Firemonkey the perfect way to limit tedit to enter only numbers

Online methods will affect the copy and paste shortcuts, such as the use of this can be a perfect solution

Need to reference System.character unit

Procedure Tmainform.editimeikeydown (Sender:tobject; var Key:word; var Keychar:char; Shift:tshiftstate); Begin Only numeric or control characters can be entered If not keychar.isnumber and is Keychar.iscontrol then Begin KeyChar: = Char (0); Key: = 0; End End

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This allows Tedit to enter only the number, and does not affect the CTRL C CTRL v copy-paste cut does not affect the home key end key and so on

Restrictions can only be entered in letters, Isletter

Firemonkey the perfect way to limit tedit to enter only numbers