Hi!
I’m trying to use the Bing Speech API in my Project. They have some examples using REST-API here: GitHub - Azure-Samples/SpeechToText-REST: REST Samples of Speech To Text API
Because there are only examples using C#, curl and java I thought about creating a C# dll and calling the functions from C++. I would prefer to use C++ only, but I really don’t know how to
do these HTTP requests in C++…
Can you guys help me? Or maybe suggest a better way to do this?
I created a C# dll with UnmanagedExports:
namespace SpeechRecognition
{
public class Class1
{
[DllExport("TestFunction", CallingConvention = CallingConvention.StdCall)]
static public void TestFunction()
{
}
[DllExport("Calc", CallingConvention = CallingConvention.StdCall)]
static string Calc(int a)
{
return a.ToString();
}
}
}
And then I tried to call “Calc” from C++:
typedef const char*(*_Calc) (int a);
FString filePath = FPaths::Combine(*FPaths::ProjectPluginsDir(), TEXT("VoiceRecognition.dll"));
void *DLLHandle = NULL;
if(FPaths::FileExists(filePath))
{
DLLHandle = FPlatformProcess::GetDllHandle(*filePath);
}
if(DLLHandle != NULL)
{
_Calc DLLFuncPtr = NULL;
FString procName = "Calc";
DLLFuncPtr = (_Calc)FPlatformProcess::GetDllExport(DLLHandle, *procName);
if(DLLFuncPtr != NULL)
{
const char* result = DLLFuncPtr(2);
}
}
But the DLLFuncPtr always returns null. I don’t know why. Also when I export the DLL and open it with a DLL Viewer, I can’t see any functions? Am I doing something wrong?
