if (isMenuActive != lastIsMenuActive)
        {
            if (isMenuActive)
            {
                /* Remove TRANSPARENT and NOACTIVATE. */
                LONG ex = GetWindowLong(hwnd, GWL_EXSTYLE);
                ex &= ~WS_EX_TRANSPARENT;
                ex &= ~WS_EX_NOACTIVATE;
                ex |= (WS_EX_TOPMOST | WS_EX_LAYERED | WS_EX_TOOLWINDOW);
                SetWindowLong(hwnd, GWL_EXSTYLE, ex);
                SetWindowPos
                (
                    hwnd, nullptr, 0, 0, 0, 0,
                    SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED
                );

                /* Activate the overlay so the game stops receiving input. */
                DWORD gameTid = GetWindowThreadProcessId(hTargetWindow, nullptr);
                DWORD myTid = GetCurrentThreadId();
                AttachThreadInput(myTid, gameTid, TRUE);
                SetForegroundWindow(hwnd);
                SetActiveWindow(hwnd);
                SetFocus(hwnd);
                AttachThreadInput(myTid, gameTid, FALSE);

                /* Capture the mouse (all WM_MOUSE messages go to us). */
                if (GetCapture() != hwnd)
                    SetCapture(hwnd);

                /* If the game hides the cursor, draw the ImGui cursor. */
                ImGui::GetIO().MouseDrawCursor = true;
            }
            else
            {
                /* Restore click-through behavior for the overlay. */
                LONG ex = GetWindowLong(hwnd, GWL_EXSTYLE);
                ex |= WS_EX_TRANSPARENT;
                ex &= ~WS_EX_NOACTIVATE; // keep without NOACTIVATE so clicking can activate
                ex |= (WS_EX_TOPMOST | WS_EX_LAYERED | WS_EX_TOOLWINDOW);
                SetWindowLong(hwnd, GWL_EXSTYLE, ex);
                SetWindowPos
                (
                    hwnd, nullptr, 0, 0, 0, 0,
                    SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED
                );

                if (GetCapture() == hwnd)
                    ReleaseCapture();

                ImGui::GetIO().MouseDrawCursor = false;

                /* Return focus to the game. */
                if (IsWindow(hTargetWindow))
                    SetForegroundWindow(hTargetWindow);
            }