Re: deleting variable for playing audio results in crash
"Rehmet" <rgnurrahmat@gmail.com> wrote in message
news:82714253-6b5d-4464-9317-a55a07d1f9bd@l28g2000prd.googlegroups.com...
Hi Guys,
I would like to get some insights here why when I delete a variable on
playing audio which is
Initialization:
play1=new PlaySound1(this);
play1->CreateThread();
Play:
record->PostThreadMessage(WM_RECORDSOUND_STARTRECORDING,0,0);
play1->PostThreadMessage(WM_PLAYSOUND_STARTPLAYING,0,0);
Stop:
record->SuspendThread();
record->PostThreadMessage(WM_RECORDSOUND_STOPRECORDING,0,0);
play1->PostThreadMessage(WM_PLAYSOUND_STOPPLAYING,0,0);
Deleting:
if(play1->Playing!=-17891602) //the number means whether the variable
still exist or not
{
play1->ExitInstance();
delete play1;
}
it will give me crash on:
msacm32.drv!72d12dc5()
[Frames below may be incorrect and/or missing, no symbols loaded for
msacm32.drv]
kernel32.dll!7c80b683()
I looked up on the Internet , it says MSACM32.DRV responsible for
WAVEMAPPER.
Ok, since the crash didn't point me to my own code, I am still
wondering, what's wrong?
Thanks.
Just calling ExitInstance() is not enough to stop the thread. Further,
ExitInstance() should be called from it's own thread, not from another as
here. Instead, replace
play1->ExitInstance();
with something like:
play1->PostQuitMessage(0);
if play1 (which I assume is a CWinThread) has m_bAutoDelete = TRUE (which by
default it is), then it will delete itself and you shouldn't delete it
again.
-- David