Importing C++ DLL into C# Smart Device Application
I am asking this question after I looked up tons of blogs and webpages and tried almost everything people explained.
I have no problem with importing C++ Win32 DLL into C# Windows Application. And it was actually straight forward.
But what I am trying to do is importing C++ DLL into C# "Smart Device Application," especially using Visual Studio 2005.
In my (TestDLL.dll) C++ DLL source file I have the following lines:
#if defined (__cplusplus)
extern "C" {
#endif
__declspec(dllexport) void __cdecl foo();
#if defined (__cplusplus)
};
#endif
extern void __cdecl foo()
{
}
And my C# wrapper (Wrapper.cs) class has the following:
[DllImport(TestDLL.dll)]
private开发者_C百科 static extern void foo();
public static void fooCS()
{
foo();
}
And my C# driver class is calling the following:
Wrapper.fooCS();
And I connected my Pocket PC 2003 device to PC, then I started debugging and ran the program. And I get the following error message:
MissingMethodException: PInvoke DLL 'TestDLL.dll' cannot be found.
I double triple checked my DLL location, so it cannot be the problem. And then I tried using many different templates from Visual Studio 2005.
- MFC Smart Device DLL
- MFC Smart Device
- Application Win32 Smart Device
- Project ATL Smart Device Project
- Win32 DLL
But nothing seemed to work. Always the same runtime error.
I also tried to changing CPU configuration when building the solution. But no help.
So I am now seeking for experts' helps.
FYI, my device has the following platform:
- Windows Mobile 6 Classic
- CE OS 5.2.1433
- Processor: ARM920T
And the development environment is...
- Windows 7 64bits
- Visual Studio 2005
Thank you in advance,
Sorry, I was being really stupid.
The reason why the application could not load the DLL file was because I was running debug on a mobile device. And it caused a path problem.
So I manually copied the DLL file and application's EXE file to the mobile device and ran the program. It worked perfectly fine.
Hans (commenter), you were right. Thanks. =)
Now, my question would now become how I could easily debug this problem.
The only way I currently know is manually copying the release version of DLL and EXE files to the mobile device and testing it. =(
Does anybody know the better way?
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