step 3: add widget shell sizing and frame pump

examples/hidden_tab.py

@@ -0,0 +1,27 @@
+from typing import Any
+
+import dearpygui.dearpygui as _dpg
+
+import dpg_map as dpgm
+
+dpg: Any = _dpg
+
+
+def main() -> None:
+    dpg.create_context()
+    dpg.create_viewport(title="dpg-map hidden tab", width=900, height=600)
+
+    with dpg.window(label="Hidden Tab Sizing", width=-1, height=-1), dpg.tab_bar():
+        with dpg.tab(label="First"):
+            dpg.add_text("Switch to the map tab.")
+        with dpg.tab(label="Map"), dpgm.map_widget(tag="map-hidden-tab", width=-1, height=500):
+            dpgm.add_marker("tab-marker", lat=35.0, lon=139.0)
+
+    dpg.setup_dearpygui()
+    dpg.show_viewport()
+    dpg.start_dearpygui()
+    dpg.destroy_context()
+
+
+if __name__ == "__main__":
+    main()