I don't use Win32::Gui, but in general, you don't destroy widgets to get rid of their data. Looking at the Win32::Gui tutorial, you may want Remove() instead of DestroyWindow. Maybe: 
 
sub gitni_wchR_Deactivate {
print "Here\n";
####Win32::GUI::DestroyWindow($wchRW->wchR_lb0); #this is line n
Win32::GUI::Remove($wchRW->wchR_lb0); 
}

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In reply to Re: remove elements win32 gui by zentara
in thread remove elements win32 gui by teoma

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