diff -r 80bdedb243d7 -r b349c302413c pidgin/win32/winpidgin.c
--- a/pidgin/win32/winpidgin.c	Sat Nov 23 19:39:07 2024 -0600
+++ b/pidgin/win32/winpidgin.c	Sat Nov 23 19:42:35 2024 -0600
@@ -50,7 +50,7 @@
 # define PIDGIN_WIN32_UNUSED
 #endif
 
-typedef int (__cdecl* LPFNPIDGINMAIN)(HINSTANCE, int, char**);
+typedef int (__cdecl* LPFNPIDGINMAIN)(int, char**);
 typedef BOOL (WINAPI* LPFNSETDLLDIRECTORY)(LPCWSTR);
 typedef BOOL (WINAPI* LPFNATTACHCONSOLE)(DWORD);
 typedef BOOL (WINAPI* LPFNSETPROCESSDEPPOLICY)(DWORD);
@@ -72,90 +72,8 @@
 	return err_msg;
 }
 
-#define PIDGIN_WM_PROTOCOL_HANDLE (WM_APP + 14)
-
-#define PROTO_HANDLER_SWITCH L"--protocolhandler="
-
-static void handle_protocol(wchar_t *cmd) {
-	char *remote_msg, *utf8msg;
-	wchar_t *tmp1, *tmp2;
-	int len, wlen;
-	SIZE_T len_written;
-	HWND msg_win;
-	DWORD pid;
-	HANDLE process;
-
-	/* The start of the message */
-	tmp1 = cmd + wcslen(PROTO_HANDLER_SWITCH);
-
-	/* The end of the message */
-	if ((tmp2 = wcschr(tmp1, L' ')))
-		wlen = (tmp2 - tmp1);
-	else
-		wlen = wcslen(tmp1);
-
-	if (wlen == 0) {
-		wprintf(L"No protocol message specified.\n");
-		return;
-	}
-
-	if (!(msg_win = FindWindowExW(NULL, NULL, L"WinpidginMsgWinCls", NULL))) {
-		wprintf(L"Unable to find an instance of Pidgin to handle protocol message.\n");
-		return;
-	}
-
-	len = WideCharToMultiByte(CP_UTF8, 0, tmp1,
-			wlen, NULL, 0, NULL, NULL);
-	if (len) {
-		utf8msg = malloc(len);
-		len = WideCharToMultiByte(CP_UTF8, 0, tmp1,
-			wlen, utf8msg, len, NULL, NULL);
-	}
-
-	if (len == 0) {
-		wprintf(L"No protocol message specified.\n");
-		return;
-	}
-
-	GetWindowThreadProcessId(msg_win, &pid);
-	if (!(process = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_WRITE, FALSE, pid))) {
-		DWORD dw = GetLastError();
-		const wchar_t *err_msg = get_win32_error_message(dw);
-		wprintf(L"Unable to open Pidgin process. (%u) %ls\n",
-				(UINT)dw, err_msg);
-		return;
-	}
-
-	wprintf(L"Trying to handle protocol message:\n'%.*ls'\n", wlen, tmp1);
-
-	/* MEM_COMMIT initializes the memory to zero
-	 * so we don't need to worry that our section of utf8msg isn't nul-terminated */
-	if ((remote_msg = (char*) VirtualAllocEx(process, NULL, len + 1, MEM_COMMIT, PAGE_READWRITE))) {
-		if (WriteProcessMemory(process, remote_msg, utf8msg, len, &len_written)) {
-			if (!SendMessageA(msg_win, PIDGIN_WM_PROTOCOL_HANDLE, len_written, (LPARAM) remote_msg))
-				printf("Unable to send protocol message to Pidgin instance.\n");
-		} else {
-			DWORD dw = GetLastError();
-			const wchar_t *err_msg = get_win32_error_message(dw);
-			wprintf(L"Unable to write to remote memory. (%u) %ls\n",
-				       (UINT)dw, err_msg);
-		}
-
-		VirtualFreeEx(process, remote_msg, 0, MEM_RELEASE);
-	} else {
-		DWORD dw = GetLastError();
-		const wchar_t *err_msg = get_win32_error_message(dw);
-		wprintf(L"Unable to allocate remote memory. (%u) %ls\n",
-				(UINT)dw, err_msg);
-	}
-
-	CloseHandle(process);
-	free(utf8msg);
-}
-
-
 int __stdcall
-WinMain(struct HINSTANCE__ *hInstance,
+WinMain(PIDGIN_WIN32_UNUSED struct HINSTANCE__ *hInstance,
         PIDGIN_WIN32_UNUSED struct HINSTANCE__ *hPrevInstance,
         PIDGIN_WIN32_UNUSED char *lpszCmdLine,
         PIDGIN_WIN32_UNUSED int nCmdShow)
@@ -165,11 +83,10 @@
 	wchar_t *pidgin_dir_start = NULL;
 	wchar_t exe_name[MAX_PATH];
 	HMODULE hmod;
-	wchar_t *wtmp;
 	int pidgin_argc;
 	char **pidgin_argv; /* This is in utf-8 */
 	int i, j, k;
-	BOOL debug = FALSE, help = FALSE, version = FALSE, multiple = FALSE, success;
+	BOOL debug = FALSE, help = FALSE, version = FALSE, success;
 	LPWSTR *szArglist;
 	LPWSTR cmdLine;
 
@@ -184,8 +101,6 @@
 					help = TRUE;
 				else if (strstr(__argv[i], "--version") == __argv[i])
 					version = TRUE;
-				else if (strstr(__argv[i], "--multiple") == __argv[i])
-					multiple = TRUE;
 			} else {
 				if (strchr(__argv[i], 'd'))
 					debug = TRUE;
@@ -193,8 +108,6 @@
 					help = TRUE;
 				if (strchr(__argv[i], 'v'))
 					version = TRUE;
-				if (strchr(__argv[i], 'm'))
-					multiple = TRUE;
 			}
 		}
 	}
@@ -225,12 +138,6 @@
 
 	cmdLine = GetCommandLineW();
 
-	/* If this is a protocol handler invocation, deal with it accordingly */
-	if ((wtmp = wcsstr(cmdLine, PROTO_HANDLER_SWITCH)) != NULL) {
-		handle_protocol(wtmp);
-		return 0;
-	}
-
 	/* Load exception handler if we have it */
 	if (GetModuleFileNameW(NULL, pidgin_dir, MAX_PATH) != 0) {
 
@@ -389,6 +296,5 @@
 	}
 	LocalFree(szArglist);
 
-
-	return pidgin_main(hInstance, pidgin_argc, pidgin_argv);
+	return pidgin_main(pidgin_argc, pidgin_argv);
 }