Split from #976, related to #734.
Links claiming we can only have fixed size (32x32 or 64x64 on high dpi displays):
SM_CXCURSOR
: The width of a cursor, in pixels. The system cannot create cursors of other sizes.
SM_CYCURSOR
: The height of a cursor, in pixels. The system cannot create cursors of other sizes.
That said, I also found: (dead link: https://support.microsoft.com/en-us/kb/307213
was Windows XP icon and cursor support) which states: The system also provides the SetSystemCursor API function that you can use to change the system cursor for specific categories. You can use this function to set a cursor of any size. However, you must call the function programmatically, and you can only use it to set a cursor for a specific category. You cannot use it to make all cursors on the system the same size.
SetSystemCursor
changes are system-wide apparently, and those don't even work in windows 10.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/998