Pinvoke Error

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Pinvoke Signature Does Not Match The Unmanaged Target Signature

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A Call To Pinvoke Function Has Unbalanced The Stack C#

Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each pinvokestackimbalance was detected c# other. Join them; it only takes a minute: Sign up PInvoke error when calling unmanaged (C++) function from C# [duplicate] up vote 1 down vote favorite This question already has an answer here: A call to PInvoke function has unbalanced the stack when including a C DLL into C# 3 answers I have an unmanged C++ dll that visual basic a call to pinvoke function has unbalanced the stack I have written and tested. The unmanged code woks fine when built and run in an unmanged console app. The function declaration is shown below. #ifndef IMPORT_MYLIB # define MYLIB_API __declspec(dllexport) #else # define MYLIB_API __declspec(dllimport) #endif namespace gsod_data_parsing { extern "C" { MYLIB_API int parse_raw_gsod_file_nocb( const char *path, int temp_threshold ); } } I am trying to call this from a managed application. I declare the function in my C# file like this: [DllImport("GSODDLL.dll")] public static extern int parse_raw_gsod_file_nocb( [MarshalAs(UnmanagedType.LPStr)] string path, int temp_threshold ); These functions are then being executed on a couple parallel tasks like shown below: // Start a task - this runs on the background thread... task1 = Task.Factory.StartNew(() => { int t1 = parse_raw_gsod_file_nocb(filePaths[i], this._frostTemp); return (t1 == 0); }, this._tokenSource.Token); It appears to run fine at first but then (I believe when the function has finished executing) I get the following error. A call to PInvoke function 'Database Creator!Database_Creator.Form1::parse_raw_gsod_file_nocb' has unbalanced the stack. This is likely because the managed PInvoke signature does not match

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C# Dllimport

Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just http://stackoverflow.com/questions/15048615/pinvoke-error-when-calling-unmanaged-c-function-from-c-sharp like you, helping each other. Join them; it only takes a minute: Sign up pinvokestackimbalance — how can I fix this or turn it off? up vote 48 down vote favorite 21 I just switched to vs2010 from vs2008. Exact same solution, except now every single call to a C++ dll yields a 'pinvokestackimbalance' exception. This http://stackoverflow.com/questions/3506796/pinvokestackimbalance-how-can-i-fix-this-or-turn-it-off exception does not get fired in 2008. I have complete access to the C++ dll and to the calling application. There does not appear to be any problem with the pinvoke, but this problem is making debugging other problems impossible; the IDE is stopping constantly to tell me about these things. For instance, here's the C# signature: [DllImport("ImageOperations.dll")] static extern void FasterFunction( [MarshalAs(UnmanagedType.LPArray)]ushort[] inImage, //IntPtr inImage, [MarshalAs(UnmanagedType.LPArray)]byte[] outImage, //IntPtr outImage, int inTotalSize, int inWindow, int inLevel); Here's what it looks like on the C++ side: #ifdef OPERATIONS_EXPORTS #define OPERATIONS_API __declspec(dllexport) #else #define OPERATIONS_API __declspec(dllimport) #endif extern "C" { OPERATIONS_API void __cdecl FasterFunction(unsigned short* inArray, unsigned char* outRemappedImage, int inTotalSize, int inWindow, int inLevel); } What's different between vs2010 and vs2008 that would cause these exceptions to get thrown? Should I be adding a different set of parameters to the DllImport directive? c# c++ visual-studio-2010 visual-studio pinvoke share|improve this question edited Aug 21 '13 at 7:56 Ciro Santilli 烏坎事件2016六四事件 法轮功 53.3k10229171 asked Aug 17 '10 at 20:45

Tips/Tricks Top Articles Beginner Articles Technical Blogs Posting/Update Guidelines Article Help Forum Article Competition Submit an article or tip Post your Blog quick answersQ&A Ask a Question View Unanswered Questions View http://www.codeproject.com/Questions/340194/Visual-studio-PInvoke-error All Questions... Linux questions C# questions ASP.NET questions SQL questions fabric questions discussionsforums http://www.mono-project.com/docs/advanced/pinvoke/ All Message Boards... Application Lifecycle> Running a Business Sales / Marketing Collaboration / Beta Testing Work Issues Design and Architecture ASP.NET JavaScript C / C++ / MFC> ATL / WTL / STL Managed C++/CLI C# Free Tools Objective-C and Swift Database Hardware & Devices> System Admin Hosting and Servers Java .NET Framework Android a call iOS Mobile SharePoint Silverlight / WPF Visual Basic Web Development Site Bugs / Suggestions Spam and Abuse Watch features Competitions News The Insider Newsletter The Daily Build Newsletter Newsletter archive Surveys Product Showcase Research Library CodeProject Stuff communitylounge Who's Who Most Valuable Professionals The Lounge   The Insider News The Weird & The Wonderful The Soapbox Press Releases Non-English Language > General Indian Topics General a call to Chinese Topics help What is 'CodeProject'? General FAQ Ask a Question Bugs and Suggestions Article Help Forum Site Map Advertise with us About our Advertising Employment Opportunities About Us Ask a Question All Questions All Unanswered FAQ Visual studio 2010 PInvoke error Rate this: Please Sign up or sign in to vote. See more: VB VB.NET Public Declare Function KeyState Lib "user32" (ByVal vkey As Long) As IntegerI m getting a PInvoke error in Keystate Function in visual studio 2010.how can it be solved.It works on VS2008 but not in VS2010help methanks in advance...I get this error when using GetAsyncKeyState........"A call to PInvoke function 'KeyFrmApp!keyFrmApp.Form1::GetAsyncKeyState' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature." Posted 4-Mar-12 20:01pm TNJS82965 Updated 5-Mar-12 19:49pm v2 Add a Solution Comments SAKryukov 5-Mar-12 2:19am It can be solved if you show appropriate code fragment, including all attribute and usage of the P/Invoked code. Please understand: our access to your hard drive is somewhat limited due to winter conditions. :-) --SA

to make it “easy” to interoperate with existing code. In principle, all you need to do is create a DllImport function declaration for the existing code to invoke, and the runtime will handle the rest. For example: [DllImport ("libc.so")] private static extern int getpid (); Please note that most of the classes and enumerations mentioned in this document reside in the System.Runtime.InteropServices namespace. The above C# function declaration would invoke the POSIX getpid(2) system call on platforms that have the libc.so library. If libc.so exists but doesn’t have the getpid export, an EntryPointNotFoundException exception is thrown. If libc.so can’t be loaded, a DllNotFoundException exception is thrown. Simple. Straightforward. What could be easier? There are three problems with this: Specifying the library in the DllImport statement. Determining what function to actually invoke. Passing parameters; most existing code is far more complex. Strings will need to be passed, structures may need to be passed, memory management practices will become involved… Existing code is a complex beast, and the interop layer needs to support this complexity. Library Handling How does the runtime find the library specified in the DllImport attribute? This question is inherently platform specific. Windows DLL Search Path From the MSDN LoadLibrary documentation, the DLLs needed by the program are searched for in the following order: The directory from which the application loaded. The current directory The system directory. Use the GetSystemDirectory() function to get the path of this directory. The 16-bit system directory. The Windows directory. Use the GetWindowsDirectory() function to get the path of this directory. The directories that are listed in the PATH environment variable. Of course, reality isn’t quite that simple. In practice, the “system” directory is actually %WINDIR%\system32, except on Windows 9x platforms where it’s %WINDIR%\system. The 16-bit system directory is typically %WINDIR%\system, but isn’t recognized as a separate search directory on Windows 9x platfor