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Audio recorder with Qt 4.5. How to tell the recording loop to stop recording using pushbutton?

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Hi, I am developing a program for embedded device (Blackfin BF548). The program needs an audio recorder build in it. Currently, I am able to record sounds into an audio file. But the problem is, I cannot stop recording when I need it to. I tried QThread using the method (here) [mayaposch.wordpress.com]. But the thread will only quit after while loop ends, which is never. And terminate() is a bad idea. Any solutions?Or does anyone has similar example codes? Please note: The embedded version of Qt I have is Qt 4.5. Thanks. Kind regards, Wen

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