try using pipe

src/client_frontend_guilite/connect.cpp

@@ -0,0 +1,64 @@
+#pragma warning(disable:4996)
+#ifndef CONNECT_CPP
+#define CONNECT_CPP
+#include <Windows.h>
+#include <string>
+#include <fstream>
+#include "../client_backend/well_known.h"
+int send_to_pipe(const std::string& message) {
+    HANDLE hPipe;
+    DWORD dwWritten;
+    std::ofstream (MAIN_COM_PATH);//enshure the file exists
+    hPipe = CreateFile(TEXT(MAIN_COM_PATH),
+        GENERIC_WRITE,
+        0,
+        NULL,
+        OPEN_EXISTING,
+        0,
+        NULL);
+
+    if (hPipe != INVALID_HANDLE_VALUE) {
+        if (WriteFile(hPipe,
+            message.c_str(),
+            static_cast<DWORD>(message.size()), // Size of the message
+            &dwWritten,
+            NULL)) {
+            CloseHandle(hPipe);
+            return 0; // Success
+        }
+        else {
+            // Failed to write to pipe
+            CloseHandle(hPipe);
+            return 2; // Error writing to pipe
+        }
+    }
+    else {
+        // Failed to open pipe
+        DWORD dwError = GetLastError();
+        return dwError; // Return the error code
+    }
+}
+std::string read_from_pipe() {
+    HANDLE hPipe;
+    DWORD dwRead;
+    DWORD dwWritten;
+    char buffer[1000];
+    hPipe = CreateFile(TEXT(MAIN_COM_PATH),
+        GENERIC_READ | GENERIC_WRITE,
+        0,
+        NULL,
+        OPEN_EXISTING,
+        0,
+        NULL);
+    if (hPipe != INVALID_HANDLE_VALUE)
+    {
+        ReadFile(hPipe, buffer, sizeof(buffer), &dwRead, NULL);
+        CloseHandle(hPipe);
+        buffer[strlen(buffer) + 1] = '\0';
+        return std::string(buffer);
+    }
+    else {
+        return "Error";
+    }
+}
+#endif