What if the interface is dead and flashes when Winform is refreshed?

This article mainly introduces the Winform refresh interface false death, flicker how to do, the article is very detailed, has a certain reference value, interested friends must read it!

1. Interface fake death

Start a new thread to do some calculations, and delegate to the form thread to update the interface only when the control is updated.

2.Winform flashes when refreshed

General

This.SetStyle (ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer | ControlStyles.ResizeRedraw, true)

Set double buffering, delayed refresh

In the case of OCC, when the robot frequently refreshes the screen, the form.Paint is declared to be called directly by public.

Note: calls to Refresh, Invalidate, and Update all empty the drawing before calling the Paint event, so there will be flickering.

OCC updates TopoDS objects, etc., do not need to be executed in the thread of Form, because the update is AIS_InteractiveObject, not the screen.

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