 February 2010 14:52
		Re: DnD hangs in MT Refresh()ing By: mirek on Tue, 02 February 2010 19:15
		Re: DnD hangs in MT Refresh()ing By: mirek on Wed, 03 February 2010 12:32
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Thu, 04 February 2010 12:37
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 05 February 2010 10:43
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Mon, 08 February 2010 21:55

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