TinyX

[tibi38]

Dear,
I have now a programm running using XWindows. It runns fine remote with Xming. But I'm not able to use it directly from the Pi on an attached hdmi-monitor.
Is there anyone with a solution?

[-rst-]

Could you provide more info:

1. What language did you code your program in?
2. What GUI libraries did you use?
3. How do you run the program?
4. What does the 'not able to use it' mean in detail (what happens, error messages, other symptoms)?

[tibi38]

I'm using g++ to compile the program with the fltk lib.
The result is: Could not find device.Now I tried to start it after loading startx and then it works.
But I like to start the programm without first loading the startx

[rurwin]

FLTK (pronounced "fulltick") is a LGPL'd C++ graphical user interface toolkit for X (UNIX®), OpenGL®, Microsoft® Windows®, OS/X, and several other platforms.

The RaspPi does not support OpenGL, and even if it did, you would need to rewrite your application to take advantage of it. (See http://www.fltk.org/doc-2.0/html/index.html)

You probably know better than I, I've only just quickly browsed the library documentation, but FLTK seems to require either MS Windows or the X windows system*. You cannot use X unless X is running. Hence you need startx.



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* "It is a windows system called X, not a system called X Windows"

[-rst-]

Looks like OpenGL is not the issue, but FLTK clearly is only for X: "Written directly atop Xlib (or WIN32)..."

Hmm, or maybe it would work on OpenGL (as a platform) without X, but as rurwin says: there is no OpenGL on RPi (but OpenGL ES).

[tibi38]

Thanks for the background information.
I'll now switch over to OpenVG

[mung]

Did anyone ask for help on the fltk lists about these problems???

https://code.google.com/p/ftk/source/br ... .txt?r=780

I only spent 3 minutes skim reading the google code web site, but there seems to be a suggestion that fltk implements a gui tool kit on top of gles????

Not something I am going to look at myself, just noticed these two pages in google searches for similar information, and thought I should post as maybe what is posted in answer here is not correct?.

[AndyD]

FLTK (pronounced "fulltick") is a LGPL'd C++ graphical user interface toolkit for X (UNIX®), OpenGL®, Microsoft® Windows®, OS/X, and several other platforms.

The RaspPi does not support OpenGL, and even if it did, you would need to rewrite your application to take advantage of it. (See http://www.fltk.org/doc-2.0/html/index.html)

No, you don't need to use OpenGL in you FLTK application. The GUI doesn't rely on OpenGL.

Did anyone ask for help on the fltk lists about these problems???

https://code.google.com/p/ftk/source/br ... .txt?r=780

I only spent 3 minutes skim reading the google code web site, but there seems to be a suggestion that fltk implements a gui tool kit on top of gles????

Not something I am going to look at myself, just noticed these two pages in google searches for similar information, and thought I should post as maybe what is posted in answer here is not correct?.

This looks interesting, but it appears to be something called FTK (i.e. missing the L). I don't think it is related to FLTK.

As is says on the front page of http://www.fltk.org

FLTK (pronounced "fulltick") is a cross-platform C++ GUI toolkit for UNIX®/Linux® (X11), Microsoft® Windows®, and MacOS® X. FLTK provides modern GUI functionality without the bloat and supports 3D graphics via OpenGL® and its built-in GLUT emulation.

On UNIX/Linux it is for X11 only. I used FLTK a long while ago. I had been involved in a project using glForms on SGI/IRIX machines. FLTK was partly compatible with glForms.