1 #include<Windows.h>
 2 #include<stdio.h>
 3
 4 int main()
 5 {
 6   DWORD dwCode;
 7   //开始没有设置任何值，所以返回值为0
 8   dwCode = SetErrorMode(SEM_FAILCRITICALERRORS);
 9   printf("the first dwCode:0x%x\n", dwCode);
10
11   //这里设置值SEM_NOGPFAULTERRORBOX是2，返回值为前面设置的值所以为1
12   dwCode = SetErrorMode(SEM_NOGPFAULTERRORBOX);
13   printf("the second dwCode:0x%x\n", dwCode);
14
15   return 0;
16 }

 1 #include<Windows.h>
 2 #include<stdio.h>
 3
 4 int main()
 5 {
 6   DWORD dwCode;
 7   //开始没有设置任何值，所以返回值为0
 8   dwCode = SetErrorMode(SEM_NOALIGNMENTFAULTEXCEPT);
 9   printf("the first dwCode:0x%x\n", dwCode);
10
11   //这里设置为SEM_NOGPFAULTERRORBOX，返回值为上次设置的值为0x4
12   dwCode = SetErrorMode(SEM_NOGPFAULTERRORBOX);
13   printf("the second dwCode:0x%x\n", dwCode);
14
15   //这里设置为SEM_FAILCRITICALERRORS，返回值却不为0x2，这是由于前面设置的SEM_NOALIGNMENTFAULTEXCEPT不会清除，所以叠加0x4+0x2
16   dwCode = SetErrorMode(SEM_FAILCRITICALERRORS);
17   printf("the second dwCode:0x%x\n", dwCode);
18
19   return 0;
20 }

 1 #include<Windows.h>
 2 #include<stdio.h>
 3
 4 int main()
 5 {
 6   //模拟沙箱环境设置
 7   SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOALIGNMENTFAULTEXCEPT | SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX);
 8
 9   DWORD dwCode ;
10   dwCode = SetErrorMode(0x400);    //虽然没有参数的值为0x400，但是这里设置也可以正常运行
11   //这里返回前面设置的值，0x1+0x2+0x4+0x8000=0x8007
12   printf("the first dwCode:0x%x\n", dwCode);
13   dwCode = SetErrorMode(0x0);
14   //由于之前设置了SEM_NOALIGNMENTFAULTEXCEPT，所以这里返回值为是0x400+0x4=0x404
15   printf("the second dwCode:0x%x\n", dwCode);
16   //在沙箱下返回0x404与0x400不相等，所以可以判断是在沙箱下。如果在正常情况下返回0x400
17   if (dwCode != 0x400)
18   {
19     printf("In Sandbox\n");
20   }
21   else
22   {
23     printf("In normal machine\n");
24   }
25
26   return 0;
27 }