IADsPrintJob interface (iads.h)

The IADsPrintJob interface is a dual interface that inherits from IADs. It is designed for representing a print job. When a user submits a request to a printer to print a document, a print job is created in the print queue. The property methods allow you to access the information about a print job. Such information includes which printer performs the printing, who submitted the document, when the document was submitted, and how many pages will be printed.

Inheritance

The IADsPrintJob interface inherits from IDispatch and IADs. IADsPrintJob also has these types of members:

Remarks

To manage a print job across a network, use the IADsPrintJobOperations interface, which supports the functionality to examine the status of a print job and to pause or resume the operation of printing the document, and so on.

To access any print jobs in a print queue, call the IADsPrintQueueOperations::PrintJobs method to obtain the collection object holding all the print jobs in the print queue.

Examples

The following code example shows how to manage a print job submitted to the printer, "\aMachine\aPrinter".

Dim pq As IADsPrintQueue
Dim pqo As IADsPrintQueueOperations
Dim pj As IADsPrintJob
Dim pjo As IADsPrintJobOperations
Dim pjs As IADsCollection

On Error GoTo Cleanup
 
Set pq = GetObject("WinNT://aMachine/aPrinter")
Set pqo = pq
For Each pj In pqo.PrintJobs
 MsgBox pj.class 
 MsgBox pj.description 
 MsgBox pj.HostPrintQueue
 Set pjo = pj
 If Hex(pjo.status) = 10 ' printing
 pjo.Pause
 Else
 pjo.Resume
 End If
Next

Cleanup:
 If (Err.Number<>0) Then
 MsgBox("An error has occurred. " & Err.Number)
 End If
 Set pq = Nothing
 Set pqo = Nothing
 Set pj = Nothing
 Set pjo = Nothing
 Set pjs = Nothing

The following code example shows how to manage a print job submitted to the printer, "\aMachine\aPrinter".

IADsPrintJobOperations *pjo = NULL;
IADsPrintQueueOperations *pqo = NULL;
IADsCollection *pColl = NULL;
IUnknown *pUnk = NULL;
IEnumVARIANT *pEnum = NULL;
VARIANT var;
ULONG lFetch = 0;
IDispatch *pDisp = NULL;

long status;

HRESULT hr = S_OK;
hr = ADsGetObject(L"WinNT://aMachine/aPrinter", 
 IID_IADsPrintQueueOperations, 
 (void**)&pqo);
if(FAILED(hr)){goto Cleanup;}

hr = pqo->PrintJobs(&pColl);

hr = pColl->get__NewEnum(&pUnk);
if(FAILED(hr)){goto Cleanup;}

hr = pUnk->QueryInterface(IID_IEnumVARIANT,(void**)&pEnum);
if(FAILED(hr)){goto Cleanup;}

// Now Enumerate
VariantInit(&var);
hr = pEnum->Next(1, &var, &lFetch);
while(hr == S_OK)
{
 if (lFetch == 1) 
 {
 pDisp = V_DISPATCH(&var);
 pDisp->QueryInterface(IID_IADsPrintJobOperations, 
 (void**)&pjo);

 pjo->get_Status(&status);
 printf("Job status: %x\n",status);
 if(stats == ADS_JOB_PRINTING) {
 pjo.Pause();
 }
 else {
 pjo.Resume();
 }
 pjo->Release();
 }
 pDisp->Release();
 VariantClear(&var);
 hr = pEnum->Next(1, &var, &lFetch);
};

Cleanup:
 VariantClear(&var);
 if(pColl) pColl->Release();
 if(pUnk) pUnk->Release();
 if(pEnum) pEnum->Release();
 if(pqo) pqo->Release();

Requirements

See also

IADs

IADsPrintJob Property Methods

IADsPrintJobOperations

IADsPrintQueueOperations::PrintJobs

IDispatch