Primary Window

The primary window fills the viewport, resizes with the viewport and remains behind other windows.

A window can be set as the primary window by using the set_primary_window command using the required True/False allows the window to be set or unset.

import dearpygui.dearpygui as dpg

dpg.create_context()

with dpg.window(tag="Primary Window"):
    dpg.add_text("Hello, world")

dpg.create_viewport(title='Custom Title', width=600, height=200)
dpg.setup_dearpygui()
dpg.show_viewport()
dpg.set_primary_window("Primary Window", True)
dpg.start_dearpygui()
dpg.destroy_context()