[Lazarus] Running an app on boot
I wrote a simple Lazarus program that displays a window and a button and did the same thing using Glade which also uses Gtk+. I am using a Beaglebone Black with the latest stock Debian Jessie image which start a LxQt desktop program after it boots up. When I run my program in the LxQt window or in a terminal window, it runs fine. Now I want my Lazarus or Glade/Gtk program to run when I boot and not see the LxQt desktop program. I have tried using the Crontab with @reboot command method and the create a .service and use systemctl to register and start it. No matter what I try I get " Gtk-WARNING **: cannot open display: ". This also happen on a Beaglebone Green and happens when I use Wheezy or Jessie. What am I doing wrong and how can I fix it? Thanks, Newbie Ed -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
On 01/25/2017 11:40 AM, Ed Murashie via Lazarus wrote: I wrote a simple Lazarus program that displays a window and a button and did the same thing using Glade which also uses Gtk+. I am using a Beaglebone Black with the latest stock Debian Jessie image which start a LxQt desktop program after it boots up. When I run my program in the LxQt window or in a terminal window, it runs fine. Now I want my Lazarus or Glade/Gtk program to run when I boot and not see the LxQt desktop program. I have tried using the Crontab with @reboot command method and the create a .service and use systemctl to register and start it. No matter what I try I get “ Gtk-WARNING **: cannot open display: “. This also happen on a Beaglebone Green and happens when I use Wheezy or Jessie. What am I doing wrong and how can I fix it? You cannot run an X11 application without running X11 server. That's wrong. If you need headless server gui app then you can use xfvb for such purpose , or normally run X11 wm and then run your app there. zeljko -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
On 01/25/2017 08:09 AM, zeljko via Lazarus wrote: On 01/25/2017 11:40 AM, Ed Murashie via Lazarus wrote: I wrote a simple Lazarus program that displays a window and a button and did the same thing using Glade which also uses Gtk+. I am using a Beaglebone Black with the latest stock Debian Jessie image which start a LxQt desktop program after it boots up. When I run my program in the LxQt window or in a terminal window, it runs fine. Now I want my Lazarus or Glade/Gtk program to run when I boot and not see the LxQt desktop program. I have tried using the Crontab with @reboot command method and the create a .service and use systemctl to register and start it. No matter what I try I get “ Gtk-WARNING **: cannot open display: “. This also happen on a Beaglebone Green and happens when I use Wheezy or Jessie. What am I doing wrong and how can I fix it? You cannot run an X11 application without running X11 server. That's wrong. If you need headless server gui app then you can use xfvb for such purpose , or normally run X11 wm and then run your app there. Or switch to a Raspberry Pi and use https://Ultibo.org ? Maybe Ultibo can be ported later to Beaglebone? Regards, Paul www.ControlPascal.com -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
On 2017-01-25 13:26, Paul Breneman via Lazarus wrote: > Or switch to a Raspberry Pi and use https://Ultibo.org ? And then you can also use fpGUI Toolkit to keep things small and “lite” (no large 3rd party libraries required or there dependencies. eg: GTK, Qt etc). Regards, Graeme -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
El 25/01/2017 a las 15:15, Graeme Geldenhuys via Lazarus escribió: > On 2017-01-25 13:26, Paul Breneman via Lazarus wrote: >> Or switch to a Raspberry Pi and use https://Ultibo.org ? > And then you can also use fpGUI Toolkit to keep things small and > “lite” (no large 3rd party libraries required or there dependencies. eg: > GTK, Qt etc). > > Regards, > Graeme > > fpgui needs a "graphic environment", Windows or X (or Mac?) . Doesn't it? -- Saludos Santiago A. -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
On 2017-01-25 15:28, Santiago A. via Lazarus wrote: > fpgui needs a "graphic environment", Windows or X (or Mac?) . Doesn't it? There is a port to Ultibo that doesn't require X11 or GDI. Take a look at the section “Ultibo with fpGUI support” on http://fpgui.sourceforge.net/community.shtml Regards, Graeme -- fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal http://fpgui.sourceforge.net/ My public PGP key: http://tinyurl.com/graeme-pgp -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
On Mi, 2017-01-25 at 02:40 -0800, Ed Murashie via Lazarus wrote: > I wrote a simple Lazarus program that displays a window and a button and did > the same thing using Glade which also uses Gtk+. > > I am using a Beaglebone Black with the latest stock Debian Jessie image > which start a LxQt desktop program after it boots up. > > When I run my program in the LxQt window or in a terminal window, it runs > fine. > > Now I want my Lazarus or Glade/Gtk program to run when I boot and not see > the LxQt desktop program. > > I have tried using the Crontab with @reboot command method and the create a > .service and use systemctl to register and start it. > > No matter what I try I get " Gtk-WARNING **: cannot open display: ". This > also happen on a Beaglebone Green and happens when I use Wheezy or Jessie. That depends on what you want to achive. Ich you want to make a POS like device that is only showing your program and no window manager menu, task launchers or the like you could do: Edit the file ".xinitrc" in the standard users home directory. There is one line starting with a programm name only, should be sth. like "lxqt" in your case. Replace that line with the name of your programm to run. Disable any unwanted background programs by commenting them out with a '#' in front or deleteing that line(s). Before that you should prepare your program to run full screen by setting the size of the main screen to exactly matching the dipslay size, e.g. for a vga display you use 640 for the width and 480 for the hight. You could additionally block each movement of the main window. That way you have a one program only device. If you end it, X, the gui system, is shut down. There may be other things to watch and handle, maybe you need to make the cursor invisible or force the main window to stay on top. Or you may want to add a "shutdown -ph" or similar directly after your program in ".xinitrc" so the os of the device shuts down if the user end your program. HTH, Marc -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
On Mi, 2017-01-25 at 08:26 -0500, Paul Breneman via Lazarus wrote: > On 01/25/2017 08:09 AM, zeljko via Lazarus wrote: > > You cannot run an X11 application without running X11 server. That's > > wrong. If you need headless server gui app then you can use xfvb for > > such purpose , or normally run X11 wm and then run your app there. > > Or switch to a Raspberry Pi and use https://Ultibo.org ? Maybe Ultibo > can be ported later to Beaglebone? I don't understand. Does Ultibo drive screens, does it have gui capabilities? The web site has many words but not so many explanations I get... Regards, Marc -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
On Wed, January 25, 2017 6:26 am, Paul Breneman via Lazarus wrote: > > Or switch to a Raspberry Pi and use https://Ultibo.org ? Maybe Ultibo > can be ported later to Beaglebone? > Beaglebone is more "open" hardware than pi but I guess that's another topic. The price of pi certainly is attractive compared to beagle bone -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
On 25.01.2017 11:40, Ed Murashie via Lazarus wrote: No matter what I try I get “ Gtk-WARNING **: cannot open display: “. This also happen on a Beaglebone What am I doing wrong and how can I fix it? Do you *want* a GUI ? -Michael -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Running an app on boot
I want to thank everyone for their comments and suggestions and give a summary of what worked for me. First my background and hardware I used. I am an electronics engineer with experience in C with PIC and Cortex M3/4 ARM processors and windows with Visual Studio. I had two weeks to learn enough Linux, BeagleBone Black and Lazarus to create a demo of a graphical thermostat using a BeagleBone Black Rev C and the 800x480 5" SEEED Studio LCD with resistive touch panel. What I finally did was the following: 1. Read most of Exploring BeagleBone by Derek Molloy. A great book that starts with very little knowledge of Linux, electronics and the BeagleBone and yet you wind up learning all the different type of programming methods including QT & GTK+ and interfacing to hardware. 2. Learned Lazarus and familiarized myself with Pascal which I learned 20+ years ago by watching the excellent School Freeware Pascal and Lazarus YouTube videos also at http://www.schoolfreeware.com/Free_Pascal_Lazarus_App_GUI_Tutorials_With_Example_Code_.html 3. Update the BeagleBone operating system to the latest Debian Jessie with the LXQt desktop. This is well documented at http://beagleboard.org/getting-started 4. In Lazarus, I set the Form properties BorderStyle to bsNone, the WindowState to wsMinimized and the FormStyle to fsSystemStayOnTop and built a simple application with buttons, pictures, labels, etc. Clicked on Build to build my program. 5. In LXQt I set the startup application to run on boot by going to Preferences, then LXQt Settings, then Session Settings and finally Autostart. Clicked Add, gave the startup a name and then browsed to the Lazarus executable I built in step 4 and left the Wait for system tray box unchecked. When I rebooted the system powered up into the application with no log on, task bar, etc. Next I am going to explore a stripped down operating system, X11 and fpGUI to see if I can speed up the bootup time. Thanks again, everyone who responded to my inquiry, Ed -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org http://lists.lazarus-ide.org/listinfo/lazarus
