Update

Author: G-Moris

Client/core/CConnectManager.cpp

@@ -150,11 +150,14 @@ bool CConnectManager::Connect(const char* szHost, unsigned short usPort, const c
     OpenServerFirewall(m_Address, CServerBrowser::GetSingletonPtr()->FindServerHttpPort(m_strHost, m_usPort), true);
 
     // Display the status box
-    SString strBuffer(_("Connecting to %s:%u ..."), m_strHost.c_str(), m_usPort);
+    std::string formatConnecting;
     if (m_bReconnect)
-        strBuffer = SString(_("Reconnecting to %s:%u ..."), m_strHost.c_str(), m_usPort);
-    CCore::GetSingleton().ShowMessageBox(_("CONNECTING"), strBuffer, MB_BUTTON_CANCEL | MB_ICON_INFO, m_pOnCancelClick);
-    WriteDebugEvent(SString("Connecting to %s:%u ...", m_strHost.c_str(), m_usPort));
+        formatConnecting = mtasa::format(_("Reconnecting to {}:{} ..."), m_strHost, m_usPort);
+    else
+        formatConnecting = mtasa::format(_("Connecting to {}:{} ..."), m_strHost, m_usPort);
+
+    CCore::GetSingleton().ShowMessageBox(_("CONNECTING"), formatConnecting.c_str(), MB_BUTTON_CANCEL | MB_ICON_INFO, m_pOnCancelClick);
+    WriteDebugEvent(std::format("Connecting to {}:{} ...", m_strHost, m_usPort));
 
     return true;
 }

Shared/sdk/SharedUtil.h

@@ -85,3 +85,21 @@
 #define strnicmp strncasecmp
 #endif
 #endif
+
+// Ensure that the C++ version is at least C++20
+#if __cplusplus >= 202002L
+
+/*
+ The function prevents a compilation error caused by using non-constant format strings and
+ correctly forwards the arguments to std::format for formatting
+*/
+namespace mtasa
+{
+    template <class... _Types>
+    __forceinline std::string format(const std::string_view fmt, _Types&&... _Args)
+    {
+        return std::vformat(fmt, std::make_format_args(_Args...));
+    }
+}
+
+#endif