Re: Simple Subfile question

On Mon, 9 Apr 2001, Jim Langston wrote:
>
> Well, why should I need that much experience to do subfiles to be able to
> do one?  I understand that's the way they are, but why?  I don't have 
> this type of trouble with subfile type programs in windows.  In any language,
> C++, VB, Delphi.
> 
> I consider it a design flaw.

Jim...

Lets say I'd like to create a "subfile"-like list in VB.  I want a 
screen layout like this:

Product Code  Description of Product  Quantity  Price  Error Messages
------------  ----------------------  --------  -----  ----------------

Now, product code, quantity and price all have to be changable by the
user.   Description and Error Messages can't be changed by the user.
There needs to be a way to scroll through a list of up to 500 items,
including blank lines for new items to be added.

How the heck would you do this in VB?   A listbox won't work, since you
can't change the data in a listbox.  a grid control might work, but I'm
not sure that I'd be able to make some fields changable and some not.

I could look for the focus to hit a certain cell on a grid, the overlay
that spot with a textbox, but that'd be a WHOLE LOT more programming 
than a subfile, and would require a lot of experience writing things.

So how would I do this in VB?  And would it really be easier than a
subfile?   (I'm still using VB 4.0, but I could upgrade... but when I
do, which control would I use?  Even in 4.0, theres a lot of choices,
and I'm not really sure which one is right!)

How would you do it in C++??  Last I checked, screen I/O (much less 
scrolling lists) weren't even part of the C++ standard.   Or are you
talking about Visual C++, specifically?   

If you have a suggestion, I'd almost certainly use it!   But, at 
least in my little world, it's easier to use subfiles.

> 
> Regards,
> 
> Jim Langston
> 

Thanks for your input.


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