How to make a embedded canvas with the GL dis

ROOT
1

Hello,
I wrote a simple GUI with a canvas to display some 3D objects. Of cause the objects are displayed in “pad” style when I use Draw(); and in “GL” style when I use Draw(“ogl”).
My question is that the objects will be displayed in the external viewer when I choose Draw(“ogl”), can I make a embedded canvas in my GUI with the GL displaying style?

2

We just make recent developments to allow to use OpenGL for all graphics in ROOT.
It is in 5.34 patches and in roottrunk.
It $ROOTSYS/etc/syetme.rootrc is enough to do:

# Flag to set CanvasPreferGL via gStyle
OpenGL.CanvasPreferGL:                      1
3

[quote=“couet”]We just make recent developments to allow to use OpenGL for all graphics in ROOT.
It is in 5.34 patches and in roottrunk.
It $ROOTSYS/etc/syetme.rootrc is enough to do:

[code]

Flag to set CanvasPreferGL via gStyle

OpenGL.CanvasPreferGL: 1
[/code][/quote]

dear couet,
i tried to add the following to my program but there is still something wrong:
gStyle->CanvasPreferGL;
maybe the command is not right…
thanks!

4

gStyle->CanvasPreferGL(1);

5

dear couet,
maybe it’s necessary to add the syetme.rootrc to the program? the ROOT says Error: can’t call TStyle::canvasprefergl(1)
but the command “#include <syetme.rootrc>” is wrong.
thanks!

6

sorry it is:

gStyle->SetCanvasPreferGL(1);
7

[quote=“couet”]sorry it is:

gStyle->SetCanvasPreferGL(1); [/quote]

dear couet,
thanks a lot. the “gStyle->SetCanvasPreferGL(0);” will work but the ROOT breaks down when the parameter changes into 1. I’m now checking the program.

8

On which machine ? which ROOT version ? do you have OpenGL installed ?

9

dear couet,
it works! your advertisement is really helpful.
thank you very much! =D> =D>