I'm writing my GUI using the Tcl::Tk perl module. I've created a BLT
graph widget. I'd like to be able to display the graph element
information if the user mouses over it. I can do this with pure
Tcl/Tk/BLT, but I'm unable to find the right combination of commands
within this Tcl/Tk/BLT perl hybrid.
In Tcl/Tk, I can figure out which element the user is interested in by
passing a procedure %x and %y. How is this doable in perl?
When I tried to use Eval, I got strange answers:
my $graph = $frame->BLTGraph->pack();
$graph->bind('<Motion>'=>[\&displayInfo,$graph]);
sub displayInfo {
my $graph = $_[0];
$int->Eval("$graph element closest %x %y info -interpolate false");
}
Running with this eval command gave the error:
bad screen distance "c63c760": bad window x-coordinate
Anyway, in summary, the X,Y coordinates of the mouse will need to be
known to determine the information.
Any help would be appreciated.
ps. I don't give version information, because I figure there's a syntax
issue that I'm missing. If the version info is relevant, I can provide it.
Michele
