Camera Hacker


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different image file names

I have been trying to use code to take a string entered by the user and put it into the file name of the image something like this

CString filenamez=strcat("C:\directorywhatever\",strByUser);

err = EdsCreateFileStream(filenamez,kEdsFileCreateDisposition_CreateAlways, kEdsAccess_ReadWrite, &stream);

however this isn't working and gives me strange errors when i take the picture from the UI any thoughts?

Tue, 15 Jun 2010 12:30:53 +0000

Unhandled exception at 0x0052bb7d in CameraControl.exe: 0xC0000005: Access violation reading location 0x00000020.

is the error

Tue, 15 Jun 2010 12:52:11 +0000

I'm guessing that the EdsCreateFileStream function couldn't write the stream and threw an exception due to a number of possible reasons:

  1. directory doesn't exist
  2. no write permission
  3. ran out of disk space
  4. file name contains illegal characters
  5. stream is null

It's too bad the error message isn't very helpful. Is it possible to catch the exception and read out the exact error message from the exception? That will probably pin-point to the exact problem.

Chieh Cheng
Tue, 15 Jun 2010 14:17:27 +0000

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