problem with DLLs

C:
ShellExecute(NULL,L"open",L"D:\\CSharpConsoleApp1.exe",NULL, NULL,SW_SHOWDEFAULT);

//Run CSharpConsoleApp1.exe.

thanks Luptator

this is my whole c++ project-only one function:

ExpertSample.CPP :

#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers

#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <shellapi.h>

#define MT4_EXPFUNC __declspec(dllexport)
//+------------------------------------------------------------------+
BOOL APIENTRY DllMain(HANDLE hModule,DWORD ul_reason_for_call,LPVOID lpReserved)
{
//----
switch(ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
//----
return(TRUE);
}
//+------------------------------------------------------------------+
MT4_EXPFUNC void __stdcall T1()
{
ShellExecute(NULL,"open", "D:\\CSharpConsoleApp1.exe",NULL, NULL,SW_SHOWDEFAULT);
return;
}
//+------------------------------------------------------------------+

and ExpertSample.def:

LIBRARY ExpertSample

EXPORTS T1

and at the end I receive this error:

--------------------Configuration: ExpertSample - Win32 Debug--------------------
Compiling...
ExpertSample.cpp
d:\forex\n2\experts\indicators\expertsample.cpp(30) : warning C4129: 'F' : unrecognized character escape sequence
Linking...
Creating library Debug/ExpertSample.lib and object Debug/ExpertSample. exp
ExpertSample.obj : error LNK2001: unresolved external symbol __imp__ShellExecuteA@24
Debug/ExpertSample.dll : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

ExpertSample.dll - 2 error(s), 1 warning(s)

could you please give more help?

Try:
#pragma comment (lib,"shell32.lib")
From MSDN:
"

Code references something (such as a function, variable, or label) that the linker can't find in the libraries and object files.

This error message is followed by fatal error LNK1120.

The project is missing a reference to a library (.LIB) or object (.OBJ) file.

"

thanks.

now it compiles and Links but doesn't execute:

#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <shellapi.h>
//----
#define MT4_EXPFUNC __declspec(dllexport)
#pragma comment (lib,"shell32.lib")
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
BOOL APIENTRY DllMain(HANDLE hModule,DWORD ul_reason_for_call,LPVOID lpReserved)
{
//----
switch(ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
//----
return(TRUE);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
MT4_EXPFUNC void __stdcall T1()
{
ShellExecute(NULL,"open","C:\\Windows\\notepad.exe",NULL,NULL, SW_SHOWDEFAULT);
return;
}
//+------------------------------------------------------------------+
MT4_EXPFUNC int __stdcall T2()
{
return(1);
}

def file:

LIBRARY ExpertSample

EXPORTS

T1
T2

and an indicator using this dll:

#property indicator_chart_window
 
#import "D:\Forex\N2\experts\indicators\ExpertSample.dll"
void    T1();
int     T2();
#import
 
int init()
{
  Alert(T2());
  T1();
  return(0);
}
int deinit()
  {
   return(0);
  }
int start()
  {
   int    counted_bars=IndicatorCounted();
//----
   
//----
   return(0);
  }

could you please help?

See Journal for errors.
Copy ExpertSample.dll to \experts\libraries\
MQL4 code:

#import "ExpertSample.dll"
void    T1();
int     T2();
#import

I did all of them:

program works well because alert(T2()) wroks as it should do.

there is no errors in journal

and I copied DLL to Libraries dir

but program doesn't work?

do you have any new Idea?