Canvas issue

Question

I have a button on Canvas A that opens up canvas B.. But I noticed when canvas B opens canvas A becomes deactivated... is there anyway I can still have Canvas A active so I can copy and paste from canvas A into Canvas B ....
This is the code I am using for the button trigger...
Declare
LC$Clause Varchar2(5000);
x varchar2(20);
Begin
Select wrkuntcd into :global.a
from AV3M.SOURCE_PNWUC
where remoldpn = :TEMP1.INCOMING;
:TEMP1.WRKS := :global.a;
LC$Clause := ('where modelf = ''' ||:TEMP_RESIDUAL.modelf||''''||' and wrkuntcd = '''||:global.a||''''||' order by remoldpn asc ');
Set_Block_Property( 'SOURCE_PNWUC', DEFAULT_WHERE,LC$Clause);
set_window_property('WUC',X_POS,100);
set_window_property('WUC',Y_POS,50);
go_block('SOURCE_PNWUC');
:TEMP1.WRKS := :global.a;
execute_query;
End;

Answer 1

Thanks for the help.... I was able to solve my problem...Have another ? ... I changed everything per your recommendation ... Now on them main canvas I have the default menu options, is there a way to set it so I can disable the menu when I open another canvas...For example a stacked canvas... I want to be able to have those menu options only on the main canvas and not the other stacked canvases... is there a way to set this..
Thanks