Re: [UOPL-Architect] how design uopl gui applications

[Richard B W. <rb...@us...>]

Although both the VCL and CLX versions of TForm descend from an object
named TCustomForm, they actually diverge from one another at the level of
TComponent. (The VCL and CLX versions of TControl are declared in different
units.)

VCL
TForm -> TCustomForm -> TScrollingWinControl -> TWinControl -> TControl ->
TComponent -> TPersistent -> TObject

CLX
TForm -> TCustomForm -> TScrollingWidgetControl -> TFrameControl ->
TWidgetControl -> TControl -> TComponent -> TPersistent -> TObject

I don't have access to the source code of Delphi so I don't know for sure
whether the form designers for VCL and CLX are different but the VCL and
CLX versions of TForm are very different beasts.

Richard B. Winston
rb...@us...
http://water.usgs.gov/nrp/gwsoftware/
703-648-5988
on Fridays: 301 474-2762


|---------+------------------------------------------>
|         |           Thomas Miller                  |
|         |           <tm...@bs...>     |
|         |           Sent by:                       |
|         |           uop...@li...|
|         |           ceforge.net                    |
|         |                                          |
|         |                                          |
|         |           12/03/2004 01:03 PM            |
|         |           Please respond to              |
|         |           uopl-architect                 |
|         |                                          |
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  |       To:       uop...@li...                                                   |
  |       cc:                                                                                              |
  |       Subject:  Re: [UOPL-Architect] how design uopl gui applications                                  |
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Richard B Winston wrote:

<snip>

>You might object that CLX works and its TForm is not the same as the VCL
>TForm.  I suspect that the only reason the form designer for CLX works is
>because Borland created a new form designer to work with the CLX TForm.  I
>suspect that the two form designers (if that is really what is going on)
>share a lot of code and act the same way but they are not identical.  It
>might be worth looking at the CLX community project to see what is in
there
>that might be relevant to this question.
>
>
I am almost positive they are the same.  As long as the form descends
from TCustomForm, I would
expect that it will work.