added draw_rounded_rect_with_border_vertical_split() function to DrawEngine

test/manual_integration_tests/test_combobox.py

@@ -0,0 +1,30 @@
+from tkinter import *
+
+ws = Tk()
+ws.title('PythonGuides')
+ws.geometry('400x300')
+ws.config(bg='#F2B90C')
+
+def display_selected(choice):
+    choice = variable.get()
+    print(choice)
+
+countries = ['Bahamas','Canada', 'Cuba','United States']
+
+# setting variable for Integers
+variable = StringVar()
+variable.set(countries[3])
+
+# creating widget
+dropdown = OptionMenu(
+    ws,
+    variable,
+    *countries,
+    command=display_selected
+)
+
+# positioning widget
+dropdown.pack(expand=True)
+
+# infinite loop
+ws.mainloop()