runner: show message box when restarting with different elevation fails (#1061)

Also make the message box appear on top of the settings window.

src/runner/main.cpp

@@ -79,7 +79,7 @@ int runner()
     catch (std::runtime_error& err)
     {
         std::string err_what = err.what();
-        MessageBoxW(NULL, std::wstring(err_what.begin(), err_what.end()).c_str(), L"Error", MB_OK | MB_ICONERROR);
+        MessageBoxW(nullptr, std::wstring(err_what.begin(), err_what.end()).c_str(), GET_RESOURCE_STRING(IDS_ERROR).c_str(), MB_OK | MB_ICONERROR | MB_SETFOREGROUND);
         result = -1;
     }
     Trace::UnregisterProvider();
@@ -91,8 +91,8 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
     WCHAR username[UNLEN + 1];
     DWORD username_length = UNLEN + 1;
     GetUserNameW(username, &username_length);
-    auto runner_mutex = CreateMutexW(NULL, TRUE, (std::wstring(L"Local\\PowerToyRunMutex") + username).c_str());
-    if (runner_mutex == NULL || GetLastError() == ERROR_ALREADY_EXISTS)
+    auto runner_mutex = CreateMutexW(nullptr, TRUE, (std::wstring(L"Local\\PowerToyRunMutex") + username).c_str());
+    if (runner_mutex == nullptr || GetLastError() == ERROR_ALREADY_EXISTS)
     {
         // The app is already running
         return 0;
@@ -123,7 +123,7 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
     catch (std::runtime_error& err)
     {
         std::string err_what = err.what();
-        MessageBoxW(NULL, std::wstring(err_what.begin(), err_what.end()).c_str(), GET_RESOURCE_STRING(IDS_ERROR).c_str(), MB_OK | MB_ICONERROR);
+        MessageBoxW(nullptr, std::wstring(err_what.begin(), err_what.end()).c_str(), GET_RESOURCE_STRING(IDS_ERROR).c_str(), MB_OK | MB_ICONERROR);
         result = -1;
     }
     ReleaseMutex(runner_mutex);
@@ -134,7 +134,9 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
         {
             auto text = is_process_elevated() ? GET_RESOURCE_STRING(IDS_COULDNOT_RESTART_NONELEVATED) :
                                                 GET_RESOURCE_STRING(IDS_COULDNOT_RESTART_ELEVATED);
-            MessageBoxW(NULL, text.c_str(), GET_RESOURCE_STRING(IDS_ERROR).c_str(), MB_OK | MB_ICONERROR);
+            MessageBoxW(nullptr, text.c_str(), GET_RESOURCE_STRING(IDS_ERROR).c_str(), MB_OK | MB_ICONERROR | MB_SETFOREGROUND);
+
+            restart_same_elevation();
             result = -1;
         }
     }

src/runner/restart_elevated.cpp

@@ -41,3 +41,11 @@ bool restart_if_scheduled()
         return false;
     }
 }
+
+bool restart_same_elevation()
+{
+    constexpr DWORD exe_path_size = 0xFFFF;
+    auto exe_path = std::make_unique<wchar_t[]>(exe_path_size);
+    GetModuleFileNameW(nullptr, exe_path.get(), exe_path_size);
+    return run_same_elevation(exe_path.get(), {});
+}

src/runner/restart_elevated.h

@@ -3,3 +3,4 @@ void schedule_restart_as_elevated();
 void schedule_restart_as_non_elevated();
 bool is_restart_scheduled();
 bool restart_if_scheduled();
+bool restart_same_elevation();