diff --git a/bitmap2component/bitmap2cmp_gui_base.cpp b/bitmap2component/bitmap2cmp_gui_base.cpp
index c8857f3e11..764b153037 100644
--- a/bitmap2component/bitmap2cmp_gui_base.cpp
+++ b/bitmap2component/bitmap2cmp_gui_base.cpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////
-// C++ code generated with wxFormBuilder (version 3.9.0 Nov  1 2020)
+// C++ code generated with wxFormBuilder (version 3.9.0 Dec 30 2020)
 // http://www.wxformbuilder.org/
 //
 // PLEASE DO *NOT* EDIT THIS FILE!
@@ -211,6 +211,7 @@ BM2CMP_FRAME_BASE::BM2CMP_FRAME_BASE( wxWindow* parent, wxWindowID id, const wxS
 	m_buttonExportFile->Connect( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler( BM2CMP_FRAME_BASE::OnExportToFile ), NULL, this );
 	m_buttonExportClipboard->Connect( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler( BM2CMP_FRAME_BASE::OnExportToClipboard ), NULL, this );
 	m_rbOutputFormat->Connect( wxEVT_COMMAND_RADIOBOX_SELECTED, wxCommandEventHandler( BM2CMP_FRAME_BASE::OnFormatChange ), NULL, this );
+	m_sliderThreshold->Connect( wxEVT_SCROLL_CHANGED, wxScrollEventHandler( BM2CMP_FRAME_BASE::OnThresholdChange ), NULL, this );
 	m_sliderThreshold->Connect( wxEVT_SCROLL_THUMBTRACK, wxScrollEventHandler( BM2CMP_FRAME_BASE::OnThresholdChange ), NULL, this );
 	m_checkNegative->Connect( wxEVT_COMMAND_CHECKBOX_CLICKED, wxCommandEventHandler( BM2CMP_FRAME_BASE::OnNegativeClicked ), NULL, this );
 }
@@ -229,6 +230,7 @@ BM2CMP_FRAME_BASE::~BM2CMP_FRAME_BASE()
 	m_buttonExportFile->Disconnect( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler( BM2CMP_FRAME_BASE::OnExportToFile ), NULL, this );
 	m_buttonExportClipboard->Disconnect( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler( BM2CMP_FRAME_BASE::OnExportToClipboard ), NULL, this );
 	m_rbOutputFormat->Disconnect( wxEVT_COMMAND_RADIOBOX_SELECTED, wxCommandEventHandler( BM2CMP_FRAME_BASE::OnFormatChange ), NULL, this );
+	m_sliderThreshold->Disconnect( wxEVT_SCROLL_CHANGED, wxScrollEventHandler( BM2CMP_FRAME_BASE::OnThresholdChange ), NULL, this );
 	m_sliderThreshold->Disconnect( wxEVT_SCROLL_THUMBTRACK, wxScrollEventHandler( BM2CMP_FRAME_BASE::OnThresholdChange ), NULL, this );
 	m_checkNegative->Disconnect( wxEVT_COMMAND_CHECKBOX_CLICKED, wxCommandEventHandler( BM2CMP_FRAME_BASE::OnNegativeClicked ), NULL, this );
 
diff --git a/bitmap2component/bitmap2cmp_gui_base.fbp b/bitmap2component/bitmap2cmp_gui_base.fbp
index e1ee2709fc..d32f8e8311 100644
--- a/bitmap2component/bitmap2cmp_gui_base.fbp
+++ b/bitmap2component/bitmap2cmp_gui_base.fbp
@@ -1925,6 +1925,7 @@
                                             <property name="window_extra_style"></property>
                                             <property name="window_name"></property>
                                             <property name="window_style"></property>
+                                            <event name="OnCommandScrollChanged">OnThresholdChange</event>
                                             <event name="OnCommandScrollThumbTrack">OnThresholdChange</event>
                                         </object>
                                     </object>
diff --git a/bitmap2component/bitmap2cmp_gui_base.h b/bitmap2component/bitmap2cmp_gui_base.h
index dd67febb9d..034f795cdc 100644
--- a/bitmap2component/bitmap2cmp_gui_base.h
+++ b/bitmap2component/bitmap2cmp_gui_base.h
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////
-// C++ code generated with wxFormBuilder (version 3.9.0 Nov  1 2020)
+// C++ code generated with wxFormBuilder (version 3.9.0 Dec 30 2020)
 // http://www.wxformbuilder.org/
 //
 // PLEASE DO *NOT* EDIT THIS FILE!
@@ -79,7 +79,7 @@ class BM2CMP_FRAME_BASE : public KIWAY_PLAYER
 		wxRadioBox* m_rbPCBLayer;
 		wxStatusBar* m_statusBar;
 
-		// Virtual event handlers, overide them in your derived class
+		// Virtual event handlers, override them in your derived class
 		virtual void OnPaintInit( wxPaintEvent& event ) { event.Skip(); }
 		virtual void OnPaintGreyscale( wxPaintEvent& event ) { event.Skip(); }
 		virtual void OnPaintBW( wxPaintEvent& event ) { event.Skip(); }