gtk4/org.gtkkn.bindings.gtk/DrawingAreaDrawFunc

DrawingAreaDrawFunc

typealias DrawingAreaDrawFunc = (drawingArea: DrawingArea, <Error class: unknown class>, <Error class: unknown class>, <Error class: unknown class>) -> Unit(source)

Whenever @drawing_area needs to redraw, this function will be called.

This function should exclusively redraw the contents of the drawing area and must not call any widget functions that cause changes.

  • param drawingArea the GtkDrawingArea to redraw

  • param cr the context to draw to

  • param width the actual width of the contents. This value will be at least as wide as GtkDrawingArea:width.

  • param height the actual height of the contents. This value will be at least as wide as GtkDrawingArea:height.