送分100分：为何一个从DLL中返回的字符串在MEMO中不能正常显示

Question

从一个DLL中返回一个字符串变量outstr，内容为：'8888  55555             55555             03 222               0                                                                    50      20               3200                                  0              0      0                                 0                                                                         40      11         '用SHOWMESSAGE(outstr)  可正常显示其内容，但MEMO1.TEXT:=outstr;却不能正常执行，出现提示如图所示：（图片后附。）

Answer 1

var 
s: string;
...
s := outstr;
MEMO1.TEXT:= s;