VC determines the Windows operating system version

 

 

<Reprinted please indicate the source, please respect others' labor achievements>

 

 

// Headerfile

 

 

/** @ Brief OS version definition */

Enum winverdef

{

Win_ver_unknown =-1,

Win_ver_95 = 0,

Win_ver_98,

Win_ver_me,

Win_ver_nt4,

Win_ver_2k,

Win_ver_xp,

Win_ver_xp64,

Win_ver_2k3,

Win_ver_2k3r2,

Win_ver_vista,

Win_ver_2k8,

Win_ver_2k8r2,

Win_ver_win7,

};

 

/**

@ Brief: checks whether the current operating system is updated later than the specified operating system

@ See winverdef

 

@ Param [in] the operating system version specified by specver

@ Param [out] iresult returned result/n

If the returned result is greater than 0, the current operating system is newer than the specified operating system./n

If the returned result is 0, the current operating system is the same as the specified operating system./n

If the returned result is smaller than 0, the current operating system is earlier than the specified operating system.

 

@ Retval true: the function is successfully executed. Compare and judge the version based on the iresult parameter.

@ Retval false: The function failed to be executed.

 

@ Note none

 

@ Exception none

*/

Bool isoldersystem (winverdef specver, int * iresult );

 

/**

@ Brief returns the current operating system version

@ See winverdef

 

@ Param [out] enumeration value of winver's current operating system version

 

@ Return true: the function is successfully executed. The winver parameter returns the operating system version.

@ Return false: The function failed to be executed.

 

@ Note none

 

@ Exception none

*/

Bool getwindowsversion (winverdef * winver );

 

 

 

 

 

 

// CPP

// Define the current master version number of the Operating System

Enum winvermajor

{

Win_major_nt4_me_98_95 = 4,

Win_major_2k3r2_2k3_xp_2k = 5,

Win_major_win7_2k8r2_2k8_vista = 6,

};

 

// Define the current version number of the Operating System

Enum winverminor

{

Win_minor_2k8_vista_2k_nt4_95 = 0,

Win_minor_win7_2k8r2_xp = 1,

Win_minor_2k3r2_2k3_xp64 = 2,

Win_minor_98 = 10,

Win_minor_me = 90,

};

 

 

 

 

Typedef void (winapi * getnativesysteminfofunc) (lpsystem_info );

 

 

/** @ Brief returns the current operating system version */

Bool getwindowsversion (winverdef * winver)

{

Osversioninfoex osversioninfo;

Zeromemory (& osversioninfo, sizeof (osversioninfo ));

Osversioninfo. dwosversioninfosize = sizeof (osversioninfo );

* Winver = win_ver_unknown;

 

If (null = winver | false = getversionex (lposversioninfo) & osversioninfo ))

{

Return false;

}

 

Switch (osversioninfo. dwmajorversion)

{

Case win_major_nt4_me_98_95:

 

Switch (osversioninfo. dwminorversion)

{

Case win_minor_2k8_vista_2k_nt4_95:

If (ver_platform_win32_nt = osversioninfo. dwplatformid)

{

* Winver = win_ver_nt4;

}

Else

{

* Winver = win_ver_95;

}

Break;

Case win_minor_98:

* Winver = win_ver_98;

Break;

Case win_minor_me:

* Winver = win_ver_me;

Break;

Default:

Break;

}

 

Break;

 

Case win_major_2k3r2_2k3_xp_2k:

 

Switch (osversioninfo. dwminorversion)

{

Case win_minor_2k8_vista_2k_nt4_95:

* Winver = win_ver_2k;

Break;

Case win_minor_win7_2k8r2_xp:

* Winver = win_ver_xp;

Break;

Case win_minor_2k3r2_2k3_xp64:

If (ver_nt_workstation = osversioninfo. wproducttype)

{

* Winver = win_ver_xp64;

Break;

}

 

If (0! = Getsystemmetrics (sm_serverr2 ))

{

* Winver = win_ver_2k3r2;

}

Else

{

* Winver = win_ver_2k3;

}

Break;

Default:

Break;

}

 

Break;

 

Case win_major_win7_2k8r2_2k8_vista:

 

Switch (osversioninfo. dwminorversion)

{

Case win_minor_2k8_vista_2k_nt4_95:

If (ver_nt_workstation = osversioninfo. wproducttype)

{

* Winver = win_ver_vista;

}

Else

{

* Winver = win_ver_2k8;

}

Break;

Case win_minor_win7_2k8r2_xp:

If (ver_nt_workstation = osversioninfo. wproducttype)

{

* Winver = win_ver_win7;

}

Else

{

* Winver = win_ver_2k8r2;

}

Break;

Default:

Break;

}

 

Break;

 

Default:

Break;

}

 

Return true;

}

 

 

/** @ Brief: determines whether the current operating system is more updated than the system specified by sepcver */

Bool isoldersystem (winverdef specver, int * iresult)

{

If (null = iresult)

{

Return false;

}

 

Winverdef currver = win_ver_unknown;

 

If (false = getwindowsversion (& currver) | win_ver_unknown = currver)

{

Return false;

}

Else

{

* Iresult = currver-specver;

}

 

Return true;

}