PapaGeek
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Mar 22, 2014, 10:48 AM
Post #1 of 11
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Tk - Changing the dimensions for a table.
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I found some code on line that allows me to create a Tk table in a frame and make it scrollable. The code I am writing can create a number of user definable different tables of various sizes. I basically want the user to be about to select what table they wish to see and have that table appear in the frame/table with the column headers and the first two columns fixed and the rest scrollable.
One option might be to create the table way larger than I need and just blank out the extra rows and columns as I update the table content for each request, but it would be nice if the scroll bars showed the bottom of the table when pulled to the bottom, etc.
How do I write the second and third lines of the pseudo code at the bottom of this example?
When I run the program with the two lines before the pseudo code un-commented, I get the following error:
Tk::Error: Can't modify non-lvalue subroutine call at …tKTable.pl line 53.
#!/usr/bin/perl -w
use Tk;
use Tk::Table;
use strict;
my $mw = MainWindow->new;
$mw->geometry("475x225");
#$mw->resizable(0,0);
$mw->title("Table Example");
$mw->Label( -text=>"Select what report to display" )->pack();
$mw->Button( -text=>"show table 1", -command =>[\&displayTable, 1 ])->pack();
$mw->Button( -text=>"show table 2", -command =>[\&displayTable, 2 ])->pack();
my $table_frame = $mw->Frame()->pack();
my $table = $table_frame->Table(-columns => 18,
-rows => 19,
-fixedrows => 1,
-fixedcolumns => 1,
-scrollbars => 'se',
-relief => 'raised');
foreach my $col (1 .. 18)
{
my $tmp_label = $table->Label(-text => "COL " . $col, -width => 8, -relief =>'raised');
$table->put(0, $col, $tmp_label);
}
foreach my $row (1 .. 18)
{
foreach my $col (1 .. 18)
{
my $tmp_label = $table->Label(-text => $row . "," . $col,
-padx => 2,
-anchor => 'w',
-background => 'white',
-relief => "groove");
$table->put($row, $col, $tmp_label);
}
}
$table->pack();
my $button_frame = $mw->Frame( -borderwidth => 4 )->pack();
$button_frame->Button(-text => "Exit", -command => sub {exit})->pack();
MainLoop;
sub displayTable
{
my ($tableID) = @_;
print "displaying table $tableID\n";
#my $rows = 25;
#$table->rows = $rows;
=speudoCode
my (@tableData,$rows,$columns) = getTableData($tableID);
$table->columns = $columns;
$table->rows = $rows + 1; # create extra row for headers
foreach row
for each column
my $tmp_label = $table->Label(-text => "get data from my table ($row, $col)",
-padx => 2,
-anchor => 'w',
-background => 'white',
-relief => "groove");
$table->put($row, $col, $tmp_label);
=cut
} |
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