Hud problems

[darkmist]

Ok so im making a hud in gmod and i have this proble that whenever i look at a rpop, entity, winder, door player ect it disapears until i look aways, any ideas why, heres my code :

local SC=ScrW()/2


function ScrS(number)

	return ScreenScale(number)

end

local HUDOutline = {
	
	{x=SC-ScrS(200),y=0},
	{x=SC+ScrS(200),y=0},
	{x=SC+ScrS(180),y=ScrS(20)},
	{x=SC-ScrS(180),y=ScrS(20)}
}

function testHUD()


	surface.SetDrawColor(100,100,100,255)
	surface.DrawPoly(HUDOutline)

end

hook.Add("HUDPaint","testHUD",testHUD)

[Acecool]

Typically the hud disappears if there is an error in the hud, or you set HUDShouldDraw to false in certain cases...

There's also:

// 
// Desc: Draw the target id ( the name of the player you're currently looking at )
// 
function GM:HUDDrawTargetID( )
	return true;
end

Take a look at this for hud creation ( and how to use HUDShouldDraw in an optimized way ):
[url]https://dl.dropboxusercontent.com/u/26074909/tutoring/vgui/proper_hud_creation.lua.html[/url]

This for creating shapes using poly ( it also briefly covers recreating the poly if the screensize changes ):
[url]https://dl.dropboxusercontent.com/u/26074909/tutoring/poly/creating_shapes_using_poly.lua.html[/url]

Understanding screensizes / how to hard-code a screensize and have the object show up the same on all resolutions: [url]https://dl.dropboxusercontent.com/u/26074909/tutoring/vgui/understanding_hardcoding_of_screensizes.lua.html[/url]

Without knowing if there's an error being output, the game-mode you're using, etc, there isn't much we can do aside from speculate... But, my guess is there is an error somewhere which is causing the issue.