From e3d71b56908509e4165e4916a3118adc99064def Mon Sep 17 00:00:00 2001
From: Don-Vito <khvitaly@gmail.com>
Date: Sun, 11 Oct 2020 16:18:12 +0300
Subject: [PATCH] 7571: do not activate island windows upon updating position

---
 src/cascadia/WindowsTerminal/IslandWindow.cpp          | 8 ++++----
 src/cascadia/WindowsTerminal/NonClientIslandWindow.cpp | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/cascadia/WindowsTerminal/IslandWindow.cpp b/src/cascadia/WindowsTerminal/IslandWindow.cpp
index 4312fb59df8..34dc72d85ac 100644
--- a/src/cascadia/WindowsTerminal/IslandWindow.cpp
+++ b/src/cascadia/WindowsTerminal/IslandWindow.cpp
@@ -263,7 +263,7 @@ void IslandWindow::Initialize()
 void IslandWindow::OnSize(const UINT width, const UINT height)
 {
     // update the interop window size
-    SetWindowPos(_interopWindowHandle, nullptr, 0, 0, width, height, SWP_SHOWWINDOW);
+    SetWindowPos(_interopWindowHandle, nullptr, 0, 0, width, height, SWP_SHOWWINDOW | SWP_NOACTIVATE);
 
     if (_rootGrid)
     {
@@ -499,7 +499,7 @@ void IslandWindow::SetAlwaysOnTop(const bool alwaysOnTop)
                      0,
                      0,
                      0,
-                     SWP_NOMOVE | SWP_NOSIZE);
+                     SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
     }
 }
 
@@ -613,7 +613,7 @@ void IslandWindow::_SetIsBorderless(const bool borderlessEnabled)
                  windowPos.top<int>(),
                  windowPos.width<int>(),
                  windowPos.height<int>(),
-                 SWP_SHOWWINDOW | SWP_FRAMECHANGED);
+                 SWP_SHOWWINDOW | SWP_FRAMECHANGED | SWP_NOACTIVATE);
 }
 
 // Method Description:
@@ -699,7 +699,7 @@ void IslandWindow::_ApplyWindowSize()
                                          newSize.top,
                                          newSize.right - newSize.left,
                                          newSize.bottom - newSize.top,
-                                         SWP_FRAMECHANGED));
+                                         SWP_FRAMECHANGED | SWP_NOACTIVATE));
 }
 
 DEFINE_EVENT(IslandWindow, DragRegionClicked, _DragRegionClickedHandlers, winrt::delegate<>);
diff --git a/src/cascadia/WindowsTerminal/NonClientIslandWindow.cpp b/src/cascadia/WindowsTerminal/NonClientIslandWindow.cpp
index d8e67e7dec7..17491b15ad1 100644
--- a/src/cascadia/WindowsTerminal/NonClientIslandWindow.cpp
+++ b/src/cascadia/WindowsTerminal/NonClientIslandWindow.cpp
@@ -370,7 +370,7 @@ void NonClientIslandWindow::_UpdateIslandPosition(const UINT windowWidth, const
                                    newIslandPos.Y,
                                    windowWidth,
                                    windowHeight - topBorderHeight,
-                                   SWP_SHOWWINDOW));
+                                   SWP_SHOWWINDOW | SWP_NOACTIVATE));
 
     // This happens when we go from maximized to restored or the opposite
     // because topBorderHeight changes.
@@ -849,7 +849,7 @@ void NonClientIslandWindow::_SetIsBorderless(const bool borderlessEnabled)
                  windowPos.top<int>(),
                  windowPos.width<int>(),
                  windowPos.height<int>(),
-                 SWP_SHOWWINDOW | SWP_FRAMECHANGED);
+                 SWP_SHOWWINDOW | SWP_FRAMECHANGED | SWP_NOACTIVATE);
 }
 
 // Method Description: