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# [DllExport](https://github.com/3F/DllExport) *.NET DllExport* ``` Copyright (c) 2009-2015 Robert Giesecke Copyright (c) 2016-2018 Denis Kuzmin <entry.reg@gmail.com> :: github.com/3F ``` [](https://ci.appveyor.com/project/3Fs/dllexport/branch/master) [](https://github.com/3F/DllExport/releases/latest) [](https://github.com/3F/DllExport/blob/master/LICENSE) [](https://www.nuget.org/packages/DllExport/) [](https://www.nuget.org/packages/ILAsm/) [](https://github.com/3F/GetNuTool) [](https://github.com/3F/MvsSln) [](https://github.com/3F/Conari) [`DllExport`](https://3f.github.io/DllExport/releases/latest/manager/)` -action Configure` [[?](#how-to-get-dllexport)] > 1:[ ***[Quick start](https://www.youtube.com/watch?v=sBWt-KdQtoc)*** ] 2:[ [Basic examples for C++ and C#](https://www.youtube.com/watch?v=9Hyg3_WE9Ks) ] 3:[ [Complex types and Strings](https://www.youtube.com/watch?v=QXMj9-8XJnY) ] > -> { **[Wiki](https://github.com/3F/DllExport/wiki)** } `~~~---~~~` ```csharp [DllExport("Init", CallingConvention.Cdecl)] public static int entrypoint(IntPtr l) { // ... it will be called from Lua script lua_pushcclosure(l, onProc, 0); lua_setglobal(l, "onKeyDown"); return 0; } ``` * **For work with Unmanaged code/libraries (binding between .NET and unmanaged native C/C++ etc.), see [Conari](https://github.com/3F/Conari)** * If you need convenient work with Lua (5.1, 5.2, 5.3, ...), see [LunaRoad](https://github.com/3F/LunaRoad) ```csharp [DllExport("Init", CallingConvention.Cdecl)] // __cdecl is the default calling convention for our library as and for C and C++ programs [DllExport(CallingConvention.StdCall)] [DllExport("MyFunc")] [DllExport] ``` Support of Modules: Library (**.dll**) and Executable (**.exe**) [[?](https://github.com/3F/DllExport/issues/18)] Where to look ? v1.2+ provides dynamic definitions of namespaces (ddNS feature), thus you can use what you need - details **[here](https://github.com/3F/DllExport/issues/2)** ```cpp Via Cecil or direct modification: 000005B0 00 C4 7B 01 00 00 00 2F 00 12 05 .Д{..../... 000005C0 00 00 02 00 00 00 00 00 00 00 00 00 00 00 26 00 ..............&. 000005D0 20 02 00 00 00 00 00 00 00 49 2E 77 61 6E 74 2E ........I.want. <<<- 000005E0 74 6F 2E 66 6C 79 00 00 00 00 00 00 00 00 00 00 to.fly.......... <<<- ``` [](#) [](https://github.com/3F/DllExport/issues/11#issuecomment-250907940) Our Wizard and embeddable manager: [](https://3f.github.io/DllExport/releases/latest/manager/) [](https://www.youtube.com/watch?v=sBWt-KdQtoc) [](https://github.com/3F/DllExport/issues/55) ---- [Initially](https://github.com/3F/DllExport/issues/3) the original tool `UnmanagedExports` was distributed by Robert Giesecke as an closed-source tool **under the [MIT License](https://opensource.org/licenses/mit-license.php)**: * [Official page](https://sites.google.com/site/robertgiesecke/Home/uploads/unmanagedexports) - *posted Jul 9, 2009 [ updated Dec 19, 2012 ]* * [Official NuGet Packages](https://www.nuget.org/packages/UnmanagedExports) Now, we will be more open ! all details [here](https://github.com/3F/DllExport/issues/3) ## License The [MIT License (MIT)](https://github.com/3F/DllExport/blob/master/LICENSE) ## &_ ### How does it work Current features has been implemented through [ILDasm](https://github.com/3F/coreclr/tree/master/src/ildasm) & [ILAsm](https://github.com/3F/coreclr/tree/master/src/ilasm) that makes the all required steps via `.export` directive ([it's specific directive for ILAsm compiler only](https://github.com/3F/DllExport/issues/45#issuecomment-317802099)). **What inside ? or how does work the .export directive ?** Read about format PE32/PE32+, start with grammar from asmparse and move to writer: ```cpp ... //yacc if(PASM->m_pCurMethod->m_dwExportOrdinal == 0xFFFFFFFF) { PASM->m_pCurMethod->m_dwExportOrdinal = $3; PASM->m_pCurMethod->m_szExportAlias = $6; if(PASM->m_pCurMethod->m_wVTEntry == 0) PASM->m_pCurMethod->m_wVTEntry = 1; if(PASM->m_pCurMethod->m_wVTSlot == 0) PASM->m_pCurMethod->m_wVTSlot = $3 + 0x8000; } ... EATEntry* pEATE = new EATEntry; pEATE->dwOrdinal = pMD->m_dwExportOrdinal; pEATE->szAlias = pMD->m_szExportAlias ? pMD->m_szExportAlias : pMD->m_szName; pEATE->dwStubRVA = EmitExportStub(pGlobalLabel->m_GlobalOffset+dwDelta); m_EATList.PUSH(pEATE); ... // logic of definition of records into EXPORT_DIRECTORY (see details from PE format) HRESULT Assembler::CreateExportDirectory() { ... IMAGE_EXPORT_DIRECTORY exportDirIDD; DWORD exportDirDataSize; BYTE *exportDirData; EATEntry *pEATE; unsigned i, L, ordBase = 0xFFFFFFFF, Ldllname; ... ~ now we're ready to miracles ~ ``` Read also my explanations from here: [about mscoree](https://github.com/3F/DllExport/issues/45#issuecomment-317802099); [DllMain & the export-table](https://github.com/3F/DllExport/issues/5#issuecomment-240697109); [DllExport.dll](https://github.com/3F/DllExport/issues/28#issuecomment-281957212); [.exp & .lib](https://github.com/3F/DllExport/issues/9#issuecomment-246189220); [ordinals](https://github.com/3F/DllExport/issues/8#issuecomment-245228065) ... ### How to get DllExport **v1.6+** have no official support of any standard NuGet clients. [[?](https://github.com/3F/DllExport/wiki/DllExport-Manager-Q-A)] * [New Wizard and embeddable manager](https://www.youtube.com/watch?v=sBWt-KdQtoc) * Wiki. [Quick start](https://github.com/3F/DllExport/wiki/Quick-start) Get [DllExport.bat](https://3F.github.io/DllExport/releases/latest/manager/) from any place. For example, you can still get it from packages via NuGet server ([how to](https://youtu.be/okPThdWDZMM?t=1m1s)) or it also can be embedded inside any other your scripts/project files/etc. *DllExport.bat was based on [GetNuTool core](https://github.com/3F/GetNuTool) that's Cross-Platform Embeddable Package Manager that requires only MSBuild. Finally it just aggregates calling to Wizard that was based on [MvsSln](https://github.com/3F/MvsSln). [[?](https://github.com/3F/DllExport/wiki/DllExport-Manager-Q-A#is-this-cross-platform-solution-)]* **Please note**: You do not need to call manually DllExport.bat after initial configuration. It will be **automatically** restored by any Build operation for your configured projects. * To install/uninstall or to reconfigure your projects: ``` DllExport -action Configure ``` [Please read the documentation.](https://github.com/3F/DllExport/wiki/DllExport-Manager) Other variants: * `gnt /p:ngpackages="DllExport"` [[?](https://github.com/3F/GetNuTool)] * [GetNuTool](https://github.com/3F/