port: UserInterface.cpp entry unit — ApplicationSetErrorString/StringTable_Initialize verbatim, Main ADAPTED to PythonBoot, Win32 entry N_A

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/platform/ScriptLib/PythonBoot.cpp

@@ -46,6 +46,7 @@
 #include "UserInterface/PythonApplication.h"
 #include "EterBase/Timer.h"
 #include "PythonBoot.h"
+#include "../UserInterface/UserInterface.h"
 #include "PythonHost.h"
 #include "../EterLib/UIRenderCommands.h"
 #include "../EterBase/LogBox.h"
@@ -714,6 +715,8 @@ bool Start(const char* stdlib_path, std::string* error)
 		});
 	#endif
 
+	// 40250 WinMain (UserInterface.cpp:524): ApplicationStringTable_Initialize(hInstance) before locale.cfg.
+	ApplicationStringTable_Initialize(NULL);
 	// 40250 Main (UserInterface.cpp:410): if (LocaleService_LoadGlobal(hInstance)) SetDefaultCodePage(...).
 	std::string locale_config = "locale.cfg";
 	if (const char* client = std::getenv("MT_40250_CLIENT"))

src/platform/UserInterface/UserInterface.cpp

@@ -14,6 +14,7 @@
 #include "MilesLib/SoundData.h"
 #include "UserInterface.h"
 
+#include <cstring>
 #include <map>
 #include <string>
 
@@ -26,6 +27,15 @@
 // 40250 UserInterface.cpp:49.
 bool __IS_TEST_SERVER_MODE__=false;
 
+// 40250 UserInterface.cpp:73. WinMain shows the text in a message box after Main returns; here it stays readable
+// for the host.
+char gs_szErrorString[512] = "";
+
+void ApplicationSetErrorString(const char* szErrorString)
+{
+	strcpy(gs_szErrorString, szErrorString);
+}
+
 // 40250 UserInterface.cpp:98. PORT: LoadString reads the executable's STRINGTABLE; the one the supplied English
 // client resolves is UserInterface.rc's LANG_ENGLISH, SUBLANG_ENGLISH_US section (ids from resource.h).
 namespace
@@ -45,12 +55,22 @@ const char* LoadAppString(DWORD dwID)
 	return "";
 }
 
-std::map<DWORD, std::string> gs_kMap_dwID_stLocale;
 } // namespace
 
+struct ApplicationStringTable 
+{
+	HINSTANCE m_hInstance;
+	std::map<DWORD, std::string> m_kMap_dwID_stLocale;
+} gs_kAppStrTable;
+
+void ApplicationStringTable_Initialize(HINSTANCE hInstance)
+{
+	gs_kAppStrTable.m_hInstance=hInstance;
+}
+
 const std::string& ApplicationStringTable_GetString(DWORD dwID)
 {
-	std::string& rstLocale=gs_kMap_dwID_stLocale[dwID];
+	std::string& rstLocale=gs_kAppStrTable.m_kMap_dwID_stLocale[dwID];
 	rstLocale=LoadAppString(dwID);
 
 	return rstLocale;

src/platform/UserInterface/UserInterface.h

@@ -10,3 +10,10 @@ bool PackInitialize(const char * c_pszFolder);
 // The two function-static singletons 40250 Main() creates before PackInitialize("pack")
 // (`static CLZO lzo; static CEterPackManager EterPackManager;`), created on first use and alive until exit.
 void PackSingletons();
+
+// 40250: ApplicationStringTable_Initialize (WinMain, before LocaleService_LoadConfig). LoadString has no module
+// here, so the handle is only stored.
+void ApplicationStringTable_Initialize(HINSTANCE hInstance);
+
+// gs_szErrorString (40250 UserInterface.cpp:73), set by ApplicationSetErrorString (UserInterface/StdAfx.h); WinMain shows it after Main.
+extern char gs_szErrorString[512];