[vtkusers] How can I draw a PNG image in the corner of the renderwindow?

[leyouliu]

Hi all,

         How can I draw a PNG image in the corner of the renderwindow?

         And there are Prop3Ds behind that. I don't want the PNG image to be
controlled by mouse which is the Prop3D behind it.

         So it must be static, as well 3D model can move. It's a sign.

         Is there any method?

         Thank you for help.

Jia.Liu

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