The text not change while zooming

[QDMengChong]

Please see the gif. I use the WPF samlpe.

Thanks and Regards,

[JanusTida]

The text size is Screen-Pixel when using DrawText API,If you want to draw a text automatically scaled while zooming,you should use ICanvasScreenConverter.ToScreen(double unitvalue) to get the text in screen pixel in overrided Draw(ICanvas canvas) from DrawObject.