Unable to load DLL - The file is there

[Nuno Magalhaes]

I have a problem loading a DLL file that is exactly in the same
directory of the executable. The DLL is not in .NET format but can be
accessed through P/Invoke.

This never happened to me.

My Platform Invoke looks something like this:

[ DllImport("WRAPI.dll", EntryPoint="WRAPIEnumerateDevices") ]
static extern int _EnumerateDevices(out IntPtr ppDeviceList, out int
plItems);

....
_EnumerateDevices(...)
....

[Willy Denoyette [MVP]]

What about it's dependencies, are they also there or in the path? What tool
was used to build the DLL and which version?

Willy.

"Nuno Magalhaes" <nu************@hotmail.com> wrote in message
news:11**********************@p10g2000cwp.googlegr oups.com...
|I have a problem loading a DLL file that is exactly in the same
| directory of the executable. The DLL is not in .NET format but can be
| accessed through P/Invoke.
|
| This never happened to me.
|
| My Platform Invoke looks something like this:
|
| [ DllImport("WRAPI.dll", EntryPoint="WRAPIEnumerateDevices") ]
| static extern int _EnumerateDevices(out IntPtr ppDeviceList, out int
| plItems);
|
| ...
| _EnumerateDevices(...)
| ...
|

[Nuno Magalhaes]

I used MS Visual Studio .NET 2003 and the source code compiled OK. The
code is based upon multiple DeviceIoControl calls and doesn't seem to
exist nothing excentric.

What DLL should I be missing? Note that I didn't install the Windows
DDK, I just found an header that allows the DLL to work in Windows XP
SP1 or later.

Dependency Walker says that MSJAVA.DLL is missing, but even with
MSJAVA.DLL in system32 folder says that "At least one module has an
unresolved import due to a missing export function in a delay-load
dependent module". And I guess the problem is with the MPR.DLL.

Any ideas?

Willy Denoyette [MVP] wrote:

What about it's dependencies, are they also there or in the path? What tool
was used to build the DLL and which version?

Willy.

"Nuno Magalhaes" <nu************@hotmail.com> wrote in message
news:11**********************@p10g2000cwp.googlegr oups.com...
|I have a problem loading a DLL file that is exactly in the same
| directory of the executable. The DLL is not in .NET format but can be
| accessed through P/Invoke.
|
| This never happened to me.
|
| My Platform Invoke looks something like this:
|
| [ DllImport("WRAPI.dll", EntryPoint="WRAPIEnumerateDevices") ]
| static extern int _EnumerateDevices(out IntPtr ppDeviceList, out int
| plItems);
|
| ...
| _EnumerateDevices(...)
| ...
|

[Nuno Magalhaes]

Can you download the WRAPI.dll from:
http://sysnet.ucsd.edu/pawn/wrapi/download.html

....and do a DLLImport like this...:
-----------------------------------
[ DllImport("WRAPI.dll", EntryPoint="WRAPIOpenNdisDevice") ]
static extern int _OpenNdisDevice([MarshalAs(UnmanagedType.LPWStr)]
String pwDeviceName);
public static bool OpenNdisDevice(String deviceName)
{
return (_OpenNdisDevice(deviceName) == 0);
}
-----------------------------------

....and tell me what are the DLL's missing in your computer?
Although I'm not using that version. I built using the MFC 7.1
dependencies and not the 4.2d.

[Nuno Magalhaes]

If it compiles in C++ it should load correctly in C# wouldn't it be?

[Willy Denoyette [MVP]]

This program opens the \\\\.\\\\Ndisuio device, do you have the device
driver installed?

Willy.
"Nuno Magalhaes" <nu************@hotmail.com> wrote in message
news:11**********************@v46g2000cwv.googlegr oups.com...

|I used MS Visual Studio .NET 2003 and the source code compiled OK. The
| code is based upon multiple DeviceIoControl calls and doesn't seem to
| exist nothing excentric.
|
| What DLL should I be missing? Note that I didn't install the Windows
| DDK, I just found an header that allows the DLL to work in Windows XP
| SP1 or later.
|
| Dependency Walker says that MSJAVA.DLL is missing, but even with
| MSJAVA.DLL in system32 folder says that "At least one module has an
| unresolved import due to a missing export function in a delay-load
| dependent module". And I guess the problem is with the MPR.DLL.
|
| Any ideas?
|
| Willy Denoyette [MVP] wrote:
| > What about it's dependencies, are they also there or in the path? What
tool
| > was used to build the DLL and which version?
| >
| > Willy.
| >
| > "Nuno Magalhaes" <nu************@hotmail.com> wrote in message
| > news:11**********************@p10g2000cwp.googlegr oups.com...
| > |I have a problem loading a DLL file that is exactly in the same
| > | directory of the executable. The DLL is not in .NET format but can be
| > | accessed through P/Invoke.
| > |
| > | This never happened to me.
| > |
| > | My Platform Invoke looks something like this:
| > |
| > | [ DllImport("WRAPI.dll", EntryPoint="WRAPIEnumerateDevices") ]
| > | static extern int _EnumerateDevices(out IntPtr ppDeviceList, out int
| > | plItems);
| > |
| > | ...
| > | _EnumerateDevices(...)
| > | ...
| > |
|

[Nuno Magalhaes]

Yes, I think I have. Tried with an wireless USB adapter and a wireless
linksys card and the error is the same, even with the WrapiTest.cpp.

Iniside the DLL, even before it begins main() of WrapiTest.cpp, it
gives the error "IOCTL_NDISUIO_BIND_WAIT failed 32". The error 32 is in
hexadecimal... it's 50 and corresponds to the GetLastError that is
ERROR_NOT_SUPPORTED.

Any ideas, again?

Willy Denoyette [MVP] wrote:

This program opens the \\\\.\\\\Ndisuio device, do you have the device
driver installed?

Willy.
"Nuno Magalhaes" <nu************@hotmail.com> wrote in message
news:11**********************@v46g2000cwv.googlegr oups.com...

|I used MS Visual Studio .NET 2003 and the source code compiled OK. The
| code is based upon multiple DeviceIoControl calls and doesn't seem to
| exist nothing excentric.
|
| What DLL should I be missing? Note that I didn't install the Windows
| DDK, I just found an header that allows the DLL to work in Windows XP
| SP1 or later.
|
| Dependency Walker says that MSJAVA.DLL is missing, but even with
| MSJAVA.DLL in system32 folder says that "At least one module has an
| unresolved import due to a missing export function in a delay-load
| dependent module". And I guess the problem is with the MPR.DLL.
|
| Any ideas?
|
| Willy Denoyette [MVP] wrote:
| > What about it's dependencies, are they also there or in the path? What
tool
| > was used to build the DLL and which version?
| >
| > Willy.
| >
| > "Nuno Magalhaes" <nu************@hotmail.com> wrote in message
| > news:11**********************@p10g2000cwp.googlegr oups.com...
| > |I have a problem loading a DLL file that is exactly in the same
| > | directory of the executable. The DLL is not in .NET format but can be
| > | accessed through P/Invoke.
| > |
| > | This never happened to me.
| > |
| > | My Platform Invoke looks something like this:
| > |
| > | [ DllImport("WRAPI.dll", EntryPoint="WRAPIEnumerateDevices") ]
| > | static extern int _EnumerateDevices(out IntPtr ppDeviceList, out int
| > | plItems);
| > |
| > | ...
| > | _EnumerateDevices(...)
| > | ...
| > |
|

[Willy Denoyette [MVP]]

This error is returned from the DeviceIoControl call in InitInstance, what
makes me think you don't have the right device driver installed or this code
was written for another device.
Willy.
"Nuno Magalhaes" <nu************@hotmail.com> wrote in message
news:11*********************@i39g2000cwa.googlegro ups.com...
| Yes, I think I have. Tried with an wireless USB adapter and a wireless
| linksys card and the error is the same, even with the WrapiTest.cpp.
|
| Iniside the DLL, even before it begins main() of WrapiTest.cpp, it
| gives the error "IOCTL_NDISUIO_BIND_WAIT failed 32". The error 32 is in
| hexadecimal... it's 50 and corresponds to the GetLastError that is
| ERROR_NOT_SUPPORTED.
|
| Any ideas, again?
|
| Willy Denoyette [MVP] wrote:
| > This program opens the \\\\.\\\\Ndisuio device, do you have the device
| > driver installed?
| >
| > Willy.
| > "Nuno Magalhaes" <nu************@hotmail.com> wrote in message
| > news:11**********************@v46g2000cwv.googlegr oups.com...
| >
| > |I used MS Visual Studio .NET 2003 and the source code compiled OK. The
| > | code is based upon multiple DeviceIoControl calls and doesn't seem to
| > | exist nothing excentric.
| > |
| > | What DLL should I be missing? Note that I didn't install the Windows
| > | DDK, I just found an header that allows the DLL to work in Windows XP
| > | SP1 or later.
| > |
| > | Dependency Walker says that MSJAVA.DLL is missing, but even with
| > | MSJAVA.DLL in system32 folder says that "At least one module has an
| > | unresolved import due to a missing export function in a delay-load
| > | dependent module". And I guess the problem is with the MPR.DLL.
| > |
| > | Any ideas?
| > |
| > | Willy Denoyette [MVP] wrote:
| > | > What about it's dependencies, are they also there or in the path?
What
| > tool
| > | > was used to build the DLL and which version?
| > | >
| > | > Willy.
| > | >
| > | > "Nuno Magalhaes" <nu************@hotmail.com> wrote in message
| > | > news:11**********************@p10g2000cwp.googlegr oups.com...
| > | > |I have a problem loading a DLL file that is exactly in the same
| > | > | directory of the executable. The DLL is not in .NET format but can
be
| > | > | accessed through P/Invoke.
| > | > |
| > | > | This never happened to me.
| > | > |
| > | > | My Platform Invoke looks something like this:
| > | > |
| > | > | [ DllImport("WRAPI.dll", EntryPoint="WRAPIEnumerateDevices") ]
| > | > | static extern int _EnumerateDevices(out IntPtr ppDeviceList, out
int
| > | > | plItems);
| > | > |
| > | > | ...
| > | > | _EnumerateDevices(...)
| > | > | ...
| > | > |
| > |
|