Canvas.sync | LuaRT free and open source Windows programming framework for Lua

Canvas.sync read/write property

Get or set the Canvas synchronisation mode. When set to true (the default), the Canvas is redrawn 30 times per second by calling its Canvas.onPaint() event.

Example


local ui = require "ui"
require "canvas"

local win = ui.Window("Canvas.sync example", "fixed", 320, 240)
win:show()

local c = ui.Canvas(win)
c.align = "all"
c.pos = -100
c.font = "Impact"
c.fontsize = 24
c.color = 0xA2D2FFFF
c.sync = true

-- Uses internal timer for 30fps drawing
function c:onPaint()
  c:print("Hello World !", c.pos, 20)
  c.pos = c.pos + 3
  if c.pos > win.width then
    c.pos = -100
  end
end

repeat
  ui.update()
until win.visible == false