建议这样写,便于以后修改代码 function IsAllEmpty(EA: array of TEdit): Boolean; var I: Integer; begin Result := True; for I := Low(EA) to High(EA) do Result := Result and (Length(EA[I]) = 0); end; //sample if IsAllEmpty([TEdit1, TEdit2, TEdit3]) then // do something
不用這樣寫,可以這樣寫 for i:=1 to 6 do begin if TEdit(Findcomponent('Edit'+inttostr(i))).text<>'' then //add youself code end; 是错误的;这样就对了;看一看 下边的如何?! procedure TForm1.Button1Click(Sender: TObject); var i:integer; emp:boolean; begin for i := 0 to form1.ComponentCount-1 do begin if form1.Components[i] is Tedit then if Tedit(form1.Components[i]).text='' then emp:=true else begin emp:=false; exit; end; end; end;
function IsAllEmpty(EA: array of TEdit): Boolean;
var I: Integer;
begin
Result := True;
for I := Low(EA) to High(EA) do
Result := Result and (Length(EA[I]) = 0);
end;
//sample
if IsAllEmpty([TEdit1, TEdit2, TEdit3]) then
// do something
for i:=1 to 6 do
begin
if TEdit(Findcomponent('Edit'+inttostr(i))).text<>'' then
//add youself code end;
是错误的;这样就对了;看一看 下边的如何?!
procedure TForm1.Button1Click(Sender: TObject);
var
i:integer;
emp:boolean;
begin
for i := 0 to form1.ComponentCount-1 do
begin
if form1.Components[i] is Tedit then
if Tedit(form1.Components[i]).text='' then
emp:=true else
begin
emp:=false;
exit;
end;
end;
end;