Feature: Show live transfer speed in file-transfer dialog title

Add a smoothed bytes-per-second readout to the CDlgFileSend title,
refreshed about every 200 ms during transfer (e.g. "发送文件 - 5.3M/s").
The base title is captured on the first progress frame and the speed
suffix applied through Unicode APIs (GetWindowTextW / SetWindowTextW),
so the whole title stays correct on non-Chinese systems where the ANSI
message path would misdecode GBK as the system ACP.

Also add the missing "接收文件 (V2)" translation (en_US "Receive File (V2)",
zh_TW "接收檔案 (V2)"), so the V2 receive title no longer falls back to
raw Chinese on non-Chinese systems.

Co-Authored-By: deepseek-v4-pro

server/2015Remote/CDlgFileSend.cpp

@@ -151,6 +151,54 @@ void CDlgFileSend::UpdateProgress(CString file, const FileProgressInfo& info)
     PostMessageA(WM_UPDATEFILEPROGRESS, (WPARAM)new CString(file), (LPARAM)new FileProgressInfo(info));
 }
 
+// 将字节/秒格式化为人类可读的速度串（如 "5.3M/s"、"320K/s"、"800B/s"）
+static CStringW FormatSpeed(double bps)
+{
+    CStringW s;
+    if (bps >= 1024.0 * 1024.0)
+        s.Format(L"%.1fM/s", bps / (1024.0 * 1024.0));
+    else if (bps >= 1024.0)
+        s.Format(L"%.0fK/s", bps / 1024.0);
+    else
+        s.Format(L"%.0fB/s", bps);
+    return s;
+}
+
+// 累计字节并周期性刷新标题中的速度（如 "发送文件 - 5.3M/s"）
+void CDlgFileSend::UpdateTitleWithSpeed(uint64_t dataLength)
+{
+    m_ullTotalBytes += dataLength;
+    ULONGLONG now = GetTickCount64();
+
+    // 首帧：用 Unicode API 捕获当前标题作为基础部分（可能已被 V2/C2C 覆盖为 "接收文件 (V2)" 等），
+    // 并建立采样基准；此时尚无速度可显示。
+    if (!m_bBaseTitleCaptured) {
+        WCHAR wBase[128] = { 0 };
+        ::GetWindowTextW(m_hWnd, wBase, 128);
+        m_strBaseTitle = wBase;
+        m_bBaseTitleCaptured = true;
+        m_ullLastTick = now;
+        m_ullLastBytes = m_ullTotalBytes;
+        return;
+    }
+
+    ULONGLONG dt = now - m_ullLastTick;
+    if (dt < 200) return;  // 采样间隔未到，仅累积字节
+
+    uint64_t delta = m_ullTotalBytes - m_ullLastBytes;
+    double speed = dt ? (double)delta * 1000.0 / (double)dt : 0.0;
+    m_dSpeedBps = (m_dSpeedBps == 0.0) ? speed : m_dSpeedBps * 0.6 + speed * 0.4;  // 轻度平滑
+
+    m_ullLastTick = now;
+    m_ullLastBytes = m_ullTotalBytes;
+
+    // 基础标题（Unicode）+ ASCII 速度后缀，全程 Unicode API，避免非中文系统上 ANSI 消息按系统 ACP 解码乱码
+    CStringW title = m_strBaseTitle;
+    title += L" - ";
+    title += FormatSpeed(m_dSpeedBps);
+    ::SetWindowTextW(m_hWnd, title);
+}
+
 void CDlgFileSend::FinishFileSend(BOOL succeed)
 {
     if (!GetSafeHwnd()) return;
@@ -170,6 +218,7 @@ LRESULT CDlgFileSend::OnUpdateFileProgress(WPARAM wParam, LPARAM lParam)
     SetDlgItemText(IDC_STATIC_CURRENTINDEX, status);
     SetDlgItemText(IDC_STATIC_CURRENT_FILE, *pFile);
     m_Progress.SetPos((int)percent);
+    UpdateTitleWithSpeed(pInfo->dataLength);
 
     // 只在第一次显示时置顶，后续更新不抢焦点
     if (!IsWindowVisible()) {

server/2015Remote/CDlgFileSend.h

@@ -51,6 +51,14 @@ public:
     BOOL m_bTargetOffline = FALSE;   // C2C目标已离线，已发送取消包
     enum { IDD = IDD_DIALOG_FILESEND };
 
+    // 传输速度统计（用于标题实时显示速度，如 "发送文件 - 5.3M/s"）
+    CStringW  m_strBaseTitle;               // 标题基础部分（"发送文件"/"接收文件 (V2)" 等，Unicode），首帧进度时捕获
+    bool      m_bBaseTitleCaptured = false;
+    uint64_t  m_ullTotalBytes = 0;          // 累计传输字节
+    uint64_t  m_ullLastBytes = 0;
+    ULONGLONG m_ullLastTick = 0;            // 上次速度采样时刻 (ms)
+    double    m_dSpeedBps = 0.0;            // 平滑后的速度 (B/s)
+
 protected:
     virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持
 
@@ -59,6 +67,8 @@ protected:
     afx_msg LRESULT OnUpdateFileProgress(WPARAM wParam, LPARAM lParam);
     afx_msg LRESULT OnFinishFileSend(WPARAM wParam, LPARAM lParam);
 
+    void UpdateTitleWithSpeed(uint64_t dataLength);  // 累计字节并周期性刷新标题速度
+
 public:
     CProgressCtrl m_Progress;
     virtual BOOL OnInitDialog();

server/2015Remote/lang/en_US.ini

@@ -1400,6 +1400,7 @@ RDP
 C2C 文件传输=C2C File Transfer
 续传文件 (V2)=Resume File Upload (V2)
 发送文件 (V2)=Send File (V2)
+接收文件 (V2)=Receive File (V2)
 发送文件(%d/%d): %.2f%%=Send Files(%d/%d): %.2f%%
 接收文件(%d/%d): %.2f%%=Recv Files(%d/%d): %.2f%%
 [远程右键复制, 本地 Ctrl+V 粘贴]= [Remote Right-click Copy, Local Ctrl+V Paste]

server/2015Remote/lang/zh_TW.ini

@@ -1396,6 +1396,7 @@ RDP
 C2C 文件传输=C2C 檔案傳輸
 续传文件 (V2)=續傳檔案 (V2)
 发送文件 (V2)=傳送檔案 (V2)
+接收文件 (V2)=接收檔案 (V2)
 发送文件(%d/%d): %.2f%%=发送文件(%d/%d): %.2f%%
 接收文件(%d/%d): %.2f%%=接收文件(%d/%d): %.2f%%
 [远程右键复制, 本地 Ctrl+V 粘贴]= [遠端右鍵複製, 本地 Ctrl+V 貼上]