onDraw property Null safety

SignatureDrawCallback? onDraw
final

Called when a stroke is updated on the SfSignaturePad.

This snippet shows how to set onDraw callback in SfSignaturePad.

SfSignaturePad(
  onDraw: (offset, time) {
    Offset offsetValue = offset;
    DateTime dateTime = time;
  },
 );

Implementation

final SignatureDrawCallback? onDraw;