自毁程序

 1 void SelfDestroy()
 2 {
 3     // temporary .bat file
 4     static const WCHAR tempbatname[] = L"_uninsep.bat";
 5     CString csCmd;    //bat contents
 6     std::string szCmd;
 7 
 8     static WCHAR templ[] =
 9         L":Repeat\r\n"
10         L"del \"%s\"\r\n"
11         L"if exist \"%s\" goto Repeat\r\n"
12         L"rmdir \"%s\"\r\n"
13         L"del \"%s\"";
14     
15     WCHAR modulename[_MAX_PATH];    // absolute path of calling .exe file
16     WCHAR temppath[_MAX_PATH];      // absolute path of temporary .bat file
17     WCHAR folder[_MAX_PATH];
18     // absolute path of temporary .bat file
19     GetTempPath(_MAX_PATH, temppath);
20     wcscat_s(temppath, tempbatname);
21     // absolute path of calling .exe file
22     GetModuleFileName(NULL, modulename, MAX_PATH);
23     wcscpy_s(folder, modulename);
24     
25     PWCHAR pb = wcsrchr(folder, ‘\\‘);
26     if (pb != NULL)
27         *pb = 0;
28 
29     HANDLE hf;
30 
31     hf = CreateFile(temppath, GENERIC_WRITE, 0, NULL,
32         CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
33     //Long，如执行成功，则返回文件句柄。INVALID_HANDLE_VALUE表示出错，会设置GetLastError。即使函数成功，但若文件存在，且指定了CREATE_ALWAYS 或 OPEN_ALWAYS，GetLastError也会设为ERROR_ALREADY_EXISTS
34     if (hf != INVALID_HANDLE_VALUE)
35     {
36         csCmd.Format(templ, modulename, modulename, folder, temppath);
37         CStringToString(csCmd, szCmd);
38         DWORD len;
39         PWCHAR bat;
40         //缓存大小最大1024
41         WriteFile(hf, szCmd.c_str(), szCmd.size(), &len, NULL);
42         CloseHandle(hf);
43         ShellExecuteW(NULL, L"open", temppath, NULL, NULL, SW_HIDE);
44     }
45 }