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procedure TForm1.Button4Click(Sender: TObject);var myString:PChar;Begin //SetLength (S1, 100); //GetWindowText (Handle, PChar (S1), Length (S1)); //Button1.Caption := S1;
GetMem(myString,1024);//开辟1024个字节
GetWindowText (Handle, myString, 100); Button4.Caption :=format('%s:%d',[myString,strlen(myString)]); FreeMem(myString,1024);//释放end;
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