为什么老是出错,
unit UntConst;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls,Forms,Dialogs;
procedure MoveNext(var Key: Char);
implementation
procedure MoveNext(var Key: Char);
begin
if key=#13 then
begin
key:=#0;
perform(WM_NEXTDLGCTL,0,0);//出错
end;
end;
end.
编译的时候,老是在perform(WM_NEXTDLGCTL,0,0);行出错:undeclared identifier "perform".
为什么????在线等待,谢谢