🚀 go-pugleaf

"Patrick Wong" <patrickwong@computer.org> wrote in message
news:41e3ab0a@newsgroups.borland.com...

> My perception is that VCL are something present on the IDE componet
> palette, which can be drag-n-drop on a form and provide P(roperties)
> M(ethods)E(vents) interface for users.

Your perseption of the VCL is very limited.  The VCL is a lot more then just
the components you see on the palette.  It is an entire framework of its
own.  The components are just a piece of a much larger library.

> And they are OO to begin with, that is, the user has to instantiate an
> object to work with them.

There are many units in the VCL that don't have objects at all.  SysUtils,
for example, is mainly just standalone utility functions.  Same with Math.

> BCB(Delphi) File I/O do not have object to operate.

It does if you use TFileStream ;-)

> To ask more specifically, FileOpen() can open an existing file with
> desired access mode.  However, when one has to open a *NEW*
> file, the FileCreate() does not have such access mode to select.

Correct.

> Do I have to create it by FileCreate(), then FileClose(), and then
> FileOpen() again to allow the file to work in the desired fashion?

Yes.  Otherwise, don't use the VCL file I/O functions to begin with.  Use
the Win32 API directly, specifically CreateFile() (which both FileOpen() and
FileCreate() use internally).


Gambit