Creating And Destoying composite Widgets

[morraine]

hello, i'm trying to build an application which can dynamically load and destroy pages with in the app. but I'm having problems rendering loaded pages properly.

i have attached some screen shots to show what i mean.

i first open the application which has the page loaded in the middle with some tab widgets and lineeditors and a tableView. then i press the delete page button which destroys the widget containing all the aforementioned parts and then i press add page which is meant to create the page again in memory, but i now does not render the page properly. I've done this in pyqt and this it the code for the add page function and delete page function.

def SearchAndAddCustomer(self):
        //this is the new object from the class which creates the search customer widget and all its contents
        self.SearchAndAdd = customerSearch(self) 
        // this is the widget which holds the search customer widget on the main app back (the dark grey area) which is a Stacked widget called doubleContent
        self.mainApplicationStack = centralHolder2(self)
        // layout onto the dark grey area
        self.mainApplicationStackLayout = QGridLayout (self.mainApplicationStack.centralCanvas)
 
        self.mainApplicationStackLayout.addWidget(self.SearchAndAdd)
        self.mainApplicationStackLayout.setContentsMargins(0,0,0,0)
        self.mainApplicationStackLayout.setSpacing(0)
        //add the pages to the stack widget
        self.doubleContent.insertWidget(0,self.mainApplicationStack)
 
 
    def SearchAndAddCustomerDelete(self):
        self.SearchAndAdd.destroy() 
        self.doubleContent.removeWidget(self.mainApplicationStack)
        self.mainApplicationStack.destroy()

def SearchAndAddCustomer(self):
        //this is the new object from the class which creates the search customer widget and all its contents
        self.SearchAndAdd = customerSearch(self) 
        // this is the widget which holds the search customer widget on the main app back (the dark grey area) which is a Stacked widget called doubleContent
        self.mainApplicationStack = centralHolder2(self)
        // layout onto the dark grey area
        self.mainApplicationStackLayout = QGridLayout (self.mainApplicationStack.centralCanvas)

        self.mainApplicationStackLayout.addWidget(self.SearchAndAdd)
        self.mainApplicationStackLayout.setContentsMargins(0,0,0,0)
        self.mainApplicationStackLayout.setSpacing(0)
        //add the pages to the stack widget
        self.doubleContent.insertWidget(0,self.mainApplicationStack)

        
    def SearchAndAddCustomerDelete(self):
        self.SearchAndAdd.destroy() 
        self.doubleContent.removeWidget(self.mainApplicationStack)
        self.mainApplicationStack.destroy()

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how can i render a page properly which is not in memory at the start of the application?
I'm i missing some thing?
you input on this will be very grateful