TeraTermProject · m-tmatma · Jun 2, 2026 · Jun 4, 2026 · Jun 4, 2026 · Jun 4, 2026
diff --git a/TTProxy/ProxyWSockHook.h b/TTProxy/ProxyWSockHook.h
@@ -471,7 +471,7 @@ class ProxyWSockHook {
         in_addr addr;
         struct in6_addr addr6;
         char* buffer;
-        DWORD time;
+        ULONGLONG time;
         ConnectionInfo(ProxyInfo& proxy, String realhost):proxy(proxy), realhost(realhost), buffer(NULL) {
         }
         ~ConnectionInfo() {
@@ -664,7 +664,7 @@ class ProxyWSockHook {
             ConnectionInfo* info = table.get(url);
             ::LeaveCriticalSection(&section);
             if (info != NULL) {
-                info->time = ::GetTickCount();
+                info->time = ::GetTickCount64();
                 return info;
             }
             ProxyInfo proxy;
@@ -688,8 +688,8 @@ class ProxyWSockHook {
                 }
             }
             if (i >= countof(list)) {
-                DWORD now = ::GetTickCount();
-                DWORD max = 0;
+                ULONGLONG now = ::GetTickCount64();
+                ULONGLONG max = 0;
                 int index = -1;
                 for (i = 0; i < countof(list); i++) {
                     if (list[i] != NULL) {
@@ -709,7 +709,7 @@ class ProxyWSockHook {
             info->addr6.s6_addr[11] = 0xff;
             info->addr6.s6_addr[15] = i + 1;
 
-            info->time = ::GetTickCount();
+            info->time = ::GetTickCount64();
             return info;
         }
     };

diff --git a/doc/en/html/macro/command/uptime64.html b/doc/en/html/macro/command/uptime64.html
@@ -0,0 +1,69 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
+  "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+  <title>uptime64</title>
+  <meta http-equiv="Content-Style-Type" content="text/css">
+  <link rel="stylesheet" href="../../style.css" type="text/css">
+</head>
+
+<body>
+
+
+<h1>uptime64</h1>
+
+<p>
+Gets System Up Time. <em>(version 5.7.0 or later)</em>
+</p>
+
+<pre class="macro-syntax">
+int64 &lt;var&gt;
+uptime64 &lt;var&gt;
+</pre>
+
+<h2>Remarks</h2>
+
+<p>
+Retrieves the number of milliseconds that have elapsed since the Windows OS was started,
+and then stores the value into the &lt;int64var&gt; variable.
+</p>
+
+<p>
+The time is valid after the system is run continuously for 49.7 days.
+</p>
+
+
+<h2>Example</h2>
+
+<pre class="macro-example">
+; How to get the uptime in Windows
+int64 var
+uptime64 var
+day = var / 86400000
+var = var % 86400000
+hour = var / 3600000
+var = var % 3600000
+min = var / 60000
+var = var % 60000
+sec = var / 1000
+
+sprintf2 str "System Up Time: %d Days, %d Hours, %d Minutes, %d Seconds" day hour min sec
+messagebox str "uptime"
+</pre>
+
+<pre class="macro-example">
+int64 varstart
+int64 varend
+uptime64 varstart
+
+; do something...
+
+uptime64 varend
+diff = varend - varstart
+sprintf2 str "MACRO running time: %d msec" diff
+messagebox str "running time"
+</pre>
+
+</body>
+</html>
diff --git a/doc/en/teraterm.hhc b/doc/en/teraterm.hhc
@@ -1991,6 +1991,11 @@
 					<param name="Local" value="html\macro\command\uptime.html">
 					<param name="ImageNumber" value="11">
 					</OBJECT>
+				<LI> <OBJECT type="text/sitemap">
+					<param name="Name" value="uptime64">
+					<param name="Local" value="html\macro\command\uptime64.html">
+					<param name="ImageNumber" value="11">
+					</OBJECT>
 				<LI> <OBJECT type="text/sitemap">
 					<param name="Name" value="var2clipb">
 					<param name="Local" value="html\macro\command\var2clipb.html">

diff --git a/doc/en/teraterm.hhp b/doc/en/teraterm.hhp
@@ -395,6 +395,7 @@ HlpMacroCommandToupper=html\macro\command\toupper.html
 HlpMacroCommandUnlink=html\macro\command\unlink.html
 HlpMacroCommandUntil=html\macro\command\until.html
 HlpMacroCommandUptime=html\macro\command\uptime.html
+HlpMacroCommandUptime64=html\macro\command\uptime64.html
 HlpMacroCommandVar2clipb=html\macro\command\var2clipb.html
 HlpMacroCommandWait=html\macro\command\wait.html
 HlpMacroCommandWait4all=html\macro\command\wait4all.html

diff --git a/doc/ja/html/macro/command/uptime64.html b/doc/ja/html/macro/command/uptime64.html
@@ -0,0 +1,68 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
+  "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+  <meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS">
+  <title>uptime64</title>
+  <meta http-equiv="Content-Style-Type" content="text/css">
+  <link rel="stylesheet" href="../../style.css" type="text/css">
+</head>
+
+<body>
+
+
+<h1>uptime64</h1>
+
+<p>
+OSの稼働時間を取得する。<em>(バージョン5.7.0以降)</em>
+</p>
+
+<pre class="macro-syntax">
+int64 &lt;var&gt;
+uptime64 &lt;var&gt;
+</pre>
+
+<h2>解説</h2>
+
+<p>
+Windows OSの稼働時間（ミリ秒）を &lt;int64var&gt; に格納する。
+</p>
+
+<p>
+※稼働時間が49日を経過しても有効
+</p>
+
+
+<h2>例</h2>
+
+<pre class="macro-example">
+; How to get the uptime in Windows
+int64 var
+uptime64 var
+day = var / 86400000
+var = var % 86400000
+hour = var / 3600000
+var = var % 3600000
+min = var / 60000
+var = var % 60000
+sec = var / 1000
+
+sprintf2 str "System Up Time: %d Days, %d Hours, %d Minutes, %d Seconds" day hour min sec
+messagebox str "uptime"
+</pre>
+
+<pre class="macro-example">
+int64 varstart
+int64 varend
+uptime64 varstart
+
+; do something...
+
+uptime64 varend
+diff = varend - varstart
+sprintf2 str "MACRO running time: %d msec" diff
+messagebox str "running time"
+</pre>
+
+</body>
+</html>
diff --git a/doc/ja/teraterm.hhc b/doc/ja/teraterm.hhc
@@ -2014,6 +2014,11 @@
 					<param name="Local" value="html\macro\command\uptime.html">
 					<param name="ImageNumber" value="11">
 					</OBJECT>
+				<LI> <OBJECT type="text/sitemap">
+					<param name="Name" value="uptime64">
+					<param name="Local" value="html\macro\command\uptime64.html">
+					<param name="ImageNumber" value="11">
+					</OBJECT>
 				<LI> <OBJECT type="text/sitemap">
 					<param name="Name" value="var2clipb">
 					<param name="Local" value="html\macro\command\var2clipb.html">

diff --git a/doc/ja/teraterm.hhp b/doc/ja/teraterm.hhp
@@ -401,6 +401,7 @@ HlpMacroCommandToupper=html\macro\command\toupper.html
 HlpMacroCommandUnlink=html\macro\command\unlink.html
 HlpMacroCommandUntil=html\macro\command\until.html
 HlpMacroCommandUptime=html\macro\command\uptime.html
+HlpMacroCommandUptime64=html\macro\command\uptime64.html
 HlpMacroCommandVar2clipb=html\macro\command\var2clipb.html
 HlpMacroCommandWait=html\macro\command\wait.html
 HlpMacroCommandWait4all=html\macro\command\wait4all.html

diff --git a/teraterm/common/compat_win.cpp b/teraterm/common/compat_win.cpp
@@ -239,7 +239,7 @@ static HWND WINAPI GetConsoleWindowLocal(void)
 	}
 
 	// Format a "unique" NewWindowTitle.
-	wsprintfA(pszNewWindowTitle, "%d/%d", GetTickCount(), GetCurrentProcessId());
+	wsprintfA(pszNewWindowTitle, "%I64u/%d", GetTickCount64(), GetCurrentProcessId());
 
 	// Change current window title.
 	SetConsoleTitleA(pszNewWindowTitle);

diff --git a/teraterm/common/dlglib.c b/teraterm/common/dlglib.c
@@ -153,13 +153,14 @@ void SetDlgPercent(HWND HDlg, int id_Item, int id_Progress, LONG a, LONG b, int
 	}
 }
 
-void SetDlgTime(HWND HDlg, int id_Item, DWORD stime, int bytes)
+void SetDlgTime(HWND HDlg, int id_Item, ULONGLONG stime, int bytes)
 {
-	static int prev_elapsed;
-	int elapsed, rate;
+	static ULONGLONG prev_elapsed;
+	ULONGLONG elapsed;
+	int rate;
 	wchar_t buff[64];
 
-	elapsed = (GetTickCount() - stime) / 1000;
+	elapsed = (GetTickCount64() - stime) / 1000;
 
 	if (elapsed == 0) {
 		prev_elapsed = 0;
@@ -172,15 +173,15 @@ void SetDlgTime(HWND HDlg, int id_Item, DWORD stime, int bytes)
 	}
 	prev_elapsed = elapsed;
 
-	rate = bytes / elapsed;
+	rate = (int)(bytes / elapsed);
 	if (rate < 1200) {
-		_snwprintf_s(buff, _countof(buff), _TRUNCATE, L"%d:%02d (%dBytes/s)", elapsed / 60, elapsed % 60, rate);
+		_snwprintf_s(buff, _countof(buff), _TRUNCATE, L"%llu:%02llu (%dBytes/s)", elapsed / 60, elapsed % 60, rate);
 	}
 	else if (rate < 1200000) {
-		_snwprintf_s(buff, _countof(buff), _TRUNCATE, L"%d:%02d (%d.%02dKB/s)", elapsed / 60, elapsed % 60, rate / 1000, rate / 10 % 100);
+		_snwprintf_s(buff, _countof(buff), _TRUNCATE, L"%llu:%02llu (%d.%02dKB/s)", elapsed / 60, elapsed % 60, rate / 1000, rate / 10 % 100);
 	}
 	else {
-		_snwprintf_s(buff, _countof(buff), _TRUNCATE, L"%d:%02d (%d.%02dMB/s)", elapsed / 60, elapsed % 60, rate / (1000 * 1000), rate / 10000 % 100);
+		_snwprintf_s(buff, _countof(buff), _TRUNCATE, L"%llu:%02llu (%d.%02dMB/s)", elapsed / 60, elapsed % 60, rate / (1000 * 1000), rate / 10000 % 100);
 	}
 
 	SetDlgItemTextW(HDlg, id_Item, buff);

diff --git a/teraterm/common/dlglib.h b/teraterm/common/dlglib.h
@@ -44,7 +44,7 @@ void SetRB(HWND HDlg, int R, int FirstId, int LastId);
 void GetRB(HWND HDlg, LPWORD R, int FirstId, int LastId);
 void SetDlgNum(HWND HDlg, int id_Item, LONG Num);
 void SetDlgPercent(HWND HDlg, int id_Item, int id_Progress, LONG a, LONG b, int *prog);
-void SetDlgTime(HWND HDlg, int id_Item, DWORD elapsed, int bytes);
+void SetDlgTime(HWND HDlg, int id_Item, ULONGLONG elapsed, int bytes);
 void SetDropDownList(HWND HDlg, int Id_Item, const char *List[], int nsel);
 void SetDropDownListW(HWND HDlg, int Id_Item, const wchar_t *List[], int nsel);
 LONG GetCurSel(HWND HDlg, int Id_Item);

diff --git a/teraterm/common/helpid.h b/teraterm/common/helpid.h
@@ -429,6 +429,7 @@
 #define HlpMacroCommandUnlink           92099
 #define HlpMacroCommandUntil            92128
 #define HlpMacroCommandUptime           92212
+#define HlpMacroCommandUptime64         92213
 #define HlpMacroCommandVar2clipb        92114
 #define HlpMacroCommandWait             92100
 #define HlpMacroCommandWait4all         92148

diff --git a/teraterm/common/ttlib.c b/teraterm/common/ttlib.c
@@ -956,24 +956,24 @@ char *mctimelocal(const char *format, BOOL utc_flag)
  *	@return	邨碁℃譎る俣縺ｮ譁�ｭ怜�
  *			荳崎ｦ√↓縺ｪ縺｣縺溘ｉfree()縺吶ｋ縺薙→
  */
-char *strelapsed(DWORD start_time)
+char *strelapsed(ULONGLONG start_time)
 {
 	size_t sizeof_strtime = 20;
 	char *strtime = malloc(sizeof_strtime);
 	int days, hours, minutes, seconds, msecs;
-	DWORD delta = GetTickCount() - start_time;
+	ULONGLONG delta = GetTickCount64() - start_time;
 
-	msecs = delta % 1000;
+	msecs = (int)(delta % 1000);
 	delta /= 1000;
 
-	seconds = delta % 60;
+	seconds = (int)(delta % 60);
 	delta /= 60;
 
-	minutes = delta % 60;
+	minutes = (int)(delta % 60);
 	delta /= 60;
 
-	hours = delta % 24;
-	days = delta / 24;
+	hours = (int)(delta % 24);
+	days = (int)(delta / 24);
 
 	_snprintf_s(strtime, sizeof_strtime, _TRUNCATE,
 		"%d %02d:%02d:%02d.%03d",

diff --git a/teraterm/common/ttlib.h b/teraterm/common/ttlib.h
@@ -137,7 +137,7 @@ DllExport BOOL HasMultiMonitorSupport();
 DllExport BOOL HasDnsQuery();
 DllExport BOOL HasBalloonTipSupport();
 DllExport char *mctimelocal(const char *format, BOOL utc_flag);
-char *strelapsed(DWORD start_time);
+char *strelapsed(ULONGLONG start_time);
 
 void b64encode(PCHAR dst, int dsize, PCHAR src, int len);
 DllExport int b64decode(PCHAR dst, int dsize, PCHAR src);

diff --git a/teraterm/common/tttypes.h b/teraterm/common/tttypes.h
@@ -869,7 +869,7 @@ typedef struct {
 
 	void *NotifyIcon;
 
-	DWORD ConnectedTime;
+	ULONGLONG ConnectedTime;
 
 	void (*Log1Byte)(BYTE b);
 	void (*Log1Bin)(BYTE b);

diff --git a/teraterm/teraterm/buffer.c b/teraterm/teraterm/buffer.c
@@ -115,7 +115,7 @@ static BOOL BoxSelect;			// TRUE=遏ｩ蠖｢驕ｸ謚 / FALSE=陦碁∈謚
 static POINT ClickCell;			// 繧ｯ繝ｪ繝�け縺励◆譁�ｭ幼ell
 static POINT SelectStartOld;	// 謠冗判縺励◆驕ｸ謚樣伜沺縲《tart
 static POINT SelectEndOld;		// 謠冗判縺励◆驕ｸ謚樣伜沺縲‘nd
-static DWORD SelectStartTime;
+static ULONGLONG SelectStartTime;
 static POINT DblClkStart;
 static POINT DblClkEnd;
 
@@ -4749,7 +4749,7 @@ void BuffStartSelect(int Xw, int Yw, BOOL Box, BOOL Shift)
 	Selected = FALSE;
 
 	// 驕ｸ謚樣幕蟋九ぎ繝ｼ繝
-	SelectStartTime = GetTickCount();
+	SelectStartTime = GetTickCount64();
 	Selecting = FALSE;
 
 	// push菴咲ｽｮ
@@ -4778,7 +4778,7 @@ void BuffChangeSelect(int Xw, int Yw, int NClick)
 
 	if (!Selecting) {
 		// 驕ｸ謚槭ぎ繝ｼ繝?
-		if (GetTickCount() - SelectStartTime < ts.SelectStartDelay) {
+		if (GetTickCount64() - SelectStartTime < ts.SelectStartDelay) {
 			// 繧ｬ繝ｼ繝我ｸｭ
 			return;
 		}
@@ -4889,7 +4889,7 @@ void BuffEndSelect(int Xw, int Yw)
 	(void)Xw;
 	(void)Yw;
 	if (!Selecting) {
-		if (GetTickCount() - SelectStartTime < ts.SelectStartDelay) {
+		if (GetTickCount64() - SelectStartTime < ts.SelectStartDelay) {
 			// 繧ｬ繝ｼ繝画凾髢謎ｻ･蜀�↑繧
 			// 驕ｸ謚樣伜沺隗｣髯､
 			SelectEnd = SelectStart;

diff --git a/teraterm/teraterm/commlib.c b/teraterm/teraterm/commlib.c
@@ -805,7 +805,7 @@ void CommStart(PComVar cv, LONG lParam, PTTSet ts)
 			break;
 	}
 	cv->Ready = TRUE;
-	cv->ConnectedTime = GetTickCount();
+	cv->ConnectedTime = GetTickCount64();
 }
 
 BOOL CommCanClose(PComVar cv)

diff --git a/teraterm/teraterm/filesys.cpp b/teraterm/teraterm/filesys.cpp
@@ -66,7 +66,7 @@ typedef struct {
 	LONG FileSize; // uint64_t FileSize;  TODO
 	LONG ByteCount; // uint64_t ByteCount;
 
-	DWORD StartTime;
+	ULONGLONG StartTime;
 	BOOL FilePause;
 
 	BOOL FileRetrySend, FileRetryEcho, FileCRSend, FileReadEOF, BinaryMode;
@@ -118,7 +118,7 @@ static BOOL OpenFTDlg(PFileVar fv)
 	free(DlgCaption);
 
 	fv->FilePause = FALSE;
-	fv->StartTime = GetTickCount();
+	fv->StartTime = GetTickCount64();
 	fv->SendDlg = FTDlg; /* File send */
 
 	return TRUE;