TCnMaskedTextBox.IsOverwriteMode Property

Gets a value that specifies whether new user input overwrites existing input.

Namespace: CNClrLib.Control.MaskedTextBox
Delphi
public
 property IsOverwriteMode: Boolean read GetIsOverwriteMode;

Property Value

Type: Boolean

true if TCnMaskedTextBox will overwrite existing characters as the user enters new ones; false if TCnMaskedTextBox will shift existing characters forward. The default is false.

IsOverwriteMode takes into account both the value of the InsertKeyMode property and the state of the user's keyboard. If InsertKeyMode is set to either Insert or Overwrite, IsOverwriteMode will return false or true, respectively. If InsertKeyMode is set to Default, it will return the state of the INSERT key.

When IsOverwriteMode is false, TCnMaskedTextBox will reject as invalid any character entry that would result in a violation anywhere in the mask. In explanation, if inserting a character would cause a character to be shifted over into a mask position where it would not be valid, the character insertion will be rejected.