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package require tkdnd
catch {console show}
pack [ttk::button .drop_target -text " Drop Target (I can accept anything!) "] \
-fill x -padx 20 -pady 20
tkdnd::drop_target register .drop_target *
## Visual feedback:
bind .drop_target <<DropEnter>> {%W state active}
bind .drop_target <<DropLeave>> {%W state !active}
## Position events:
proc handle_position {widget mouse_x mouse_y drag_source_actions buttons} {
## Limit drops to the left half part of the window...
set x [winfo rootx $widget]
set w [winfo width $widget]
set middle [expr {$x + $w / 2.}]
if {$mouse_x > $middle} {return refuse_drop}
if {"alt" in $buttons && "link" in $drag_source_actions} {
return link
} elseif {"ctrl" in $buttons && "move" in $drag_source_actions} {
return move
} elseif {"copy" in $drag_source_actions} {
return copy
} else {
return refuse_drop
}
};# handle_position
bind .drop_target <<DropPosition>> [list handle_position %W %X %Y %a %b]
## Drop callbacks:
bind .drop_target <<Drop>> {
puts "Generic data drop: \"%D\""
%W state !active
return %A
}
bind .drop_target <<Drop:DND_Text>> {
puts "Dropped text: \"%D\""
%W state !active
return %A
}
bind .drop_target <<Drop:DND_Files>> {
puts "Dropped files: \"[join %D {, }]\""
%W state !active
return %A
}
bind .drop_target <<Drop:DND_HTML>> {
puts "Dropped HTML: \"[join %D {, }]\""
%W state !active
return %A
}
bind .drop_target <<Drop:DND_Color>> {
puts "Dropped color: \"%D\""
%W state !active
return %A
}
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