Gene,
General Field Type
Not used very much at all as there really isn't anything you gain from embedding general fields if your database is large - apart from Memo field bloat. It is much better to embed links to the application you want to open as opposed to the "packaged data". One exception I use is when having to deal with rich text for transient or limited field numbers where it is quite useful. You can bind a General Field to a grid column if required and I do it to display images but on a large grid with large image sizes it does make navigation ponderously slow. I used to use the Kodak Image Thumbnail control when it was generally available back when as a free pre-installed control because it supported annotation and titles.
Screen Type
I am assuming you mean Screen Object as opposed to type. If so then I find this a great object to add "global properties" or user generated "global objects" which can pass data between forms or running programs. You can also use the Application object but I find this somewhat limiting unless you are requiring access to the application object's properties - for instance Application.ActiveProject.Homedir => Giving the base folder for the current project.
Attaching objects to the _Screen object is much more useful and elegant than declaring variables as public and much more powerful as you can simulate the equivalent of Global Constants and easily add new properties to say a "global Object" as required and also on the fly.
Dave Crozier
Software Development Manager
Flexipol Packaging Ltd.
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-----Original Message-----
From: ProFox <profox-***@leafe.com> On Behalf Of Gene Wirchenko
Sent: 28 September 2018 05:14
To: ProFox Email List <***@leafe.com>
Subject: Questions About Some VFP Data Types
Hello:
I finished all of my boss's requests for the moment, and now, I am back working on my grid replacement. Some day, maybe, I will have one.
I am curious about some VFP data types. What exactly are they?
For each of them, is the data type ever used as a table or cursor's column data type or as the type of an input control's data value? For some, I have another question.
G: General
I understand this type should be avoided. Is it of any use these days?
O: Object
No additional question.
S: Screen
What is this type?
B: Blob
No additional question.
Sincerely,
Gene Wirchenko
[excessive quoting removed by server]
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