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2003-11-22 09:07:57 AM
cppbuilder41
Here's the example in the Help docs for TPageControl:
#include <Comctrls.hpp>
TPageControl* ppc;
TTabSheet* pts[MAXTABS];
const char * ppcTabTitles[] = { "ShortString", "Orders", "Items", "Parts" };
int iTabTitles = sizeof(ppcTabTitles)/sizeof(ppcTabTitles[0]);
void __fastcall TForm1::FormCreate(TObject *Sender)
{
ppc = new TPageControl(this);
ppc->Parent = this;
ppc->Align = alClient;
for (int i=0;i<iTabTitles;i++)
{
pts[i] = new TTabSheet(this);
pts[i]->PageControl = ppc;
pts[i]->Name = AnsiString("pts") + ppcTabTitles[i];
pts[i]->Caption = ppcTabTitles[i];
}
}
void __fastcall TForm1::FormDestroy(TObject *Sender)
{
for (int i=0;i<iTabTitles;i++)
delete pts[i];
delete ppc;
}
To begin with, of course, it is using FormCreate and FormDestroy - no-no
in C++Builder. But I also wonder about the deletes. I thought that the
owner was responsible for deleting, so the "new TPageControl(this)" sets
the owner to be the form, and it will be responsible for deleting it.
Isn't that right?
--
Jonathan Arnold C/C++/CBuilder Keen Advice:
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"Jonathan Arnold" < XXXX@XXXXX.COM >wrote in message
just translations of the equivilent Delphi code. I don't think the
documentation writers take C++ issues into account when they write the
documentation, so many examples are wrong because of that.
remove itself from its Owner's internal lists so that the Owner does not try
to free it again later on.
Gambit