ImGui.Core:invisibleButton

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Available since: Gideros 2020.9
Class: ImGui

Description

A flexible button behavior without the visuals. Frequently useful to build custom behaviors using the public api (along with IsItemActive, IsItemHovered, etc.). 

ImGui:invisibleButton(stringID,w,h)

Parameters

stringID: (string) the button ID
w: (number) the button width optional
h: (number) the button height optional

Example

MyClass = Core.class(Sprite)

function MyClass:init()
	self.imgui = ImGui.new()
	-- we create a variable to hold our window status
	self.window01 = true -- window01 exists at start up
	-- order
	self:addChild(self.imgui)
	-- LISTENERS
	self:addEventListener("enterBegin", self.onTransitionInBegin, self)
end

-- LOOP
function MyClass:onEnterFrame(e)
	-- 1 we start ImGui
	self.imgui:newFrame(e)
	-- 2 we build our GUI
	if self.window01 then -- is window01 existant?
		local windowdrawn = false -- is window01 colapsed?
		self.window01, windowdrawn = self.imgui:beginWindow(
			"Hello ImGui", -- window title
			self.window01 -- is window01 existant?
		)
		if windowdrawn then -- the variable is false when window01 is collapsed
			if self.imgui:invisibleButton("invisible btn 01") then print("button clicked") end
		end
		self.imgui:endWindow()
	end
	self.imgui:endFrame()
	self.imgui:render()
end

-- EVENT LISTENERS
function MyClass:onTransitionInBegin()
	self:addEventListener(Event.ENTER_FRAME, self.onEnterFrame, self)
end



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