RAD Studio VCL Reference
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TDBRichEdit.ReadOnly Property

Determines whether the user can use the rich database edit control to change the value of the field in the current record.

Pascal
property ReadOnly: Boolean;
C++
__property Boolean ReadOnly;

Set ReadOnly to true to prevent the user from changing the contents of the database field. When ReadOnly is true, the edit control is used only to display the contents of the field. If ReadOnly is false, the user can change the field's value as long as the dataset is in edit mode. 

 

Change 

Field 

Displaying and Editing Text in a Rich Edit Memo Control

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