function StrComp(const Str1, Str2 : PChar): Integer; Return value Condition<0 Str1< Str2 =0 Str1= Str2 >0 Str1 > Str2例子: procedure TForm1.Button1Click(Sender: TObject); begin if StrComp(PChar(Edit1.Text),Pchar(Edit2.Text))<0 then ShowMessage('Edit1<Edit2') else if StrComp(PChar(Edit1.Text),Pchar(Edit2.Text))=0 then ShowMessage('Edit1=Edit2') else ShowMessage('Edit1>Edit2'); end;
Return value Condition<0 Str1< Str2
=0 Str1= Str2
>0 Str1 > Str2例子:
procedure TForm1.Button1Click(Sender: TObject);
begin
if StrComp(PChar(Edit1.Text),Pchar(Edit2.Text))<0 then
ShowMessage('Edit1<Edit2')
else if StrComp(PChar(Edit1.Text),Pchar(Edit2.Text))=0 then
ShowMessage('Edit1=Edit2')
else ShowMessage('Edit1>Edit2');
end;