PlatformEventKind

The default value, which is never enqueued. A PlatformEvent that reads as this one was not initialised.

The window became visible.

The window stopped being visible.

The window moved. Position is its new top-left in desktop coordinates.

The window's client area changed size. Size is the new size in logical points; PixelSize is the new framebuffer size.

The window gained keyboard focus.

The window lost keyboard focus.

The window was minimised. Rendering to it is wasted work until it is restored.

The window was maximised.

The window returned to its normal state from minimised or maximised.

Somebody asked for the window to close — the title-bar button, Alt+F4, the dock.

The window's scale factor changed — it was dragged to a display with a different DPI, or the display's scale was changed under it.

The pointer entered the window's client area.

The pointer left the window's client area.

A key went down. IsRepeat distinguishes auto-repeat.

A key came up.

Committed text. Text is what the user actually typed, after the layout, dead keys and any IME have had their say.

In-progress IME composition. Text is the pre-edit string, SelectionStart and SelectionLength the composition cursor within it.

The pointer moved. Position is window-relative; Delta is the movement since the last event.

A mouse button went down. ClickCount is 2 for the second click of a double-click, as the OS defines one.

A mouse button came up.

The wheel turned, or a trackpad scrolled. Delta is in wheel notches, positive up and right.

A finger touched down. DeviceId identifies the finger for as long as it stays down.

A finger moved.

A finger lifted.

A gamepad was plugged in. DeviceId is its id.

A gamepad was unplugged. Its id is not reused for a different device.

A gamepad button went down.

A gamepad button came up.

A gamepad axis moved. Value is the new position.

A display was added, removed, or had its mode or scale changed. Anything cached from IDisplayInfo is stale.

The process is about to be suspended. Save now; there may be no later.

The process resumed. On Android the graphics surface has been destroyed and recreated, so the swapchain is invalid whatever it claims.

The OS is under memory pressure and would like some back.

The application was asked to quit — the last window closed, a signal arrived, the dock's quit item was used.

A file was dropped on a window. Text is its native path, not a virtual one — it comes from outside anything the engine has mounted.

Text was dropped on a window.