How to draw an horizontal line?

[Spyro]

Hi, I want to make a header like the ones on this image, but I have no idea on how to draw that horizontal line:

It's an small addon so I'm using no libs, just XML and default API.
Anybody knows how to do it?

[Haleth]

Use CreateTexture(). Example:

local line = f:CreateTexture()
line:SetTexture(.6 ,.6, .6, .2)
line:SetSize(100, 1)
line:SetPoint("CENTER", f)

Where f is the name of your frame.

[Spyro]

Thx for the instant response