function Edit: Boolean;
HIDESBASE bool __fastcall Edit(void);
Attempts to drive the DataSource into an editing state if it is not already in one.
Use Edit to try to ensure that the contents of the field can be modified. A return value of true indicates that the field was already in an editing state, or that the DataSource was successfully changed to allow editing. A return value of false indicates that the DataSource could not be changed to allow editing. For example, if the CanModify property is false, Edit fails, and returns false.