Initialization
DefaultFieldClasses [ftString] := TMyStringField;
Again there is a button asking for field class information, but the effect of this code is clearly visible in the DBGrid:
|
Open |
Get Field Definition Get Field Class | ||||
|
CustNo |
Company |
Addrl | |||
|
1221 |
Kauai Dive Shoppe is not Unicode |
4-976 Sugarloaf Hwy is not Unicode | |||
|
1231 |
Unisco is not Unicode |
PO Box Z-547 is not Unicode |
- | ||
|
1351 |
Sight Diver is not Unicode |
1 Neptune Lane is not Unicode |
— | ||
|
1354 |
Cayman Divers World Unlimited is not Unico |
PO Box 541 is not Unicode | |||
|
1356 |
Tom Sawyer Diving Centre is not Unicode |
632-1 Third Frydenhoj is not Unicode | |||
|
1380 |
Blue Jack Aqua Center is not Unicode |
23-738 Paddington Lane is not Unicode |
£ | ||
|
1384 |
VIP Divers Club is not Unicode |
32 Main St. is not Unicode | |||
|
1510 |
Ocean Paradise is not Unicode |
PO Box 8745 is not Unicode | |||
|
1513 |
Fantastique Aquatica is not Unicode |
Z32 999 #12A-77 A.A, is not Unicode | |||
|
1551 |
Marmot Divers Club is not Unicode |
872 Queen St. is not Unicode | |||
|
1560 |
The Depth Charge is not Unicode |
15243 Underwater Fwy. is not Unicode | |||
|
1563 |
Blue Sports is not Unicode |
203 12th Ave. Box 746 is not Unicode | |||
|
1624 |
Makai SCUBA Club is not Unicode |
PO Box 8534 is not Unicode | |||
|
Q | |||||
|
OentDataSetLFfekfell] TOStnng: TMyStringField | |||||
In more complex situations you can override the dataset class and redefine the GetFieldClass virtual method142. Again, by inheriting from a custom dataset class you can customize the support classes specifically, while the approach I've used triggers the change for each dataset of the current application, which is something you might want or not.
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Project Management Made Easy
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