RAD Studio VCL Reference
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TCustomEdit.NumbersOnly Property
TCustomEdit Class | TCustomEdit Members | StdCtrls Namespace | Description
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Allows only numbers to be typed into the text edit.

Pascal
property NumbersOnly: Boolean;
C++
__property Boolean NumbersOnly;
Description

Use NumbersOnly to prohibit entry of non-numeric characters in the textfield. Note, however, that a user can paste non-numeric characters in the textfield even when this property is set. 

 

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