Hey everyone, I'm fairly new to perl and experimenting with the Win32::GUI module. This is probably very easy but I can't get it to work. I'm trying to make an 'about' messagebox (providing info about the program version) appear when clicking on a menu item of a window. This is my code so far: First making the menu

use strict; 
use Win32::GUI();
                
        my $Menu_id=1;
       
        my $Menu = new Win32::GUI::Menu();
        
        
        my $MenuButton1 = $Menu->AddMenuButton(
                -text => "Menu",
                -id => $Menu_id++,
        );
        
        my $MenuButton1_Quit = $MenuButton1->AddMenuItem(
                -text => "Quit",
                -id => $Menu_id++,
                -onClick => sub{print"program closed\n"; return -1;},
        );
        
        my $MenuButton1_About = $MenuButton1->AddMenuItem(
                -text => "About",
                -id => $Menu_id++,
                -onClick => $MessageBox_About->DoModal(),
        );
[download]

Then making the first window and include the menu

        my $Main = new Win32::GUI::Window(
                -name  => "MainWindow",
                -title => "Main Window",
                -pos   => [ 100, 100 ],
                -size  => [ 300, 200 ],
                -menu => $Menu,
        );
        
        $Main->AddLabel(
                -name => "Label1",
                -text => "Welcome",
                -pos => [12,10],
        );
[download]

Then the messagebox showing the about info. Since there is no actual MessageBox() I just made a window with a label and a close button

my $MessageBox_About = new Win32::GUI::Window(
                -name => "AboutWindow",
                -title => "About this program",
                -pos =>[ 150, 150 ],
                -size => [150,150],
                -parent => $Main,
        );
        
        $MessageBox_About->AddLabel(
                -name => "MsgBox_Label",
                -text => "Blabla",
                -pos => [20,20],
        );
        
        $MessageBox_About->AddButton(
                -name => "MsgBox_Button",
                -text => "Ok",
                -pos => [50,40],
        );

        sub MsgBox_Button_Click {return -1;}
        #closes the messagebox
[download]

The problem here of course is that $MessageBox doesn't exist yet when it's called at the MenuButton1 onClick event. The messagebox has the main window as parent and DoModal is used to prevent interaction in the main window while the about window is still visible. I tried an event handler sub

sub MenuButton1_About_Click{$MessageBox_About->DoModal(); return 0;}
[download]

But also doesn't work.. How to get this to work?

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