Red Gate forums: PInvoke.Net

Request for XpsPrint.dll

mgaffigan — Sat, 25 May 2013 00:06:15 GMT

I have a signature for XpsPrint.dll - StartXpsPrintJob, but nowhere to put it. I was hoping someone could create the new module. Thank you again for the great service provided to the .Net community.

I will post the signature below until the topic is created.

Code:

#region P/Invokes

public static void StartXpsPrintJobSafe(
string printerName, string jobName, string outputFileName,
SafeWaitHandle progressEvent, SafeWaitHandle completeEvent,
bool[] pagesToPrint,
bool getPrintJob, out IXpsPrintJob printJob,
out IXpsPrintJobStream documentStream,
bool getTicketStream, out IXpsPrintJobStream ticketStream)
{
if (string.IsNullOrWhiteSpace(printerName))
throw new ArgumentNullException("printerName");

byte[] pagesToPrintB = null;
UInt32 cpagesToPrintB = 0;
if (pagesToPrint != null && pagesToPrint.Length > 0)
{
pagesToPrintB = pagesToPrint
.Select(b => b ? (byte)1 : (byte)0)
.ToArray();
cpagesToPrintB = (UInt32)pagesToPrintB.Length;
}

IntPtr ppPrintJob = IntPtr.Zero;
IntPtr ppTicketStream = IntPtr.Zero;
// memory is allocated by StartXpsPrintJob, we just specify we want something
if (getPrintJob)
{
ppPrintJob = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(IntPtr)));
Marshal.StructureToPtr(IntPtr.Zero, ppPrintJob, false);
}
if (getTicketStream)
{
ppTicketStream = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(IntPtr)));
Marshal.StructureToPtr(IntPtr.Zero, ppTicketStream, false);
}

// take references on safehandles
IntPtr pProgressEvent = IntPtr.Zero;
IntPtr pCompleteEvent = IntPtr.Zero;

if (progressEvent != null)
{
bool success = false;
progressEvent.DangerousAddRef(ref success);
if (!success)
throw new ObjectDisposedException("progressEvent");
pProgressEvent = progressEvent.DangerousGetHandle();
}
if (completeEvent != null)
{
bool success = false;
completeEvent.DangerousAddRef(ref success);
if (!success)
throw new ObjectDisposedException("completeEvent");
pCompleteEvent = completeEvent.DangerousGetHandle();
}

RuntimeHelpers.PrepareConstrainedRegions();
try
{
// Preservesig is set, so this will throw on failure
StartXpsPrintJob(printerName, jobName, outputFileName,
pProgressEvent, pCompleteEvent,
pagesToPrintB, cpagesToPrintB,
ppPrintJob, out documentStream, ppTicketStream);
}
finally
{
if (pProgressEvent != IntPtr.Zero)
progressEvent.DangerousRelease();
if (pCompleteEvent != IntPtr.Zero)
completeEvent.DangerousRelease();
}

if (getPrintJob)
{
IntPtr pPrintJob = (IntPtr)Marshal.PtrToStructure(ppPrintJob, typeof(IntPtr));
printJob = (IXpsPrintJob)Marshal.GetTypedObjectForIUnknown(pPrintJob, typeof(IXpsPrintJob));
Marshal.FreeCoTaskMem(ppPrintJob);
}
else
{
printJob = null;
}

if (getTicketStream)
{
IntPtr pTicketStream = (IntPtr)Marshal.PtrToStructure(ppTicketStream, typeof(IntPtr));
ticketStream = (IXpsPrintJobStream)Marshal.GetTypedObjectForIUnknown(pTicketStream, typeof(IXpsPrintJobStream));
Marshal.FreeCoTaskMem(ppTicketStream);
}
else
{
ticketStream = null;
}
}

[DllImport("XpsPrint.dll", EntryPoint = "StartXpsPrintJob", PreserveSig = false)]
private static extern void StartXpsPrintJob(
// 0
[MarshalAs(UnmanagedType.LPWStr)] String printerName,
[MarshalAs(UnmanagedType.LPWStr)] String jobName,
// 2
[MarshalAs(UnmanagedType.LPWStr)] String outputFileName,
IntPtr progressEvent, // HANDLE
// 4
IntPtr completionEvent, // HANDLE
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 6)] byte[] printablePagesOn,
// 6
UInt32 printablePagesOnCount,
IntPtr xpsPrintJob,
// 8
out IXpsPrintJobStream documentStream,
IntPtr printTicketStream);

#endregion

#region Structures

[Guid("7a77dc5f-45d6-4dff-9307-d8cb846347ca")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IXpsPrintJobStream
{
void Read([MarshalAs(UnmanagedType.LPArray)] byte[] pv, uint cb, out uint pcbRead);
void Write([MarshalAs(UnmanagedType.LPArray)] byte[] pv, uint cb, out uint pcbWritten);
void Close();
}

[Guid("5ab89b06-8194-425f-ab3b-d7a96e350161")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IXpsPrintJob
{
void Cancel();
void GetJobStatus(out XPS_JOB_STATUS jobStatus);
}

[StructLayout(LayoutKind.Sequential)]
internal struct XPS_JOB_STATUS
{
public UInt32 jobId;
public Int32 currentDocument;
public Int32 currentPage;
public Int32 currentPageTotal;
public XPS_JOB_COMPLETION completion;
public Int32 jobStatus;
};

internal enum XPS_JOB_COMPLETION
{
XPS_JOB_IN_PROGRESS = 0,
XPS_JOB_COMPLETED = 1,
XPS_JOB_CANCELLED = 2,
XPS_JOB_FAILED = 3
}

internal enum WAIT_RESULT
{
WAIT_OBJECT_0 = 0,
WAIT_ABANDONED = 0x80,
WAIT_TIMEOUT = 0x102,
WAIT_FAILED = -1
}

#endregion

RE: Request for version.dll

Brian Donahue — Thu, 14 Mar 2013 10:03:52 GMT

You can add functions to "version" by typing in the banner on the top of the page you get when you expand the "version" node.

RE: Request for version.dll

Brian Donahue — Thu, 14 Mar 2013 10:02:40 GMT

Please feel free to edit - this is user-contributed content and not moderated by Red Gate.

There is a "version" module in PInvoke wiki, right there on the left-hand side.

RE: Request for version.dll

Lord KiRon — Thu, 14 Mar 2013 07:47:37 GMT

Hi guys,
Several things:

1. The topic is here since August but this was not added to site, the "version" node on site is empty

2. The GetFileVersionInfo() added to wrong category - kernel32 , although it shows correct DllImport in signature - version.dll

3. The pinvoke stated here is wrong, it's not x64 bit compatible as handles (like in GetFileVersionInfoSize) should not be defined to int ans so on.

RE: IMAGE_DOS_HEADER (Structures)

Brian Donahue — Mon, 04 Mar 2013 10:00:07 GMT

I suppose the best thing to do would be to put this under "Notes" for the function...

RE: Propsys.dll P/Invoke module request

Brian Donahue — Fri, 01 Mar 2013 16:14:25 GMT

Hello,

I have added the propsys module, so please feel free to add any signatures you want to that module.

IMAGE_DOS_HEADER (Structures)

Sam Hobbs — Thu, 28 Feb 2013 16:56:35 GMT

I think the previous definition of the IMAGE_DOS_HEADER Structure will not work. I added an "unsafe" C# definition. The other one will not work because it uses "char" and since the data is ASCII the char will use 16 bytes. The unsafe version uses "fixed" which allows use when references are not allowed.

I do not know how to add a note explaining that the unsafe version will work in situations where the other one will not.

Propsys.dll P/Invoke module request

jellever — Thu, 28 Feb 2013 14:48:13 GMT

[DllImport("Propsys.dll")]
static extern int PSGetItemPropertyHandler(IShellItem punkItem, bool fReadWrite, ref Guid riid, out IPropertyStore ppv);

RE: PInvoke SetupVerifyInfFile() C#

Brian Donahue — Tue, 05 Feb 2013 12:32:33 GMT

The PInvoke forum is to ask for or comment on content of the PInvoke website, and does not offer any code help. Probably Stack Overflow is a better place to ask this sort of question.

In my experience, you have to be careful with structs and make sure the data length adds up. I've also used a lot of attributes that seem to help sometimes like

Code:

[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct UNICODE_STRING...

And trying to force Marshal to use certain unmanaged datatypes like this:

Code:

void DefineDocument([MarshalAs(UnmanagedType.LPWStr)] String url,
...
[MarshalAs(UnmanagedType.Interface)] out ISymUnmanagedDocumentWriter RetVal);

Good luck!

PInvoke SetupVerifyInfFile() C#

tttony — Sun, 03 Feb 2013 20:30:31 GMT

Hi everybody

I'm having problems with SetupVerifyInfFile() in C#, on pinvoke.net there are no examples so I'm here looking for some light

The function raises an exception PInvokeStackImbalance, after of a deep research on internet the exception it's raised because the Type of the variables

This is the C# code:

Code:

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct SP_ALTPLATFORM_INFO_V2
{
public uint cbSize;

public uint Platform;
public uint MajorVersion;
public uint MinorVersion;

public uint ProcessorArchitecture;
public uint Flags;

public uint FirstValidatedMajorVersion;
public uint FirstValidatedMinorVersion;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct SP_INF_SIGNER_INFO
{
public Int32 cbSize;
public string CatalogFile;
public string DigitalSigner;
public string DigitalSignerVersion;
}
[DllImport("setupapi.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool SetupVerifyInfFile([MarshalAs(UnmanagedType.LPTStr)] string InfName,
SP_ALTPLATFORM_INFO_V2 AltPlatformInfo,
out SP_INF_SIGNER_INFO InfFileName);

static void Main(string[] args)
{
SP_ALTPLATFORM_INFO_V2 pinfo = new SP_ALTPLATFORM_INFO_V2();
pinfo.cbSize =(uint)Marshal.SizeOf(pinfo);
//pinfo.Platform = VER_PLATFORM_WIN32_NT;

SP_INF_SIGNER_INFO pfname = new SP_INF_SIGNER_INFO();
pfname.cbSize = Marshal.SizeOf(pfname);

if (SetupVerifyInfFile(@"C:\WINDOWS\INF\OEM12.INF", pinfo, out pfname)) // <-- The exception PInvokeStackImbalance it's raised here!
{

}
}

The problem is in SP_ALTPLATFORM_INFO_V2 struct, if I comment all the inside variables it does not raise the exception so the SP_INF_SIGNER_INFO struct it's fine but obviously the function return FALSE

I have changed the variables types to uint, int, Int16, Int32, Int64... but without good results

Here is the C language code of the SP_ALTPLATFORM_INFO_V2 struct

http://msdn.microsoft.com/en-us/library/aa377636%28v=vs.85%29.aspx

Code:

typedef struct _SP_ALTPLATFORM_INFO_V2 {
DWORD cbSize;
DWORD Platform;
DWORD MajorVersion;
DWORD MinorVersion;
WORD ProcessorArchitecture;
WORD Flags;
DWORD FirstValidatedMajorVersion;
DWORD FirstValidatedMinorVersion;
} SP_ALTPLATFORM_INFO_V2, *PSP_ALTPLATFORM_INFO_V2;

And the SetupVerifyInfFile() in C language:

http://msdn.microsoft.com/en-us/library/aa377447%28v=vs.85%29.aspx

Code:

BOOL SetupVerifyInfFile(
__in PCWSTR InfName,
__in PSP_ALTPLATFORM_FORM AltPlatformInfo,
__out PSP_INF_SIGNER_INFO_W InfFileName
);

Thanks in advance!

RE: Using C++ dll having header file in C#

Chris.Allen — Wed, 16 Jan 2013 15:17:24 GMT

You are *much* better off asking this question here:
http://stackoverflow.com/questions

tag it with: C# interop

Using C++ dll having header file in C#

chaitu18 — Tue, 15 Jan 2013 05:45:09 GMT

I am totally new in C++ and I want to use C++ dll (having header file) in

C# program. Please find below header file.

Code:

#pragma once
#define DAILY_PERIOD 24*60
#define MIN_PERIOD 1

#ifdef API_DLL
#define METHOD_TYPE __declspec(dllexport)
#else
#define METHOD_TYPE __declspec(dllimport)
#endif

struct Quote {
unsigned long Date;
float Price;
float Open;
float High;
float Low;
float Volume;
float OpenInterest;
};

class METHOD_TYPE CMinuteApiCallback
{
public:

virtual int quote_notify( const char* symbol, int interval, int nMaxSize, Quotation *pQuotes, unsigned long echo)=0;

};

class METHOD_TYPE CMinuteApi
{
public:
CMinuteApi(void);

int Initialise(char *serialkey, CMinuteApiCallback* callback);

int GetQuote(char * symbol, int periodicity, unsigned long lasttimeupdate, unsigned long echo);

int DeleteQuote(char * symbol, int periodicity);

~CMinuteApi(void);
};

So please let me know how can I call all these methods in my C# program. c# Example of above code is highly appreciated.Thanks in advance.

coredll P/Invoke

Petere — Wed, 09 Jan 2013 10:28:18 GMT

I find out that there is missing GetStdioPathW and SetStdioPathW in Pinvoke.net Add-in

Is there any other method that can read stdout, stdin, stderror settings?

GetThreadId P/Invoke

ZenLulz — Tue, 08 Jan 2013 13:17:05 GMT

Dear community,

Another missed function :

Code:

/// <summary>
/// Retrieves the thread identifier of the specified thread.
/// </summary>
/// <param name="hThread">
/// A handle to the thread. The handle must have the THREAD_QUERY_INFORMATION or THREAD_QUERY_LIMITED_INFORMATION access right.
/// For more information about access rights, see Thread Security and Access Rights.
/// </param>
/// <returns>
/// If the function succeeds, the return value is a thread id to the specified handle.
/// If the function fails, the return value is zero. To get extended error information, call GetLastError.
/// </returns>
[DllImport("kernel32.dll", SetLastError = true)]
public static extern int GetThreadId(IntPtr hThread);

It can be added to the wiki.

GetProcessId P/Invoke

ZenLulz — Tue, 01 Jan 2013 19:51:52 GMT

Dear community,

The function DWORD WINAPI GetProcessId(HANDLE); is missing in your wiki.

This is the corresponding P/Invoke function :

Code:

/// <summary>
/// Retrieves the process identifier of the specified process.
/// </summary>
/// <param name="hProcess">A handle to the process. The handle must have the PROCESS_QUERY_INFORMATION or PROCESS_QUERY_LIMITED_INFORMATION access right. For more information, see Process Security and Access Rights.</param>
/// <returns>If the function succeeds, the return value is an open handle to the specified process. If the function fails, the return value is NULL. To get extended error information, call <see cref="Marshal.GetLastWin32Error"/>.</returns>
[DllImport("kernel32.dll", SetLastError = true)]
public static extern int GetProcessId(IntPtr hProcess);

Feel free to add it.