Error Access Violation on m_FPM.GetImage() function

Symptom:

Already copied the library into the system folder. The fingerprint can be detected on PC when running the Test tool provided to test the fingerprint device. The problem occurred when calling the API functions Capture.

Issue:

Got error when capturing the fingerprint. During the error occurs, the fingerprint scanner LED is always ON. The errors are as per below:

Solution:

Check the variable initialization before running any API functions. In this case, need to check whether user has already preset the image height and width.