/// <summary>
/// A callback that copies PRINTER_INFO_8_AND_9 fields from an unmanaged buffer
/// </summary>
public void Callback(HGlobalBuffer pPrinterBuffer)
{
// PRINTER_INFO_8 layout from http://msdn.microsoft.com/en-us/library/dd162851(VS.85).aspx
//
// typedef struct _PRINTER_INFO_8 {
// LPDEVMODE pDevMode;
// } PRINTER_INFO_8, *PPRINTER_INFO_8;
//
// PRINTER_INFO_9 layout from http://msdn.microsoft.com/en-us/library/dd162852(VS.85).aspx
//
// typedef struct _PRINTER_INFO_9 {
// LPDEVMODE pDevMode;
// } PRINTER_INFO_9, *PPRINTER_INFO_9;
// LPDEVMODE pDevMode;
PRINTER_INFO_8_AND_9 = new PRINTER_INFO_8_AND_9();
bool shouldRelease = false;
pPrinterBuffer.Handle.DangerousAddRef(ref shouldRelease);
try
{
IntPtr pDevMode = Marshal.ReadIntPtr(pPrinterBuffer.Handle.DangerousGetHandle());
if (pDevMode != IntPtr.Zero)
{
PRINTER_INFO_8_AND_9.pDevMode = DevMode.FromIntPtr(pDevMode);
}
}
finally
{
if (shouldRelease)
{
pPrinterBuffer.Handle.DangerousRelease();
}
}
}
/// <summary>
/// A callback that copies PRINTER_INFO_2 fields from an unmanaged buffer
/// </summary>
public void Callback(HGlobalBuffer pPrinterBuffer)
{
// PRINTER_INFO_2 layout from http://msdn.microsoft.com/en-us/library/dd162845(VS.85).aspx
//
//typedef struct _PRINTER_INFO_2 {
// LPTSTR pServerName;
// LPTSTR pPrinterName;
// LPTSTR pShareName;
// LPTSTR pPortName;
// LPTSTR pDriverName;
// LPTSTR pComment;
// LPTSTR pLocation;
// LPDEVMODE pDevMode;
// LPTSTR pSepFile;
// LPTSTR pPrintProcessor;
// LPTSTR pDatatype;
// LPTSTR pParameters;
// PSECURITY_DESCRIPTOR pSecurityDescriptor;
// DWORD Attributes;
// DWORD Priority;
// DWORD DefaultPriority;
// DWORD StartTime;
// DWORD UntilTime;
// DWORD Status;
// DWORD cJobs;
// DWORD AveragePPM;
// } PRINTER_INFO_2, *PPRINTER_INFO_2;
PRINTER_INFO_2 = new PRINTER_INFO_2();
bool shouldRelease = false;
pPrinterBuffer.Handle.DangerousAddRef(ref shouldRelease);
try
{
IntPtr ptr = pPrinterBuffer.Handle.DangerousGetHandle();
// LPTSTR pPrinterName;
IntPtr pPrinterName = Marshal.ReadIntPtr(ptr, 1 * Marshal.SizeOf(typeof(IntPtr)));
if (pPrinterName != IntPtr.Zero)
{
PRINTER_INFO_2.pPrinterName = Marshal.PtrToStringUni(pPrinterName);
}
// LPTSTR pPortName;
IntPtr pPortName = Marshal.ReadIntPtr(ptr, 3 * Marshal.SizeOf(typeof(IntPtr)));
if (pPortName != IntPtr.Zero)
{
PRINTER_INFO_2.pPortName = Marshal.PtrToStringUni(pPortName);
}
// LPTSTR pDriverName;
IntPtr pDriverName = Marshal.ReadIntPtr(ptr, 4 * Marshal.SizeOf(typeof(IntPtr)));
if (pDriverName != IntPtr.Zero)
{
PRINTER_INFO_2.pDriverName = Marshal.PtrToStringUni(pDriverName);
}
// LPDEVMODE pDevMode;
IntPtr pDevMode = Marshal.ReadIntPtr(ptr, 7 * Marshal.SizeOf(typeof(IntPtr)));
if (pDevMode != IntPtr.Zero)
{
PRINTER_INFO_2.pDevMode = DevMode.FromIntPtr(pDevMode);
}
}
finally
{
if (shouldRelease)
{
pPrinterBuffer.Handle.DangerousRelease();
}
}
}