From 26e6a3050c8c768da2fec03db905e413a1ebcc9e Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Tue, 7 Jan 2020 15:16:00 +0300
Subject: [PATCH] Allow non-activatable window on Windows.

---
 ui/platform/linux/ui_utility_linux.cpp |  3 +++
 ui/platform/mac/ui_utility_mac.mm      |  3 +++
 ui/platform/ui_platform_utility.h      |  1 +
 ui/platform/win/ui_utility_win.cpp     | 15 +++++++++++++++
 4 files changed, 22 insertions(+)

diff --git a/ui/platform/linux/ui_utility_linux.cpp b/ui/platform/linux/ui_utility_linux.cpp
index 0bd8f94..e43e672 100644
--- a/ui/platform/linux/ui_utility_linux.cpp
+++ b/ui/platform/linux/ui_utility_linux.cpp
@@ -43,5 +43,8 @@ bool TranslucentWindowsSupported(QPoint globalPosition) {
 	return false;
 }
 
+void IgnoreAllActivation(not_null<QWidget*> widget) {
+}
+
 } // namespace Platform
 } // namespace Ui
diff --git a/ui/platform/mac/ui_utility_mac.mm b/ui/platform/mac/ui_utility_mac.mm
index 4055c4a..a7e05db 100644
--- a/ui/platform/mac/ui_utility_mac.mm
+++ b/ui/platform/mac/ui_utility_mac.mm
@@ -91,5 +91,8 @@ void DrainMainQueue() {
 	_dispatch_main_queue_callback_4CF(nullptr);
 }
 
+void IgnoreAllActivation(not_null<QWidget*> widget) {
+}
+
 } // namespace Platform
 } // namespace Ui
diff --git a/ui/platform/ui_platform_utility.h b/ui/platform/ui_platform_utility.h
index d253c91..dec7e12 100644
--- a/ui/platform/ui_platform_utility.h
+++ b/ui/platform/ui_platform_utility.h
@@ -25,6 +25,7 @@ void ReInitOnTopPanel(not_null<QWidget*> panel);
 void UpdateOverlayed(not_null<QWidget*> widget);
 void ShowOverAll(not_null<QWidget*> widget, bool canFocus = true);
 void BringToBack(not_null<QWidget*> widget);
+void IgnoreAllActivation(not_null<QWidget*> widget);
 
 [[nodiscard]] constexpr bool UseMainQueueGeneric();
 void DrainMainQueue(); // Needed only if UseMainQueueGeneric() is false.
diff --git a/ui/platform/win/ui_utility_win.cpp b/ui/platform/win/ui_utility_win.cpp
index f6fd431..b9ddcbd 100644
--- a/ui/platform/win/ui_utility_win.cpp
+++ b/ui/platform/win/ui_utility_win.cpp
@@ -8,6 +8,8 @@
 
 #include <QtWidgets/QApplication>
 
+#include "base/platform/win/base_windows_h.h"
+
 namespace Ui {
 namespace Platform {
 
@@ -27,5 +29,18 @@ void UpdateOverlayed(not_null<QWidget*> widget) {
 	if (!wv) widget->setAttribute(Qt::WA_WState_Visible, false);
 }
 
+void IgnoreAllActivation(not_null<QWidget*> widget) {
+	const auto handle = reinterpret_cast<HWND>(widget->winId());
+	Assert(handle != nullptr);
+
+	ShowWindow(handle, SW_HIDE);
+	const auto style = GetWindowLong(handle, GWL_EXSTYLE);
+	SetWindowLong(
+		handle,
+		GWL_EXSTYLE,
+		style | WS_EX_NOACTIVATE | WS_EX_APPWINDOW);
+	ShowWindow(handle, SW_SHOW);
+}
+
 } // namespace Platform
 } // namespace Ui