Eto Form Custom Drawable

[dks5254]

I am trying to make a custom drawable control with python eto. However, when I call the function “SupportsCreateGraphics” it returns falls, and of course calling the CreateGraphics() function also fails. Is this just because I am using python?

All I am trying to do is create a control that is essentially a clickable button with a custom drawn background (some different colored curves). Maybe I am doing this the hard way? Any help or suggestions are super appreciated.

[dale (Dale Fugier)]

Hi @dks5254,

Can you provide your non-working source? Also, you might review this sample.

Drawing with Eto

Can someone demonstrate how the Graphics classes work in Eto with python? I can never get the DrawLine() parameters correct, no matter what I input. Can the self.myLine then just be added to a DynamicLayout() or is there another object to handle it? import Rhino.UI import Eto.Drawing as drawing import Eto.Forms as forms import rhinoscriptsyntax as rs class drawShapes(forms.Dialog[bool]): def __init__(self): self.MinimumSize = drawing.Size(200, 200) self.addLine() …

– Dale

[dks5254]

Thanks for that link, I have had a chance to look at that, and it is definitely useful.
ETO_DrawTest.py (4.3 KB)
Here is the non-working source. It simply says “specified method not supported” once it gets to line 12.

I also have noticed that it is possible to use a button with a custom bitmap, which might be the simple solution to my problem after all, since I wouldn’t need to use a custom drawable. However, its still useful for the future for me to try to understand how to make a custom drawable control.

[dale (Dale Fugier)]

Hi @dks5254,

Eto on Rhino for Windows uses WPF. The Drawable.CreateGraphics method is not supported on WPF. This is because WPF uses DirectX, not GDI.

– Dale

[dks5254]

@dale Thank you for the reply, I guess that leads me to the question of whether or not I could find any examples on how to do this with python?