From c9ea25eed66816cbf661fdfbcc3ef1f13205cfdd Mon Sep 17 00:00:00 2001
From: Mark Schloeman <markofwisdumb@gmail.com>
Date: Sat, 15 May 2021 20:24:02 -0400
Subject: [PATCH] SpinBox in dec mode sets minStep to step as fallback

---
 pyqtgraph/widgets/SpinBox.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pyqtgraph/widgets/SpinBox.py b/pyqtgraph/widgets/SpinBox.py
index b1c72668..88cc02a6 100644
--- a/pyqtgraph/widgets/SpinBox.py
+++ b/pyqtgraph/widgets/SpinBox.py
@@ -223,6 +223,10 @@ class SpinBox(QtGui.QAbstractSpinBox):
 
             if 'format' not in opts:
                 self.opts['format'] = asUnicode("{value:d}{suffixGap}{suffix}")
+
+        if self.opts['dec']:
+            if self.opts.get('minStep') is None:
+                self.opts['minStep'] = self.opts['step']
         
         if 'delay' in opts:
             self.proxy.setDelay(opts['delay'])