The value of ESP was not properly saved across a function call是什么原因

已知有一dll中有一函数返回值为整型数,参数为6个串,参数可在dll的函数中被改变,我使用如下语句调用该函数:
typedef int (*TEST)(CString&,CString&,CString&,CString&,CString&,CString&);
TEST test;
test=(TEST)GetProcAddress(hinst,"test");
test(a,b,c,d,e,f);
运行时得到如下错误信息:
The value of ESP was not properly saved across a function call. This is usually a result of calling a function declared with one calling convention with a function pointer declared with a different calling convention.
但是其他的程序(别人的程序)可以正常调用这个函数,请问这是为什么?