[AlwaysOnTop] Non-selectable border (#16085)

src/modules/alwaysontop/AlwaysOnTop/WindowBorder.cpp

@@ -96,7 +96,7 @@ bool WindowBorder::Init(HINSTANCE hinstance)
     m_window = CreateWindowExW(WS_EX_LAYERED | WS_EX_TOPMOST | WS_EX_TOOLWINDOW
         , NonLocalizable::ToolWindowClassName
         , L""
-        , WS_POPUP
+        , WS_POPUP | WS_DISABLED
         , windowRect.left
         , windowRect.top
         , windowRect.right - windowRect.left
@@ -218,6 +218,10 @@ LRESULT WindowBorder::WndProc(UINT message, WPARAM wparam, LPARAM lparam) noexce
     case WM_ERASEBKGND:
         return TRUE;
 
+    // prevent from beeping if the border was clicked
+    case WM_SETCURSOR:
+        return TRUE;
+
     default:
     {
         return DefWindowProc(m_window, message, wparam, lparam);