Add new window setting: always on top

Implemented for Windows and Linux.

2 files changed, 21 insertions, 0 deletions

diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp
index 4f4b225b1..fdf0efc8a 100644
--- a/platform/windows/os_windows.cpp
+++ b/platform/windows/os_windows.cpp
@@ -1068,6 +1068,10 @@ Error OS_Windows::initialize(const VideoMode &p_desired, int p_video_driver, int
 		}
 	};
 
+	if (video_mode.always_on_top) {
+		SetWindowPos(hWnd, video_mode.always_on_top ? HWND_TOPMOST : HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
+	}
+
 #if defined(OPENGL_ENABLED)
 	gl_context = memnew(ContextGL_Win(hWnd, true));
 	gl_context->initialize();
@@ -1601,6 +1605,19 @@ bool OS_Windows::is_window_maximized() const {
 	return maximized;
 }
 
+void OS_Windows::set_window_always_on_top(bool p_enabled) {
+	if (video_mode.always_on_top == p_enabled)
+		return;
+
+	video_mode.always_on_top = p_enabled;
+
+	_update_window_style();
+}
+
+bool OS_Windows::is_window_always_on_top() const {
+	return video_mode.always_on_top;
+}
+
 void OS_Windows::set_borderless_window(bool p_borderless) {
 	if (video_mode.borderless_window == p_borderless)
 		return;
@@ -1625,6 +1642,8 @@ void OS_Windows::_update_window_style(bool repaint) {
 		}
 	}
 
+	SetWindowPos(hWnd, video_mode.always_on_top ? HWND_TOPMOST : HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
+
 	if (repaint) {
 		RECT rect;
 		GetWindowRect(hWnd, &rect);
diff --git a/platform/windows/os_windows.h b/platform/windows/os_windows.h
index c24e35e92..2f6d5ac60 100644
--- a/platform/windows/os_windows.h
+++ b/platform/windows/os_windows.h
@@ -210,6 +210,8 @@ public:
 	virtual bool is_window_minimized() const;
 	virtual void set_window_maximized(bool p_enabled);
 	virtual bool is_window_maximized() const;
+	virtual void set_window_always_on_top(bool p_enabled);
+	virtual bool is_window_always_on_top() const;
 	virtual void request_attention();
 
 	virtual void set_borderless_window(bool p_borderless);