RAD Studio VCL Reference
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ValEdit.TKeyOption Enumeration
ValEdit | Description
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TKeyOption and TKeyOptions indicate the response of a value list editor to certain keystrokes.

Pascal
TKeyOption = (
  keyEdit,
  keyAdd,
  keyDelete,
  keyUnique
);
C++
enum TKeyOption {
  keyEdit,
  keyAdd,
  keyDelete,
  keyUnique
};
File
Description

TKeyOption is a set of TKeyOptions values. The possible values of TKeyOptions are

Option 
Meaning 
keyEdit  
The user can select and edit values in the first (key) column. That is, the user can specify the name in a name/value pair.  
keyAdd  
The user can add new name/value pairs. When included, the user can create new entries by pressing the Insert key or using the down arrow key when positioned on the last name/value pair. keyAdd requires that keyEdit is also included.  
keyDelete  
The user can delete the selected name/value pair by pressing the Delete key.  
keyUnique  
The user can't create name/value pairs where the name portion is the same as the name in another name/value pair. Attempting to add a duplicate name causes the value list editor to raise an exception. keyUnique requires that keyEdit is also included.  

 

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