From 7530ed0a895455ad21bafac7b1c497cc6b6b8f4f Mon Sep 17 00:00:00 2001
From: PySimpleGUI <PySimpleGUI@PySimpleGUI.com>
Date: Fri, 3 Apr 2020 18:12:32 -0400
Subject: [PATCH] Another go at the scollable column (this time for sure!)

---
 PySimpleGUI.py | 37 ++++++++++++++++++++++++++-----------
 1 file changed, 26 insertions(+), 11 deletions(-)

diff --git a/PySimpleGUI.py b/PySimpleGUI.py
index 187d4039..0ccab25d 100644
--- a/PySimpleGUI.py
+++ b/PySimpleGUI.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 
-version = __version__ = "4.18.0.13  Unreleased - Print and MLine.Print fixed sep char handling, popup_get_date, icon parm popup_animated, popup button size (6,1), NEW CALENDAR chooser integrated, Graph.draw_lines, color chooser set parent window, scrollable column scrollwheel fixed, autoscroll parm for Multiline.print"
+version = __version__ = "4.18.0.14  Unreleased - Print and MLine.Print fixed sep char handling, popup_get_date, icon parm popup_animated, popup button size (6,1), NEW CALENDAR chooser integrated, Graph.draw_lines, color chooser set parent window, scrollable column scrollwheel fixed, autoscroll parm for Multiline.print"
 
 port = 'PySimpleGUI'
 
@@ -5092,8 +5092,6 @@ class TkFixedFrame(tk.Frame):
 # ---------------------------------------------------------------------- #
 #                          TkScrollableFrame (Used by Column)            #
 # ---------------------------------------------------------------------- #
-
-
 class TkScrollableFrame(tk.Frame):
     """
     A frame with one or two scrollbars.  Used to make Columns with scrollbars
@@ -5108,6 +5106,9 @@ class TkScrollableFrame(tk.Frame):
         """
         tk.Frame.__init__(self, master, **kwargs)
         # create a canvas object and a vertical scrollbar for scrolling it
+
+        # Okay, we're gonna make a list. Containing the y-min, x-min, y-max, and x-max of the frame
+
         self.vscrollbar = tk.Scrollbar(self, orient=tk.VERTICAL)
         self.vscrollbar.pack(side='right', fill="y", expand="false")
 
@@ -5136,14 +5137,28 @@ class TkScrollableFrame(tk.Frame):
         self.config(borderwidth=0, highlightthickness=0)
 
         # Canvas can be: master, canvas, TKFrame
-        if sys.platform.startswith('linux'):
-            self.canvas.bind('<4>', self.yscroll, add='+')
-            self.canvas.bind('<5>', self.yscroll, add='+')
-        else:
-            # Windows and MacOS
-            self.canvas.bind("<MouseWheel>", self.yscroll, add='+')
-            self.canvas.bind("<Shift-MouseWheel>", self.xscroll, add='+')
-        self.canvas.bind('<Configure>', self.set_scrollregion)
+
+        self.TKFrame.bind("<Enter>", self.hookMouseWheel)
+        self.TKFrame.bind("<Leave>", self.unhookMouseWheel)
+
+        # self.canvas.bind_all('<4>', self.yscroll,  add='+')
+        # self.canvas.bind_all('<5>', self.yscroll,  add='+')
+        # self.canvas.bind_all("<MouseWheel>", self.yscroll,  add='+')
+        # self.canvas.bind_all("<Shift-MouseWheel>", self.xscroll, add='+')
+
+        self.bind('<Configure>', self.set_scrollregion)
+
+    def hookMouseWheel(self, e):
+        self.TKFrame.bind_all('<4>', self.yscroll, add='+')
+        self.TKFrame.bind_all('<5>', self.yscroll, add='+')
+        self.TKFrame.bind_all("<MouseWheel>", self.yscroll, add='+')
+        self.TKFrame.bind_all("<Shift-MouseWheel>", self.xscroll, add='+')
+
+    def unhookMouseWheel(self, e):
+        self.TKFrame.unbind_all('<4>')
+        self.TKFrame.unbind_all('<5>')
+        self.TKFrame.unbind_all("<MouseWheel>")
+        self.TKFrame.unbind_all("<Shift-MouseWheel>")
 
     def resize_frame(self, e):
         self.canvas.itemconfig(self.frame_id, height=e.height, width=e.width)