Double click disabled

I am using xojo 2019r3.1.
Currently, 400 300 pixel video is being played on the movie player, but double-clicking on the movie player results in full screen display.
I want to keep the original size even if I double-click, but I don’t know how.
Can you please teach me somebody?

What platform are you targeting?

Thank you.

The platform is Windows.

I am making a desktop application for windows.