Menu with canvases!!!

Question

hi all,
i have got a problem with canvases.I use one window all canvases.I try to make a menu with canvases.I have more
than one canvases.One is vertical canvas for menus on the left,Stack canvases for
their submenus and a content canvas for other operations.I use buttons for menus.
My submenus' buttons are on a stack canvas.When I pressed a button on vertical
canvas,I only want a stack to appear at that time.The others must not appear.
I created my stack canvases on my content canvas at design time.There isnt any
problem at design time.I use hide/show_view built-ins on my module PLSQL.In WHEN-NEW-FORM-INSTANCE
trigger,I want to hide all canvases at start time.But,when I did this,one stack canvas
has appeared the whole time on my content canvas as it is the last one that I created.
I searched on OTN and net but there is no satisfactory answer with my problem.
Can I play with canvases like this or not? Pls let me know any idea.
Regards.

Answer 1

hi Andy,
thanks for reply..I partly solved my problem.First of all,I used separate block for my each menu's buttons.Then,the last stack canvas remained on my form.I collected buttons of my all menus in one block.Now, it works.The PJC logic is also a way to do it.But, system configuration cannot be enough power.So,I am trying to stabilize system by doing that.
But another small problem occured.I used open_form built-in for each form.Also,I reached menus while the form was still open.But,I want one form is open.When I pressed the same menu button,the second form isnot open if the form is still open.
Do you have any idea for this.
Thanks.
Kerem