My mental visualisation of what you're trying to achieve was clearly wrong. My apologies.

You'll need to keep track of each cell the button is dragged through. When it enters a new cell, you'll need to blank out the last cell: probably easiest to use a Label without text, e.g. $table->put($r, $c, '').

You also mentioned you wanted to move any existing button to a new cell ("... push the button under it to the right or to the next row ..."). I think you'll need to capture the return value of $table->put() to achieve this; although there's probably other ways of doing it.

I hope that's a bit closer to what you're after.

-- Ken

In reply to Re^3: How to make a Tk::Button move/slide within a Tk::Table by kcott
in thread How to make a Tk::Button move/slide within a Tk::Table by bcarroll

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