On most windows programs, when you hover over a text field, the tablet input panel icon pops up.

This allows you to open up the input panel to write into the text field with your own handwriting. This doesn't work with either Inkscape or GIMP. Without a keyboard, I have no way to input numbers into fields, such as stroke width, and end up having to hold down the little arrows for a really long time. I assume this is because Inkscape/GIMP use a linux base instead of the windows api.
Is there any workarounds for this? Specifically, is there any way to use the windows tablet input panel with Inkscape/Gimp?