procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char); begin case Key of '0'..'9': ; //对数字键响应 #8: ; //对退格键响应'.': ; //小数点 else begin key:=#8;end; end; end;
Procedure TForm1.Edit1KeyPress(Sender:Tobject; var Key:Char); begin if not (Key in ['0'..'9','.',#8]) then Key:=#0; end;
procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char);
begin
case Key of
'0'..'9': ; //对数字键响应
#8: ; //对退格键响应'.': ; //小数点
else
begin
key:=#8;end;
end;
end;
begin
if not (Key in ['0'..'9','.',#8]) then
Key:=#0;
end;