Garbled file names in Tcl 9 on drag and drop

[apnadkarni]

Dragging the files source from demos/basic.tcl to demos/simple_target.tcl results in single char file names. Again, this is a result of sizeof(Tcl_UniChar) != sizeof(WCHAR) in Tcl 9. This assumption is quite prevalent in the code so quite a few changes will be needed.

I kind of assumed tkdnd was Tcl 9 ready based on some commit messages and earlier tickets. That assumption may be mistaken in which case this bug is premature and can be closed.

I can take a stab at doing the port (for Windows only!). Let me know.

[apnadkarni]

See PR #70 which fixes this along with other Tcl 9 breakage.

[petasis]

PR #70 has been merged. Can you please verify that the issue has been resolved?

[apnadkarni]

Verified demos with VS 2022 x64 using win/makefile.vc against 8.6.10 and 9.0.0. Note I don't use tkdnd so I do not have a specific application test. The original report was also based on demos.