I tried to launch Qt interface on Mac OS X 10.7 (root installed by MacPorts). It opens the window, but keeps throwing a large number of errors:
ROOT 5.34/09 (v5-34-09@v5-34-09, Jun 26 2013, 17:10:36 on macosx64)
CINT/ROOT C/C++ Interpreter version 5.18.00, July 2, 2010
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0] gEnv->SetValue("Gui.Backend","qt");
root [1] gEnv->SetValue("Gui.Factory","qt");
root [2] gEnv->Print()
...
root [3] t = new TBrowser();
** $Id$ this=0x7faa8ce5bcd0
The font "symbol.ttf" was not installed yet
Substitute it with " "Arial" "
Make sure your local "~/.fonts.conf" or "/etc/fonts/fonts.conf" file points to " /opt/local/share/root/fonts " directory to get the proper support for ROOT TLatex class
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineCap: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineWidth: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineJoin: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineDash: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetStrokeColorWithColor: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetFillColorWithColor: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineCap: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineWidth: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineJoin: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineDash: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetStrokeColorWithColor: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetShouldAntialias: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetInterpolationQuality: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextBeginPath: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextAddPath: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextDrawPath: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineCap: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineWidth: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineJoin: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineDash: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetStrokeColorWithColor: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetFillColorWithColor: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineCap: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineWidth: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineJoin: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetLineDash: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetStrokeColorWithColor: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetShouldAntialias: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextSetInterpolationQuality: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextBeginPath: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextAddPath: invalid context 0x0
Jul 25 22:51:37 myhostname root.exe[27120] <Error>: CGContextDrawPath: invalid context 0x0
... ad infinitum ...Any hints about how to solve this? Thank you.