How to check if .net file load in cad using arx

[lot231]

* Procedure
1. Run AutoCAD.
2. Load the .net file using arx.

CString Dll_Path = _T("(command \"netload\"\"") + Dll_Path + _T("\")") + _T("(princ)");
ads_queueexpr(Dll_Path);

3. Load another arx. (ZD_File.dll)
-. arx code:

HANDLE zd_fileLoad;
zd_fileLoad = GetModuleHandle(L"ZD_File");
acutPrintf(L"\nhandle : %x\n", zd_fileLoad);
if (!zd_fileLoad) acutPrintf(L"\nZD_File.dll Fail\n");
else acutPrintf(L"\nhandle : %x\n", zd_fileLoad);

* Result
handle : 0
ZD_File.dll Fail

* Expected results
handle : xxxx (must have a handle value)

[Alexander.Rivilis]

In order to load dll-file in AutoCAD you can use another method:

zd_fileLoad = LoadLibraryW(L"ZD_File.dll");

[lot231]

I'm trying to check for a .net dll file that is already loaded.

zd_fileLoad = LoadLibraryW(L"ZD_File.dll");

The code above seems to be a function that loads a dll file.

[Alexander.Rivilis]

HANDLE zd_fileLoad = GetModuleHandle(L"ZD_File");
if (zd_fileLoad == NULL) 
{
  zd_fileLoad = LoadLibraryW(L"ZD_File.dll");
}

What about such code?

[Alexander.Rivilis · Accepted solution]

By the way in order to load .NET dll-file in AutoCAD you can use function:

Acad::ErrorStatus __cdecl LoadManagedDll(ACHAR const *dllpath);

It is the same as _NETLOAD command. You have to link with acdbmgd.lib

Also undocumented function can help you check loaded or no .NET dll-file:

bool __cdecl ExtensionLoader_IsLoaded(ACHAR const * dllpath);

[lot231]

Thanks~~~

bool __cdecl ExtensionLoader_IsLoaded ( ACHAR const  * dllpath ) ;

Because of this function, I was able to check whether the dll file was preloaded.
Is this function using the process function?

[Alexander.Rivilis]

---

@lot231 wrote:

Is this function using the process function?

---

I did not understood this question. And as far as this function undocumented  I can not say algorithm of this function.

[lot231]

bool __cdecl ExtensionLoader_IsLoaded(ACHAR const * dllpath);

This function doesn't seem to work for autocad2023 only. Please check. (2021~2022 Fine)