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unosquare / libfprint-cs

The long-awaited C# (.net/mono) wrapper for the great fprint library
https://unosquare.github.io/libfprint-cs/
GNU Lesser General Public License v2.1
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Interop.fp_enroll_finger_img returning printDataPtr always null #7

Closed michaeljrs closed 5 years ago

michaeljrs commented 6 years ago

Hello, I'm trying to use the test project "Unosquare.Labs.LibFprint.Tests", but without success, it identifies and initializes the reader normally, but when trying to use the device.EnrollFingerprint ("enroll.pgm") command, the value of enrollResult.FingerprintData always returns NULL. Looking at the file FingerprintDevice.cs at line 173 with the code enrollResultCode = Interop.fp_enroll_finger_img (this.RealDevicePtr, out printDataPtr, out printImagePtr); , the return of printDataPtr is always NULL, what could be done to make it work?

stale[bot] commented 5 years ago

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.