Improve window filter to include start menu and Cortana search box. (#474)

Also moves GetProcessPath* functions to common, renaming both to
get_process_path.

src/common/common.cpp

@@ -35,10 +35,11 @@ std::optional<POINT> get_mouse_pos() {
 HWND get_filtered_active_window() {
   static auto desktop = GetDesktopWindow();
   static auto shell = GetShellWindow();
+  static HWND searchui = nullptr;
   auto active_window = GetForegroundWindow();
   active_window = GetAncestor(active_window, GA_ROOT);
 
-  if (active_window == desktop || active_window == shell) {
+  if (active_window == desktop || active_window == shell || active_window == searchui) {
     return nullptr;
   }
   
@@ -61,6 +62,16 @@ HWND get_filtered_active_window() {
       strcmp(class_name, "Progman") == 0) {
     return nullptr;
   }
+  if (strcmp(class_name, "Windows.UI.Core.CoreWindow") == 0) {
+    const static std::wstring cortana_app = L"SearchUI.exe";
+    auto process_path = get_process_path(active_window);
+    if (process_path.length() >= cortana_app.length() &&
+        process_path.compare(process_path.length() - cortana_app.length(), cortana_app.length(), cortana_app) == 0) {
+      // cache the cortana HWND
+      searchui = active_window;
+      return nullptr;
+    }
+  }
   return active_window;
 }
 
@@ -235,3 +246,47 @@ bool drop_elevated_privileges() {
 
   return result;
 }
+
+std::wstring get_process_path(DWORD pid) noexcept {
+  auto process = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, TRUE, pid);
+  std::wstring name;
+  if (process != INVALID_HANDLE_VALUE) {
+    name.resize(MAX_PATH);
+    DWORD name_length = static_cast<DWORD>(name.length());
+    if (QueryFullProcessImageNameW(process, 0, (LPWSTR)name.data(), &name_length) == 0) {
+      name_length = 0;
+    }
+    name.resize(name_length);
+    CloseHandle(process);
+  }
+  return name;
+}
+
+std::wstring get_process_path(HWND window) noexcept {
+  const static std::wstring app_frame_host = L"ApplicationFrameHost.exe";
+  DWORD pid{};
+  GetWindowThreadProcessId(window, &pid);
+  auto name = get_process_path(pid);
+  if (name.length() >= app_frame_host.length() &&
+      name.compare(name.length() - app_frame_host.length(), app_frame_host.length(), app_frame_host) == 0) {
+    // It is a UWP app. We will enumarate the windows and look for one created
+    // by something with a different PID
+    DWORD new_pid = pid;
+    EnumChildWindows(window, [](HWND hwnd, LPARAM param) -> BOOL {
+      auto new_pid_ptr = reinterpret_cast<DWORD*>(param);
+      DWORD pid;
+      GetWindowThreadProcessId(hwnd, &pid);
+      if (pid != *new_pid_ptr) {
+        *new_pid_ptr = pid;
+        return FALSE;
+      } else {
+        return TRUE;
+      }
+    }, reinterpret_cast<LPARAM>(&new_pid));
+    // If we have a new pid, get the new name.
+    if (new_pid != pid) {
+      return get_process_path(new_pid);
+    }
+  }
+  return name;
+}

src/common/common.h

@@ -43,3 +43,8 @@ bool is_process_elevated();
 
 // Drops the elevated privilages if present
 bool drop_elevated_privileges();
+
+// Get the executable path or module name for modern apps
+std::wstring get_process_path(DWORD pid) noexcept;
+// Get the executable path or module name for modern apps
+std::wstring get_process_path(HWND hwnd) noexcept;

src/modules/fancyzones/lib/FancyZones.cpp

@@ -169,7 +169,7 @@ IFACEMETHODIMP_(void) FancyZones::WindowCreated(HWND window) noexcept
 {
     if (m_settings->GetSettings().appLastZone_moveWindows)
     {
-        auto processPath = GetProcessPath(window);
+        auto processPath = get_process_path(window);
         if (!processPath.empty()) 
         {
             INT zoneIndex = -1;
@@ -697,7 +697,7 @@ void FancyZones::MoveSizeEndInternal(HWND window, POINT const& ptScreen, require
     {
         ::RemoveProp(window, ZONE_STAMP);
 
-        auto processPath = GetProcessPath(window);
+        auto processPath = get_process_path(window);
         if (!processPath.empty())
         {
             RegistryHelpers::SaveAppLastZone(window, processPath.data(), -1);

src/modules/fancyzones/lib/ZoneWindow.cpp

@@ -1252,7 +1252,7 @@ int ZoneWindow::GetSwitchButtonIndexFromPoint(POINT ptClient) noexcept
 
 IFACEMETHODIMP_(void) ZoneWindow::SaveWindowProcessToZoneIndex(HWND window) noexcept
 {
-    auto processPath = GetProcessPath(window);
+    auto processPath = get_process_path(window);
     if (!processPath.empty())
     {
         DWORD zoneIndex = static_cast<DWORD>(m_activeZoneSet->GetZoneIndexFromWindow(window));

src/modules/fancyzones/lib/util.h

@@ -133,53 +133,3 @@ inline void ParseDeviceId(PCWSTR deviceId, PWSTR parsedId, size_t size)
         StringCchCopy(parsedId, size, L"FallbackDevice");
     }
 }
-
-inline std::wstring GetProcessPathByPID(DWORD pid)
-{
-    wil::unique_handle process(OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, TRUE, pid));
-    std::wstring name;
-    if (process && process.get() != INVALID_HANDLE_VALUE)
-    {
-        name.resize(MAX_PATH);
-        DWORD name_length = static_cast<DWORD>(name.length());
-        QueryFullProcessImageNameW(process.get(), 0, (LPWSTR)name.data(), &name_length);
-        name.resize(name_length);
-    }
-    return name;
-}
-
-inline std::wstring GetProcessPath(HWND window) noexcept
-{
-    const static std::wstring app_frame_host = L"ApplicationFrameHost.exe";
-    DWORD pid{};
-    GetWindowThreadProcessId(window, &pid);
-    auto name = GetProcessPathByPID(pid);
-    if (name.length() >= app_frame_host.length() &&
-        name.compare(name.length() - app_frame_host.length(), app_frame_host.length(), app_frame_host) == 0)
-    {
-        // It is a UWP app. We will enumarate the windows and look for one created
-        // by something with a different PID
-        DWORD new_pid = pid;
-        EnumChildWindows(window, [](HWND hwnd, LPARAM param) -> BOOL
-        {
-            auto new_pid_ptr = reinterpret_cast<DWORD*>(param);
-            DWORD pid;
-            GetWindowThreadProcessId(hwnd, &pid);
-            if (pid != *new_pid_ptr)
-            {
-                *new_pid_ptr = pid;
-                return FALSE;
-            }
-            else
-            {
-                return TRUE;
-            }
-        }, reinterpret_cast<LPARAM>(&new_pid));
-        // If we have a new pid, get the new name.
-        if (new_pid != pid)
-        {
-            return GetProcessPathByPID(new_pid);
-        }
-    }
-    return name;
-}

src/modules/fancyzones/tests/UnitTests/UnitTests.vcxproj

@@ -111,6 +111,9 @@
     <ClInclude Include="Util.h" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\..\..\common\common.vcxproj">
+      <Project>{74485049-c722-400f-abe5-86ac52d929b3}</Project>
+    </ProjectReference>
     <ProjectReference Include="..\..\lib\FancyZonesLib.vcxproj">
       <Project>{f9c68edf-ac74-4b77-9af1-005d9c9f6a99}</Project>
     </ProjectReference>