procedure TForm1.DBEdit1KeyPress(Sender: TObject; var Key: Char); begin if not (key in ['0'..'9']) then begin key:=#0 end; end; form1.keypreview:=true;
在Edit1的OnKeyPress事件中输入以下代码: begin if Key >= #32 then if not (Key in ['0'..'9']) then Key := #0; end;
begin
if not (key in ['0'..'9']) then begin key:=#0 end;
end;
form1.keypreview:=true;
begin
if Key >= #32 then
if not (Key in ['0'..'9']) then
Key := #0;
end;