@

fix: window activation bug - verify PID before using cached HWND

Root cause: _ensure_hwnd cached HWND without verifying the owning process.
When target app exits, OS reuses HWND value for another process, causing
activation of wrong window (e.g. browser/editor disguised as QQ/WeChat).

Changes:
- Add _validate_wechat_window() to verify process name == WeChat.exe
- _ensure_hwnd cache hit: verify HWND belongs to target process via PID
- TXGuiFoundation fallback: verify PID belongs to QQ.exe/TIM.exe
- _find_qq_window_fresh: same PID verification for TXGuiFoundation
- _ocr_read_wechat: validate window before OCR capture
- Raise min window size threshold from 200x100 to 300x200 everywhere
@

monitor.py

@@ -684,7 +684,15 @@ class MessageMonitor:
         try:
             if hwnd:
                 if win32gui.IsWindow(hwnd):
-                    return hwnd
+                    # 验证窗口进程是否仍属于目标平台
+                    if platform == "wechat":
+                        if self._validate_wechat_window(hwnd):
+                            return hwnd
+                    elif platform == "qq":
+                        if self._validate_qq_window(hwnd):
+                            return hwnd
+                    else:
+                        return hwnd
         except Exception:
             pass
 
@@ -702,7 +710,7 @@ class MessageMonitor:
                     w = auto.WindowControl(Name=name)
                     if w.Exists(maxSearchSeconds=0.5):
                         rect = w.BoundingRectangle
-                        if rect.width() > 200 and rect.height() > 100:
+                        if rect.width() > 300 and rect.height() > 200:
                             h = w.NativeWindowHandle
                             # 确保存顶层窗口句柄（与 GetForegroundWindow 返回值一致）
                             top = win32gui.GetAncestor(h, win32con.GA_ROOT)
@@ -745,7 +753,7 @@ class MessageMonitor:
                                 if not (win32gui.IsWindow(top) and win32gui.IsWindowVisible(top)):
                                     continue
                                 rect = win32gui.GetWindowRect(top)
-                                if (rect[2] - rect[0]) > 200 and (rect[3] - rect[1]) > 100:
+                                if (rect[2] - rect[0]) > 300 and (rect[3] - rect[1]) > 200:
                                     self._cached_hwnd[platform] = top
                                     self._cached_pid[platform] = pid
                                     self._window_not_found_until.pop(platform, None)
@@ -781,7 +789,7 @@ class MessageMonitor:
                                 if not (win32gui.IsWindow(top) and win32gui.IsWindowVisible(top)):
                                     continue
                                 rect = win32gui.GetWindowRect(top)
-                                if (rect[2] - rect[0]) > 200 and (rect[3] - rect[1]) > 100:
+                                if (rect[2] - rect[0]) > 300 and (rect[3] - rect[1]) > 200:
                                     variant = "tim" if "TIM" in proc_name.upper() else "qq_nt"
                                     self._app_variant[platform] = variant
                                     self._cached_hwnd[platform] = top
@@ -799,15 +807,31 @@ class MessageMonitor:
                     try:
                         if child.ClassName == "TXGuiFoundation":
                             rect = child.BoundingRectangle
-                            if rect.width() > 200 and rect.height() > 100:
+                            if rect.width() > 300 and rect.height() > 200:
                                 h = child.NativeWindowHandle
                                 top = win32gui.GetAncestor(h, win32con.GA_ROOT)
                                 pid = win32process.GetWindowThreadProcessId(top)[1]
+                                # 验证进程是否属于 QQ/TIM
+                                try:
+                                    hproc = win32api.OpenProcess(
+                                        0x0400 | 0x0010,  # PROCESS_QUERY_INFORMATION | PROCESS_VM_READ
+                                        False, pid
+                                    )
+                                    if hproc:
+                                        exe_path = win32process.GetModuleFileNameEx(hproc, 0)
+                                        win32api.CloseHandle(hproc)
+                                        exe_name = exe_path.split('\\')[-1].lower() if exe_path else ''
+                                        if exe_name not in ('qq.exe', 'tim.exe'):
+                                            continue  # 不是QQ/TIM，跳过
+                                    else:
+                                        continue  # 无法打开进程，跳过
+                                except Exception:
+                                    continue  # 验证失败，跳过
                                 self._app_variant[platform] = "qq_nt"
                                 self._cached_hwnd[platform] = top
                                 self._cached_pid[platform] = pid
                                 self._window_not_found_until.pop(platform, None)
-                                logger.info(f"[{platform}] 窗口已定位(UIA TXGuiFoundation): top={top}")
+                                logger.info(f"[{platform}] 窗口已定位(UIA TXGuiFoundation): top={top} pid={pid}")
                                 return top
                     except Exception:
                         continue
@@ -873,7 +897,7 @@ class MessageMonitor:
                     w = auto.WindowControl(Name=name)
                     if w.Exists(maxSearchSeconds=0.2):
                         rect = w.BoundingRectangle
-                        if rect.width() > 200 and rect.height() > 100:
+                        if rect.width() > 300 and rect.height() > 200:
                             return w
                 except Exception:
                     pass
@@ -883,7 +907,25 @@ class MessageMonitor:
                 try:
                     if child.ClassName == "TXGuiFoundation":
                         rect = child.BoundingRectangle
-                        if rect.width() > 200 and rect.height() > 100:
+                        if rect.width() > 300 and rect.height() > 200:
+                            # 验证进程是否属于 QQ/TIM
+                            h = child.NativeWindowHandle
+                            top = win32gui.GetAncestor(h, win32con.GA_ROOT)
+                            pid = win32process.GetWindowThreadProcessId(top)[1]
+                            try:
+                                hproc = win32api.OpenProcess(
+                                    0x0400 | 0x0010, False, pid
+                                )
+                                if hproc:
+                                    exe_path = win32process.GetModuleFileNameEx(hproc, 0)
+                                    win32api.CloseHandle(hproc)
+                                    exe_name = exe_path.split('\\')[-1].lower() if exe_path else ''
+                                    if exe_name not in ('qq.exe', 'tim.exe'):
+                                        continue
+                                else:
+                                    continue
+                            except Exception:
+                                continue
                             return child
                 except Exception:
                     pass
@@ -1226,6 +1268,31 @@ class MessageMonitor:
             pass
         return False
 
+    def _validate_wechat_window(self, hwnd: int) -> bool:
+        """验证窗口是否确实是微信进程。"""
+        if not win32gui.IsWindow(hwnd):
+            return False
+        if not win32gui.IsWindowVisible(hwnd):
+            return False
+        if win32gui.IsIconic(hwnd):
+            return False
+        # 验证进程名
+        try:
+            _, pid = win32process.GetWindowThreadProcessId(hwnd)
+            hproc = win32api.OpenProcess(
+                0x0400 | 0x0010,  # PROCESS_QUERY_INFORMATION | PROCESS_VM_READ
+                False, pid
+            )
+            if hproc:
+                exe_path = win32process.GetModuleFileNameEx(hproc, 0)
+                win32api.CloseHandle(hproc)
+                exe_name = exe_path.split('\\')[-1].lower() if exe_path else ''
+                if exe_name in ('wechat.exe',):
+                    return True
+        except Exception:
+            pass
+        return False
+
     @staticmethod
     def _fuzzy_duplicate(new_text: str, seen_set: set, threshold: float = 0.80) -> bool:
         """检查 new_text 是否与 seen_set 中已有文本相似度超阈值。
@@ -1945,7 +2012,7 @@ class MessageMonitor:
         hwnd = self._cached_hwnd.get("wechat")
         if not hwnd:
             return []
-        if not win32gui.IsWindow(hwnd):
+        if not win32gui.IsWindow(hwnd) or not self._validate_wechat_window(hwnd):
             self._cached_hwnd.pop("wechat", None)
             self._cached_pid.pop("wechat", None)
             return []