Moves the user's cursor to a position within the current disassembled file(s), represented by ea. opnum is the X coordinate that the cursor will be moved to, or -1 if it isn't to be changed. Returns true if successful, false if it failed.
Examples:
#include <kernwin.hpp>
// Jump to the binary entry point + 8 bytes, don't move
// the cursor along the X-axis
jumpto(inf.startIP + 8);