C++ 使用LockWorkStation()的过程遇到的问题[通俗易懂]

 1 #include <windows.h>
 2 #include <stdio.h>
 3 
 4 #pragma comment( lib, "user32.lib" )
 5 
 6 int main()
 7 {
 8     // Lock the workstation.
 9 
10     if( !LockWorkStation() )
11         printf ("LockWorkStation failed with %lu \n", GetLastError());
12 
13     return 0;
14 }

#if (_WIN32_WINNT >= 0x0500)
WINUSERAPI BOOL WINAPI LockWorkStation(void);
#endif

#ifndef WINVER
#define WINVER 0x0400
/*
 * If you need Win32 API features newer the Win95 and WinNT then you must
 * define WINVER before including windows.h or any other method of including
 * the windef.h header.
 */
#endif
#ifndef _WIN32_WINNT
#define _WIN32_WINNT WINVER
/*
 * There may be the need to define _WIN32_WINNT to a value different from
 * the value of WINVER.  I don't have any example of why you would do that.
 * However, if you must then define _WIN32_WINNT to the value required before
 * including windows.h or any other method of including the windef.h header.
 */
#endif

 1 //#define WINVER 0x0500
 2 #define _WIN32_WINNT 0x0500
 3 
 4 #include <windows.h>
 5 #include <stdio.h>
 6 
 7 using namespace std;
 8 
 9 int main()
10 {
11     // Lock the workstation.
12 
13     if( !LockWorkStation() )
14         printf ("LockWorkStation failed with %lu \n", GetLastError());
15 
16     return 0;
17 }