Addition of minimize

DemoPrograms/Demo_Titlebar_Custom_Dark_Theme.py

@@ -22,23 +22,38 @@ import PySimpleGUI as sg
 #
 # sg.theme_add_new('DarkGrey8', DarkGrey8)
 
+
+def dummy_window():
+    """
+    Creates an invisible window that is minimized to the taskbar
+    As soon as something happens to the window, it is closed and the function
+    returns.
+    The FocusIn event is set so that if the user restores the window from the taskbar, then the read
+    wille return, the window will be closed, and the function will return
+    """
+    layout = [[sg.T('You will not see this')]]
+    window = sg.Window('Window Title', layout, finalize=True, alpha_channel=0)
+    window.minimize()
+    window.bind('<FocusIn>', '-FOCUS-')
+    window.read(close=True)
+
+
 def title_bar(title):
     bg = sg.theme_input_background_color()
 
     return [sg.Col([[sg.T(title, background_color=bg )]], pad=(0, 0), background_color=bg),
-     sg.Col([[sg.Text('❎', background_color=bg, enable_events=True, key='Exit')]], element_justification='r', k='-C-', pad=(0, 0), background_color=bg)]
+     sg.Col([[sg.T('_', background_color=bg, enable_events=True, key='-MINIMIZE-'),sg.Text('❎', background_color=bg, enable_events=True, key='Exit')]], element_justification='r', k='-C-', pad=(0, 0), background_color=bg)]
 
 
 def main():
-    sg.theme('DarkGrey8') # Requires 4.28.0.4 or the code at the tiop
-    layout = [
-                title_bar('Window Title'),
+    sg.theme('DarkGrey8')
+    layout = [  title_bar('Window Title'),
                 [sg.T('This is normal window text.   The above is the fake "titlebar"')],
                 [sg.T('Input something:')],
                 [sg.Input(key='-IN-'), sg.Text(size=(12,1), key='-OUT-')],
                 [sg.Button('Go')]  ]
 
-    window = sg.Window('Window Title', layout, no_titlebar=True, grab_anywhere=True, keep_on_top=True, margins=(0,0), finalize=True)
+    window = sg.Window('Window Title', layout, resizable=True, no_titlebar=True, grab_anywhere=True, keep_on_top=True, margins=(0,0), finalize=True)
 
     window['-C-'].expand(True, False, False)
 
@@ -47,6 +62,10 @@ def main():
         print(event, values)
         if event == sg.WIN_CLOSED or event == 'Exit':
             break
+        if event == '-MINIMIZE-':
+            window.hide()
+            dummy_window()
+            window.un_hide()
         if event == 'Go':
             window['-OUT-'].update(values['-IN-'])
     window.close()