PostRender in C++

[ErhanK]

Hi, I have a question. How can I use "PostRender" in c++ for drawing a rectangle like this lua script? I did but, screen is flickering. I think this is must be in PostRender

--This function will be called after the world is rendered, before the screen is refreshed.
--Use this to perform any 2D drawing you want the entity to display.
function Script:PostRender(context)
	local window = context:GetWindow()

	context:SetBlendMode(Blend.Alpha)
	--draw selection rectangle
	if ( self.beginSelectPos ~= nil and self.endSelectPos ~= nil ) then
		
		context:SetColor(1,0,0,0.5)
    	context:DrawRect(self.beginSelectPos.x, self.beginSelectPos.y, self.endSelectPos.x-self.beginSelectPos.x, self.endSelectPos.y-self.beginSelectPos.y)
    	context:SetColor(0,0,0,0)
	end
  
  

 

[SpiderPig]

In C++, after you render the world you can just draw to the context.

World->Update()

World->Render()

Context->DrawRect()

Context->Sync()

[ErhanK]

Really? Ok thank you. I'll try