SendKeys using JNI

I'm trying to implement a sendKeys method for java for windows. I've never used JNI and my c++ knowledge is very limited.

I believe the following java class is correct, and I have it's matching header file for c++.

I hate asking very open ended questions, but I'm pressed for time by the powers that be.

I'm unsure as to where to go from here. Where is the library to sendKeys for c++? Have I implemented the header file correctly?

I'm using VC++ because it is on hand? Should I use another compiler / something else?

// java
public class SendKeysWin32 {
  static {
    System.loadLibrary("javskw32");
  }
  native static void sendKeys(String keys);
}
 
//c++
// javskw32.cpp : Defines the exported functions for the DLL application.
//
 
#include "SendKeysWin32.h"
#include "jni.h"
 
JNIEXPORT void JNICALL Java_SendKeysWin32_sendKeys
  (JNIEnv *, jclass, jstring)
{
 
}

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