A Couple of questions on OGL Lineshapes

[Robin Dunn]

Javier Cámara Moreno wrote:

> referring to the OGL (Object Graphics Library), provided with wx 
> (wx.lib.ogl). The problem is specifically located in the LineShape 
> class. When I try to add text I always get a background rectangle 
> associated to the region of the line shape. I've seen several posts in 
> forums describing the same problem (i.e., drawing the text on a 
> transparent background) but haven't found any answers. I don't know if 
> it is a bug or maybe there is a workaround to make that background 
> transparent. Check out the following code snippet:
>                            ...
>               line = ogl.LineShape()
>               line.AddText('I want this text to be drawn on a 
> transparent background')
>               line.AddArrow(ogl.ARROW_ARROW,1,8,0.0,'',None,-1)
>               line.SetBrush(wx.BLACK_BRUSH)
>               line.MakeLineControlPoints(2)
>               source.AddLine(line, target)
>               self.canvas.AddShape(line)
>               ...
> 
> If there is anybody out there experienced with OGL, I'd appreciate very 
> much a hint with this. 

The person who ported OGL to Python (Pierre Hjälm) usually reads the 
wxPython-users list, so you may be able to get a response from him, or 
from one of the other wxPython users that may have also used OGL.


-- 
Robin Dunn
Software Craftsman
http://wxPython.org  Java give you jitters?  Relax with wxPython!