OGL problem

[nelson -]

Hi all!
i'm implementing a timeline panel, like the adobe flash editor panel.
I' trying to do it using wx.lib.ogl package. The problem i have found
is that i can't figure out how to constraint a rectangle to don't move
in y direction... I want be able only to move it left and right,
evenutlly makeing it longer or shorter.... I can't find out many docs
on ogl except a tutorial on wxpython wiki and an example in the demo.

Can anyone help me?

thanks,
  nelson