Windows server 2016
I CreateSnapshot calling through the wmi, ready to generate snapshot, interface call returns 0, the call is successful, did not produce a snapshot, the following is the code

 BOOL CWMIUtil: : CreateSnapshot (ElementName would * and would be * strName) 
{
Retrieves the hr; 
IWbemClassObject * pVirtualSysSnapshotService=NULL; 
IWbemClassObject * pVirutalSysMgrService=NULL; 

IWbemContext * pCtx=0; 
IWbemCallResult * pResult=0; 

//retrieve the virtual machine snapshot instance 
BSTR snapshotClassPath=SysAllocString (L "Msvm_VirtualSystemSnapshotService"); 
BSTR VirtualSysMgrService=SysAllocString (L "Msvm_VirtualSystemManagementService"); 
Do {

//for the virtual machine management instance objects 
Hr=m_pSvc - & gt; GetObject (
VirtualSysMgrService, 
0, 
NULL, 
& PVirutalSysMgrService, 
NULL); 

Failed to get instance objects//
{if (FAILED (hr)) 
STD: : cout & lt; <"Failed to get the class object (Msvm_VirtualSystemManagementService). The Error code=0 x" & lt; Wprintf (L "Failed to get the class object (Msvm_VirtualSystemManagementService). The Error code=0 x \ n"); 
break; 
} 

STD: : cout & lt; <"Succeeded to get object (Msvm_VirtualSystemManagementService.)" & lt; 

//acquisition system snapshot instance objects 
Hr=m_pSvc - & gt; GetObject (
SnapshotClassPath, 
0, 
NULL, 
& PVirtualSysSnapshotService, 
NULL); 

Failed to get instance objects//
{if (FAILED (hr)) 
STD: : cout & lt; <"Failed to get the class object (Msvm_VirtualSystemSnapshotService). The Error code=0 x" & lt; Wprintf (L "Failed to get the class object (Msvm_VirtualSystemSnapshotService). The Error code=0 x \ n"); 
break; 
} 

//Call the GetTargetComputer 
IEnumWbemClassObject * pComputer=NULL; 
Would be comsystem [100]=L "SELECT * FROM Msvm_ComputerSystem"; 
Hr=m_pSvc - & gt; ExecQuery (
BSTR "WQL" (L), 
BSTR (comsystem), 
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, 
NULL, 
& PComputer 
); 
{if (FAILED (hr)) 
STD: : cout & lt; <"SELECT * FROM msvm_computersystem, Error code: 0 x % 08 lx" & lt; break; 
} 
STD: : cout & lt; <"Succeeded to query pComputer." & lt; 
IWbemClassObject * pObjectVirtualMachine=NULL; 

ULONG pReturn1=0; 
Wprintf (L "ElementName: % s \ n", strName); 

while (! FAILED (pComputer - & gt; Next (WBEM_INFINITE, 1, & amp; PObjectVirtualMachine, & amp; PReturn1))) {
The VARIANT vt. 
//Get the value of the path property from Msvm_VirtualSystemSnapshotService Class 
Hr=pObjectVirtualMachine - & gt; Get (L "ElementName" 0, & amp; Vt, 0, 0); 
{if (FAILED (hr)) 
STD: : wcout & lt; <"Failed to get the vm 's path." & lt; } 
Wprintf (L "ElementName: % s \ n", n. BstrVal); 

Cstrings csValue; 
The switch (n. N) 
{
Case VT_BSTR: 
CsValue=https://bbs.csdn.net/topics/CString (CStringW (vt. BstrVal)); 
break; 

Default: 
break; 
} 

If (WCSCMP (strName, csValue)==0) {
Break;; 
} 
PObjectVirtualMachine=NULL; 
} 

If (pObjectVirtualMachine==NULL) {
Printf (" could not find to create a snapshot of the virtual machine \ n "); 
break; 
} 


//get Msvm_VirtualSystemSnapshotSettingData class object 
IWbemClassObject * pVirtualSystemSnaphotSettingData=https://bbs.csdn.net/topics/NULL; 
Hr=m_pSvc - & gt; GetObject (L "Msvm_VirtualSystemSnapshotSettingData," 0, NULL, & amp; PVirtualSystemSnaphotSettingData, & amp; PResult); 


//create Msvm_VirtualSystemSnapshotSettingData class instances 
IWbemClassObject * pInpInstOfSnapshotSettingData=https://bbs.csdn.net/topics/NULL; 
Hr=pVirtualSystemSnaphotSettingData - & gt; SpawnInstance (
0, 
& PInpInstOfSnapshotSettingData); 
{if (FAILED (hr)) 
Wprintf (L "Error SpawnInstance Msvm_VirtualSystemSnapshotSettingData: 0 x % 08 lx \ n", hr); 
break; 
} 
STD: : cout & lt; <"Succeeded to created the instance (Msvm_VirtualSystemSnapshotSettingData.)" & lt; //retrieve the computer system will be a snapshot of the virtual machine instance of the 
The VARIANT ConsistencyLevel; 
VariantInit (& amp; ConsistencyLevel); 
V_VT (& amp; ConsistencyLevel)=VT_BSTR; 
V_BSTR (& amp; ConsistencyLevel)=SysAllocString (L "2"); 

Hr=pInpInstOfSnapshotSettingData - & gt; Put (L "ConsistencyLevel," 0, & amp; ConsistencyLevel CIM_UINT8); 
{if (FAILED (hr)) 
Wprintf (L "Failed to set the property (ConsistencyLevel), Erorr code: 0 x % 08 lx \ n", hr); 
break; 
} 
Wprintf (L "Succeeded to set the property (ConsistencyLevel) \ n"); 
VariantClear (& amp; ConsistencyLevel); 

/* 
The VARIANT IgnoreNonSnapshottableDisks; 
V_VT (& amp; IgnoreNonSnapshottableDisks)=VT_BOOL; 
V_UI8 (& amp; IgnoreNonSnapshottableDisks)=true; 

Hr=pInpInstOfSnapshotSettingData - & gt; Put (L "IgnoreNonSnapshottableDisks," 0, & amp; IgnoreNonSnapshottableDisks CIM_BOOLEAN); 
{if (FAILED (hr)) 
Wprintf (L "Failed to set the property (IgnoreNonSnapshottableDisks), Erorr code: 0 x % 08 lx \ n", hr); 
break; 
} 
VariantClear (& amp; nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull