c# - Calling .NET dll from native C++ -


i have problem calling .net dll (mclnet.dll) using com wrapper. third part dll not have source code of. want use mclnet.dll in pure native c++ application, developing c# wrapper. mclwrapper.dll, makes methods in mclnet.dll visible. here did:

  • in mclwrapper.dll, added mclnet.dll reference, define interface make mclnet.dll methods visible. here of code: 

    using system;             using system.collections.generic;             using system.linq;             using system.text;            using mclnet;         namespace mclwrapper        {                  public interface mclcontrol                  {                           void mclconnect(string serialnumber);                           void mclset_switch(string switchname, int val);                           void mcldisconnect();               };       public class mclcontrolclass:mclcontrol      {          private usb_rf_switchbox _sb = new usb_rf_switchbox();           public void mclconnect(string serialnumber)          {                          _sb.connect(ref serialnumber);          }           public void mclset_switch(string switchname, int val)          {              _sb.set_switch(ref switchname, ref val);          }           public void mcldisconnect()          {              _sb.disconnect();          }      }  }

and assemblyinfor.cs mclwrapper.dll:

using system.reflection; using system.runtime.compilerservices; using system.runtime.interopservices;  // general information assembly controlled through following  // set of attributes. change these attribute values modify information // associated assembly. [assembly: assemblytitle("mclwrapper")] [assembly: assemblydescription("")] [assembly: assemblyconfiguration("")] [assembly: assemblycompany("")] [assembly: assemblyproduct("mclwrapper")] [assembly: assemblycopyright("copyright ©  2013")] [assembly: assemblytrademark("")] [assembly: assemblyculture("")] //[assembly: assemblykeyfile("..\\mclwrapper.snk")]   // setting comvisible false makes types in assembly not visible  // com components.  if need access type in assembly  // com, set comvisible attribute true on type. [assembly: comvisible(true)]  // following guid id of typelib if project exposed com [assembly: guid("14fa8796-ee52-4e39-8481-f893ad92bb68")]  // version information assembly consists of following 4 values: // //      major version //      minor version  //      build number //      revision // // can specify values or can default build , revision numbers  // using '*' shown below: // [assembly: assemblyversion("1.0.*")] [assembly: assemblyversion("1.0.0.0")] [assembly: assemblyfileversion("1.0.0.0")]

  • then after built wrapper.dll, registered using regasm command, generate .tlb file

  • then in native c++ application, imported tlb file, , tried use wrapper.dll referred net.dll. here code in native c++ application: 

    #include "stdafx.h" #include "math.h" #include "detectorswitch.h" #include "detectorswitchsetupxml.h" #include "oleauto.h"  #import "c:/mypath/mclwrapper.tlb" raw_interfaces_only     wchar_t message[256]; using namespace mclwrapper;  long detectorswitch::finddevices(long &devicecount) {     long ret = true;      devicecount=0;         hresult hcoinitialize = coinitialize(null);      mclcontrolptr myswitch(__uuidof(mclcontrolclass));      hresult hconnet = myswitch->mclconnect(_sn);    // connect sc      short output  = 1;     myswitch->mclset_switch(&_a,&output);  }

now problem is, not recognize myswitch->mclset_switch(&_a,&output) function, means, mclnet.dll not exposed native c++ code yet.

i wondering problem here? how can chance correct it? how can call .net dll in native c++ application? many front.

#import <mscorlib.tlb> raw_interfaces_only #import c:/mypath/mclwrapper.tlb" no_namespace named_guids

try above mentioned import statements - works me , call .net code without namespaces native c++.


Comments

Post a Comment

Popular posts from this blog

jquery - How can I dynamically add a browser tab? -

since using iframes house external pages are, accounts "not preferred method" , disallowed sites (flickr, one), want dynamically generate browser tabs. e.g., when user submits form, want dynamically generate tab on browser in response submitted. e.g., might want add new tab url like: http://www.bigsurgarrapata.com/contact how in jquery? you want form target attribute action attribute. http://www.w3schools.com/tags/att_form_target.asp browsers have ultimate control on result of target attribute open new tab value of _blank. <form action="contact_submit.php" target="_blank" method="post">
Read more

keyboard - C++ GetAsyncKeyState alternative -

i using windows.h library's getasynckeystate function define key pushed on keyboard . here program returns int value of pushed key example. #include <iostream> #include <windows.h> using namespace std; int main (){ char i; for(i=8;i<190;i++){ if(getasynckeystate(i)== -32767){ cout<<int (i)<<endl; } } return 0; } but trying make opengl simple game , function appeared slow . there function not need cycle 180 times , if statement . thanks you're trying make opengl game, you're going use glfw. if that's case can away using glfwgetkey() such: if (glfwgetkey(glfw_key_up) == glfw_press) {...} if (glfwgetkey(glfw_key_down) == glfw_press) {...} that method nicely explained in tutorial 6 opengl-tutorial.org . should start first tutorial of beginners tutorials , later intermediate tutorials . if you're going make win32 window can listen wm_keydown or wm_keyup messages , virtua
Read more

android - java.net.UnknownHostException(Unable to resolve host “URL”: No address associated with hostname) -

i developing app testing asp.net webservice in android.for simple webservice adding 2 numbers used.where numbers passed parameters.the result in dialogue.the webserver works in local. when application runs following result exception.i provided internet permission in manifest. java.net.unknownhostexception(unable resolve host “ http://url.com/ ”: no address associated hostname) my code given below main activity public static string rslt=""; /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); button b1=(button)findviewbyid(r.id.button1); final alertdialog ad=new alertdialog.builder(this).create(); b1.setonclicklistener(new onclicklistener() { @override public void onclick(view arg0) { // todo auto-generated method stub try {
Read more