Returns active keyboard layout index. [b]Note:[/b] This method is implemented on Linux, macOS and Windows. Returns the number of keyboard layouts. [b]Note:[/b] This method is implemented on Linux, macOS and Windows. Returns the ISO-639/BCP-47 language code of the keyboard layout at position [code]index[/code]. [b]Note:[/b] This method is implemented on Linux, macOS and Windows. Returns the localized name of the keyboard layout at position [code]index[/code]. [b]Note:[/b] This method is implemented on Linux, macOS and Windows. Sets active keyboard layout. [b]Note:[/b] This method is implemented on Linux, macOS and Windows. Returns the dots per inch density of the specified screen. If [code]screen[/code] is [/code]SCREEN_OF_MAIN_WINDOW[/code] (the default value), a screen with the main window will be used. [b]Note:[/b] On macOS, returned value is inaccurate if fractional display scaling mode is used. [b]Note:[/b] On Android devices, the actual screen densities are grouped into six generalized densities: [codeblock] ldpi - 120 dpi mdpi - 160 dpi hdpi - 240 dpi xhdpi - 320 dpi xxhdpi - 480 dpi xxxhdpi - 640 dpi [/codeblock] [b]Note:[/b] This method is implemented on Android, Linux, macOS and Windows. Returns [code]72[/code] on unsupported platforms. Return the greatest scale factor of all screens. [b]Note:[/b] On macOS returned value is [code]2.0[/code] if there is at least one hiDPI (Retina) screen in the system, and [code]1.0[/code] in all other cases. [b]Note:[/b] This method is implemented on macOS. Return the scale factor of the specified screen by index. [b]Note:[/b] On macOS returned value is [code]2.0[/code] for hiDPI (Retina) screen, and [code]1.0[/code] for all other cases. [b]Note:[/b] This method is implemented on macOS. Returns the on-screen keyboard's height in pixels. Returns 0 if there is no keyboard or if it is currently hidden. Hides the virtual keyboard if it is shown, does nothing otherwise. Shows the virtual keyboard if the platform has one. [code]existing_text[/code] parameter is useful for implementing your own [LineEdit] or [TextEdit], as it tells the virtual keyboard what text has already been typed (the virtual keyboard uses it for auto-correct and predictions). [code]position[/code] parameter is the screen space [Rect2] of the edited text. [code]multiline[/code] parameter needs to be set to [code]true[/code] to be able to enter multiple lines of text, as in [TextEdit]. [code]max_length[/code] limits the number of characters that can be entered if different from [code]-1[/code]. [code]cursor_start[/code] can optionally define the current text cursor position if [code]cursor_end[/code] is not set. [code]cursor_start[/code] and [code]cursor_end[/code] can optionally define the current text selection. [b]Note:[/b] This method is implemented on Android, iOS and UWP. Sets a polygonal region of the window which accepts mouse events. Mouse events outside the region will be passed through. Passing an empty array will disable passthrough support (all mouse events will be intercepted by the window, which is the default behavior). [codeblock] # Set region, using Path2D node. DisplayServer.window_set_mouse_passthrough($Path2D.curve.get_baked_points()) # Set region, using Polygon2D node. DisplayServer.window_set_mouse_passthrough($Polygon2D.polygon) # Reset region to default. DisplayServer.window_set_mouse_passthrough([]) [/codeblock] [b]Note:[/b] On Windows, the portion of a window that lies outside the region is not drawn, while on Linux and macOS it is. [b]Note:[/b] This method is implemented on Linux, macOS and Windows.