Switching from Mouse to pointer

Description of the Problem, or Question?

When I start the program. The mouser works correctly, but I can not switch to Wacon table pointer. Is there any way or command for it?

Basic System Details

Windows 10 w/tablet wacon CTH-470
MyPaint version:
My paint64

Operating System + Version:

Make and Model # of Graphic Tablet:

Please Tell Us How to Reproduce the Problem in Steps.

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