main : added some button examples and updated README

README.md

@@ -1,8 +1,12 @@
 # DearPyGui examples
 A collection of example scripts which demonstrate various features/functionality in DearPyGui.
 
+![Simple paint](assets/gifs/simple_paint.gif)
+![Progress bar](assets/gifs/progress_bar.gif)
+
 ## Examples
 
+- [Buttons](#buttons)
 - [Data binding](#data-binding)
 - [Drawing](#drawing)
     - [Simple paint](#simple-paint)
@@ -16,6 +20,9 @@ A collection of example scripts which demonstrate various features/functionality
     - [Progress bar](#progress-bar)
 - [Window](#window)
 
+## Buttons
+
+Examples of how to implement various types of buttons. This includes how to implement a button which changes colour when clicked and how to implement nested radio buttons.
 
 ## Data binding
 
@@ -29,8 +36,6 @@ Examples of how to use the drawing API.
 
 A very simple implementation of a paint app. It demonstrates how you can click and drag the mouse on a `dpg.add_drawlist` and draw basic free-form lines using `dpg.draw_line`.
 
-![Simple paint](assets/gifs/simple_paint.gif)
-
 ## Listbox
 
 Examples of custom listbox widgets which extend the functionality of the default listbox. Includes how to implement a listbox which is unselected by default and how to respond to key presses.
@@ -63,8 +68,6 @@ Examples of how to use threading in DearPyGui. Includes a start/stop button whic
 
 A basic progress bar with a start button. Once running, the start button changes to a pause button. The task can then be paused, upon which the pause button changes to a resume button and a reset button appears. 
 
-![Progress bar](assets/gifs/progress_bar.gif)
-
 ## Window
 
 Examples of how to manage windows. This includes how to create a window which is always on top and how to drag the viewport when `decorated=False`. Also includes restricting the position of a window and how to implement a clicked handler for child windows.

buttons/change_button_colour_when_clicked.py

@@ -0,0 +1,25 @@
+import dearpygui.dearpygui as dpg
+dpg.create_context()
+
+with dpg.theme() as button_clicked_theme:
+    with dpg.theme_component():
+        dpg.add_theme_color(dpg.mvThemeCol_Button, (255, 0, 0))
+        dpg.add_theme_color(dpg.mvThemeCol_ButtonHovered, (225, 0, 0))
+        dpg.add_theme_color(dpg.mvThemeCol_ButtonActive, (205, 0, 0))
+
+
+def toggle_button_colour(sender):
+    if dpg.get_item_theme(sender) == button_clicked_theme:
+        dpg.bind_item_theme(sender, None)
+    else:
+        dpg.bind_item_theme(sender, button_clicked_theme)
+
+with dpg.window():
+    dpg.add_button(label="Click me!", callback=toggle_button_colour)
+
+
+dpg.create_viewport(width=800, height=600, title="Change button colour when clicked")
+dpg.setup_dearpygui()
+dpg.show_viewport()
+dpg.start_dearpygui()
+dpg.destroy_context()

buttons/nested_radio_buttons.py

@@ -0,0 +1,52 @@
+import dearpygui.dearpygui as dpg
+dpg.create_context()
+
+buttons = {
+    "1": {"checked": True, "nested": {"1a":False, "1b":True, "1c":False, "1d":False}},
+    "2": {"checked": False, "nested": {}},
+    "3": {"checked": False, "nested": {"3a":True}},
+}
+
+def checkbox_callback(sender):
+    for button in buttons.keys():
+        if not button == sender:
+            buttons[button]["checked"] = False
+            dpg.set_value(button, False)
+        else:
+            buttons[button]["checked"] = True
+            if not dpg.get_value(sender):
+                dpg.set_value(sender, True)
+
+def radio_button_callback(sender):
+    for nested_button in buttons[sender.split("_")[0]]["nested"].keys():
+        buttons[sender.split("_")[0]]["nested"][nested_button] = False
+    buttons[sender.split("_")[0]]["nested"][dpg.get_value(sender)] = True
+
+with dpg.window():
+    for button, values in buttons.items():
+        dpg.add_checkbox(
+            tag=button,
+            label=button,
+            default_value=values["checked"],
+            callback=checkbox_callback,
+        )
+        if values["nested"]:
+            dpg.add_radio_button(
+                tag=button + "_nested",
+                items=list(values["nested"].keys()),
+                indent=24,
+                callback=radio_button_callback,
+            )
+            for nested_button, nested_values in values["nested"].items():
+                if nested_values:
+                    dpg.set_value(button + "_nested", nested_button)
+
+    dpg.add_spacer(height=20)
+    dpg.add_button(label="Print buttons state", callback=lambda: print(buttons))
+
+
+dpg.create_viewport(width=800, height=600, title="Nested Radio Buttons Demo")
+dpg.setup_dearpygui()
+dpg.show_viewport()
+dpg.start_dearpygui()
+dpg.destroy_context()