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Fatal error appear every time when use SetQTF [message #36622]

Thu, 21 June 2012 14:42

akebee
Messages: 90
Registered: August 2011
Location: China

Member

	for(;;) 
	{
	//	GuiLock __;
		if(Thread::IsShutdownThreads())
			break;
		
		String last = view.GetQTF();
		String now = last + "&[8 [@4 show the qtf string ] ]";
		view.SetQTF(now);
		view.ScrollEnd();
		
		Sleep(20);
	
	}

I use above thread to set the richtextview,but the fatal error
appear every time when i lauch it! Please tell me whoat`s wrong.

Attachment: fatal error.jpg
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Re: Fatal error appear every time when use SetQTF [message #36623 is a reply to message #36622]

Thu, 21 June 2012 17:06

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Well, first of all, commenting out // GuiLock is wrong.

I guess you might have done this because it seemed to be frozen - it would be no wonder as GuiLock, as written, would cover Sleep call, leaving virtually no chance for main thread to run...

First of all, try:

	for(;;) 
	{
                {
		GuiLock __;
		if(Thread::IsShutdownThreads())
			break;
		
		String last = view.GetQTF();
		String now = last + "&[8 [@4 show the qtf string ] ]";
		view.SetQTF(now);
		view.ScrollEnd();
		}
		Sleep(20);
	
	}

[Updated on: Thu, 21 June 2012 17:07]

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Re: Fatal error appear every time when use SetQTF [message #36625 is a reply to message #36622]

Thu, 21 June 2012 17:18

akebee
Messages: 90
Registered: August 2011
Location: China

Member

er...but if i uncomment the GuiLock__, the program will be very slowly!!!!

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Re: Fatal error appear every time when use SetQTF [message #36630 is a reply to message #36625]

Thu, 21 June 2012 20:56

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

akebee wrote on Thu, 21 June 2012 11:18

er...but if i uncomment the GuiLock__, the program will be very slowly!!!!

Have you tried with putting that Sleep out of block?

Do you understand an explanation why it was slow?

Mirek

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Re: Fatal error appear every time when use SetQTF [message #36632 is a reply to message #36630]

Thu, 21 June 2012 23:36

akebee
Messages: 90
Registered: August 2011
Location: China

Member

mirek,i finally aware of you add the brackets before the Sleep,

		      	{
					GuiLock __;
					if(Thread::IsShutdownThreads())
						break;
					
					String last = view.GetQTF();
					String now = last + "&[8 [@4 show the qtf string ] ]";
					view.SetQTF(now);
					view.ScrollEnd();
				}
				Sleep(20);

so the ~GuiLock() have changce to run......and it works well this time. Smile

[Updated on: Fri, 22 June 2012 00:00]

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