How do the initialization is done in propertysheet? - mfc

Question

I am having propertysheet where I had overriden OnInitDialog in CPropertySheet derived class
as follows,
BOOL CMySheet::OnInitDialog()
{
CPropertySheet::OnInitDialog();
//Once the call reached this point and after this my first page OnInitDialog is being called.
//Only first page onInitDialog is being called and it is not calling the remaining pages //OnInitDialog.why?
//I am not sure how this calling or mapping is being done.
}
//CMySheet is derived from CPropertySheet
can anyone please explain me how all this mapping is being done.

Answer 1

how to correctly add the pages:
you can immagine a CPropertySheet as a dialog container, so its main job is to contain other dialogs CPropertyPage.
So firstly i would say that you have to create your CPropertyPages: so create the resources, classes etc...
Then you add the pages using CPropertySheet::AddPage method, but you don't have to do it in the CPropertySheet::OnInitDialog you can do it in the constructor or even outside the class but the important thing is that you do it before you call the CPropertySheet::DoModal because that is the moment where the CPropertySheet::OnInitDialog will be called.
something like this:
CMySheet *pSheet = new CMySheet();
CMyPage *pPage = new CMyPage();
pSheet->AddPage(pPage);
INT_PTR iReturn = pSheet.DoModal();
How stuff works:
after you use the CPropertySheet::DoModal method the CPropertySheet::OnInitDialog will be called, the CPropertySheet will then load the first page, because as i said it is a dialog container, and therefore it will show one dialog at a time, that's why you see only the first page loading, because the CPropertySheet is made to show only one CPropertyPage at a time! So each page will load separatedly, lets say when you click on a tree that stores the pages or when you click on the next button if you created a wizard, and not all at the same time