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The original is here, and
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# This file:
#   http://angg.twu.net/TCL/drag2022.tcl.html
#   http://angg.twu.net/TCL/drag2022.tcl
#           (find-angg "TCL/drag2022.tcl")
# Author: Eduardo Ochs <[email protected]>
# Based on: (find-anggfile "TCL/dragTs.tcl")
#           (find-anggfile "TCL/placer.tcl")
# Version: 2022mar02

package-require-Tk;   # See: (find-es "tcl" "package-require-Tk")
canvas .c -width 250 -height 250
pack   .c -expand yes -fill both

proc dragx {x} { global oldx; set prevx $oldx; set oldx $x; expr $x-$prevx }
proc dragy {y} { global oldy; set prevy $oldy; set oldy $y; expr $y-$prevy }

proc createletter {x y letter} {
  .c create text $x $y -text $letter -anchor nw -tags "T${letter}"
  .c bind T${letter} <B1-Motion> ".c move T${letter} \[dragx %x\] \[dragy %y\]"

}

lindex {"" {This is a test block:
* (eepitch-tclsh)
* (eepitch-kill)
* (eepitch-tclsh)
  source drag2022.tcl
  .c create text 100 100 -text A -anchor nw -tags "TA"
  .c bind TA <B1-Motion> {puts "%x %y"}
  .c bind TA <B1-Motion> {puts "%x %y"}
  .c bind TA <B1-Motion> ".c moveto TA %x %y"

  .c
  .c itemconfigure
  .c itemconfigure TA
  .c itemcget
  .c itemcget TA
  .c itemcget TA foo
  .c dtag
  .c cget
  .c itemcget
  .c itemcget TA
  .c gettags
  .c gettags TA
  .c imove

}} 0 ;# End of the test block





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