From 7aeac4996b244935bf939e823e2a711577ebcc3b Mon Sep 17 00:00:00 2001
From: Bartosz Sosnowski <bzoz@users.noreply.github.com>
Date: Wed, 11 Sep 2019 12:38:58 +0200
Subject: [PATCH] Don't show the tasklist arrows when taskbar is autohide
 (#340)

Ref: https://github.com/microsoft/PowerToys/issues/291
---
 src/modules/shortcut_guide/overlay_window.cpp | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/modules/shortcut_guide/overlay_window.cpp b/src/modules/shortcut_guide/overlay_window.cpp
index 61bbc0054f..b26f0aa8fc 100644
--- a/src/modules/shortcut_guide/overlay_window.cpp
+++ b/src/modules/shortcut_guide/overlay_window.cpp
@@ -228,10 +228,15 @@ void D2DOverlayWindow::show(HWND active_window) {
   lock.unlock();
   D2DWindow::show(primary_screen.left(), primary_screen.top(), primary_screen.width(), primary_screen.height());
   key_pressed.clear();
-  tasklist_cv_mutex.lock();
-  tasklist_update = true;
-  tasklist_cv_mutex.unlock();
-  tasklist_cv.notify_one();
+  // Check if taskbar is auto-hidden. If so, don't display the number arrows
+  APPBARDATA param = {};
+  param.cbSize = sizeof(APPBARDATA);
+  if ((UINT)SHAppBarMessage(ABM_GETSTATE, &param) != ABS_AUTOHIDE) {
+    tasklist_cv_mutex.lock();
+    tasklist_update = true;
+    tasklist_cv_mutex.unlock();
+    tasklist_cv.notify_one();
+  }
   Trace::EventShow();
 }