Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

I have a PerlTk app containing a.o a frame that has 2 Scrolled text boxes in it. To minimize the app, there is a button that can show/hide these boxes. Hitting the button calls a PackForget() on the frame and its children, or a pack() on the same, depending on the state of the frame.

Now this works fine as long as the GUI is not being resized manually. After a resize, the text boxes are forgotten and restored, but the main window does not resize to go with it.

I have trimmed down the code as much as possible (see below), and tried many code changes but can't get around the problem. As such there is some 'debug' code still around.

any help is appreciated, David

my code:
use strict; use Tk; use Tk::Menu; use Tk::Text; use Tk::Dialog; use Tk::Scrollbar; use Tk::DialogBox; ##################### my $stdout_shown = 1; ############ script starts here ################## my $mw = MainWindow->new(); $mw->title($0); my $buttons_frame = $mw->Frame(-relief => 'groove')->pack(-side => ' +top', -fill => 'both'); my $top_frame = $buttons_frame->Frame(-relief => 'groove')->pack +(-side => 'top', -fill => 'x'); my $middle_frame = $buttons_frame->Frame(-relief => 'groove')->pack +(-side => 'top', -fill => 'x'); &load_task_list(); # loads the tasks from the task file and creates a +button for each. &create_ctrl_buttons(); # see how much space is needed without the log_frame $mw->idletasks; my $w = $mw->reqwidth; my $h = $mw->reqheight; print "MINSIZE: $w $h\n"; $mw->minsize($w,$h); $mw->update(); my $log_frame = $mw->Frame(); #$log_frame->packPropagate(1); my $scr_stdout = $log_frame->Scrolled("Text", -scrollbars => 'oso +e',-relief => 'groove', -height => 10)->pack(-fill => 'both', -expand + => 1); my $scr_stderr = $log_frame->Scrolled("Text", -scrollbars => 'oso +e',-relief => 'groove', -height => 5)->pack(-fill => 'both', -expand +=> 1); # -width => 150, $log_frame->pack(-side => 'bottom', -fill => 'both', -expand => 1); $log_frame->packPropagate(1); print STDERR "this is STDERR before tie\n"; print STDOUT "this is STDOUT before tie\n"; MainLoop; exit 0; ################# my @logframe_kids = (); my $stdout_geo; my $stdout_w; my $stdout_h; sub mw_show_hide($) { my $lbtn = $Tk::widget; #$mw->idletasks; my $lframe_w = $log_frame->width; my $lframe_h = $log_frame->height; $stdout_w = $scr_stdout->width; $stdout_h = $scr_stdout->height; $stdout_geo = $scr_stdout->geometry(); # nee +d to adjust for task-bar xx pts my $lframe_rw = $log_frame->reqwidth; my $lframe_rh = $log_frame->reqheight; my $stdout_rw = $scr_stdout->reqwidth; my $stdout_rh = $scr_stdout->reqheight; my $stderr_rw = $scr_stderr->reqwidth; my $stderr_rh = $scr_stderr->reqheight; # warning_window("sizes: frame: c($lframe_w x $lframe_h) r:($lframe_rw + x $lframe_rh) \n stdout: g:($stdout_geo) c($stdout_w x $stdout_h) r( +$stdout_rw x $stdout_rh) \n stderr: $stderr_rw x $stderr_rh"); # print "log-frame " . ($log_frame->ismapped ? 'is' : 'is not') . " ma +pped!\n"; if ($stdout_shown) # it was visible { $stdout_shown = 0 ; # invert the boolean state; hide the window + and add the 'show' button + message $lbtn->configure(-text => 'Show'); @logframe_kids = $log_frame->packSlaves; print "frame slaves:",@logframe_kids,"\n"; foreach (@logframe_kids) { $_->packForget; } $log_frame->packForget; } else { $stdout_shown = 1 ; # invert the boolean state; show the window +and add the 'hide' button + message $lbtn->configure(-text => 'Hide'); print "frame slaves:",@logframe_kids,"\n"; if (scalar(@logframe_kids) == 0) {warning_window("nothing to re-pa +ck here !");} $scr_stdout->configure(-width => $stdout_w , -height => $stdout_h) +; foreach (@logframe_kids) { $_->pack; } $log_frame->pack; } $mw->update; } sub create_ctrl_buttons { my $show_hide_txt = $stdout_shown ? 'Hide' : 'Show'; my $stop_btn = $top_frame->Button(-text => 'Stop', -comma +nd => [\&warning_window, "STOP" ] )->pack(qw/-side left -anchor w/); my $paus_btn = $top_frame->Button(-text => 'Pause', -comma +nd => [\&warning_window, "PAUSE"] )->pack(qw/-side left -anchor w/); my $show_hide_btn = $top_frame->Button(-text => 'Show/hide', -comma +nd => \&mw_show_hide ) ->pack(qw/-side right -anchor e/); } sub load_task_list { my @tsks = qw/t1 t2 t3 t4/; foreach my $t (@tsks) { my $btn = $middle_frame->Button(-width => 4, -text => $t, -comman +d => [\&warning_window ,"$t"] )->pack(qw/-side left -anchor w -fill x + -expand 1/); } } sub warning_window { # print a message and wait for OK to be clicked. my(@args) = @_; my $warn_txt = "WARNING: @args"; my $ww = $mw->Dialog(-title => 'Warning', -text => $warn_txt, -buttons => ['Ok'], -default_button => 'Ok'); my $answer = $ww->Show(); return ($answer); }

In reply to resizing problem with Tk appl using PackForget by monger_39

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (10)
As of 2022-11-29 12:04 GMT
Find Nodes?
    Voting Booth?