main : added loading indicator on startup example

misc/loading_indicator_on_startup.py

@@ -0,0 +1,26 @@
+import time
+import dearpygui.dearpygui as dpg
+dpg.create_context()
+
+def long_process():
+    for i in range(10):
+        time.sleep(1)
+        dpg.add_button(label=f"Button {i}", parent=main_window)
+
+def startup():
+    with dpg.window(modal=True, no_move=True, no_close=True, no_title_bar=True, no_resize=True) as loading_window:
+        dpg.add_text("Loading...")
+        dpg.add_loading_indicator()
+    long_process()
+    dpg.delete_item(loading_window)
+
+with dpg.window() as main_window:
+    pass
+
+dpg.set_frame_callback(1, startup)
+dpg.set_primary_window(main_window, True)
+dpg.create_viewport(width=800, height=600, title="Loading indicator on startup")
+dpg.setup_dearpygui()
+dpg.show_viewport()
+dpg.start_dearpygui()
+dpg.destroy_context()