Program crashes in recorder.dll

Discussion in 'Questions (Windows Mobile)' started by HARRY, Mar 8, 2008.

  1. HARRY

    HARRY Active Member Licensed User

    Hi Erel,

    My recorder program crashes in the statement WaveIn.Save(RecPath & Now & ".wav"). The recording, however, is correctly saved. The error message is NullReferenceException.

    In my program the recording can be stopped in two ways, either by the user clicking a button or by the program itself.

    The elapsed time of the recording is monitored by the program using a timer and is compared with the maximum set in the statement WaveIn.Start(Duration*1000). When the maximum is reached, the program stops the recording

    In both cases a routine is called which executes the the following two statements:

    WaveIn.Stop
    WaveIn.Save(RecPath & Now & ".wav")

    The error occurs only when the user stops the recording, so before the maximum recording time has elapsed. When the program stops the recording everything is OK.

    The detailed error information I got when running in debug mode on the device is:

    Basic4PPC.exe
    NullReferenceException
    at WaveFile.InitBuffer()
    at WaveFile.BlockDone()
    at SoundMessageWindow.WndProc()
    bij (dutch for at) Microsoft.WindowsCE.Forms.MessageWindow._WndProc()
    bij Microsoft.AGL.Forms.EVL.EnterMainLoop()
    bij System.Windows.Forms.Application.Run()
    bij Dbasic.Form1.Main()

    Any idea what is going wrong?

    Harry
     
  2. Erel

    Erel Administrator Staff Member Licensed User

  3. HARRY

    HARRY Active Member Licensed User

    Erel,

    The demonstation program runs well. Only an error, but totally different, when I press Stop_Save twice. However, when I change the recording time to be WaveIn.Start(100000) , so 10 times longer, and then make a short recording, the same error occurs as I mentioned in my first message.

    Harry
     
  4. Erel

    Erel Administrator Staff Member Licensed User

    I've sent you an update which should solve this problem.
    Please tell me if it did solve it.
     
  5. HARRY

    HARRY Active Member Licensed User

    Hi Erel,

    Thanks for your quick support. Now it works fine!:sign0060:

    Harry
     
  6. Erel

    Erel Administrator Staff Member Licensed User

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