Programming :: Draw To Screen Without Using A GUI / Xwindows?
Mar 10, 2010
I am very new to Linux and I hope someone on here can provide some help.
Goal:
I am am developing an embedded application on Linux 2.6 that will hopefully run without a GUI. There will be no user input just simply displaying information to the user in a graphical form. I will be drawing the screen in C and outputting this to the display.
Problem:
I don't know how to draw to the display? From reading and talking with others, I think I can write to the frame buffer and that will output to the display, but I am not sure this is rite. If it is correct, can someone explain how this is done? Is there another way to draw to the screen without using the windows API?
I am looking for a way to draw on the screen in X Windows using c++, the GNU g++ compiler. I don't want to mess with requirements so just how to draw in x windows. Can it be done with g++ or is there something else I need to use.
I have Wacom Bamboo Fun Pen & Touch pen tablet and I'd like to use it to draw on the top of the screen.. For example if I have Evolution opened on the screen, I want use my pen tabled to draw with freehand on the top of Evolution. Did you understand? Is there any small application which allows to do that?
My power just flicked off then back on and when my desktop booted back up and I ran startx it loads xwindows into screensaver mode and it's all jacked up, I can't get out of it, no way to log out of xwindows either, only way to shut it down is by killing the processes so how do I clear all xwindows cache or what not so this will stop happening because of right now im locked out of xwindows.
Following on from my issues with QSplashScreen, I am wanting to investigate the QPainter class(es) some more.
Code:
How would I best achieve this:
- Draw some shapes and gradients with QPainter/QPen etc - Create a splash screen out of it - Display SplashScreen. I cannot find anything that doesn't involve
Code:
I am comfortable making splash screens out of images, but now I want to try drawing one myself.
I have this function that is supposed to print draw the first image from a function then hide the rest of the images using 'display: none' however for some reason the boolean test does not seem to work on one of my servers however it works on another, is there some php.ini setting I am missing or can you see any issues with the following code:
I am accessing the SUN server from my linux box through the command ssh -X username@computer_id through i could run the programs I am enable to get xwindow applications.
after playing games using WINE, I noticed that the system went Black screen of death.
I had to hard boot the system and now system is hanging. However, I can ssh into the system from another machine so I know only X windows hung.
I can log in using NX client without any issue, but can not log in from the console.
This is the entry from .xsession-errors: GNOME_KEYRING_SOCKET=/tmp/keyring-4P86Nb/socket SSH_AUTH_SOCK=/tmp/keyring-4P86Nb/socket.ssh Window manager warning: Failed to read saved session file /home/stranger/.config
I downloaded the demo for RHEL Server 6. I'd like to get Xwindows going, but have been thwarted thus far. edit /etc/inittab file and change the value from 3 to 5. That didnt' work. There's an X11 directory with a file called 'prefdm' that has a bunch of code in it that I have no idea what it means. how to get X windows to start?
Sorry about the newbie question(I haven't used UNIX since college) I've just been given control of a new CentOS server which is running in another country. I can connect via Putty from my windows desktop but how do I connect to it via a GUI (X, gnome, KDE???). what do I need to setup on the server and 2. what (pref. free) software do I need on my windows PC? (I take it putty won't support a GUI)
There is something wrong with the Xwindows start of my centos5.4 ( 2.6.18-164.el5 X86_64). After several times to try to start the Xwindows, there is a warning message as following:
gdm[5917]: The display server has been shut down about 6 times in the last 90 seconds. It is likely that something bad is going on. Waiting for 2 minutes before trying again on display :0.
I just downloaded and installed netinst version debian 6.0.2.1. I've had ubuntu before, and several usb live versions...but I really wanted to learn how linux works, and it was suggested I get debian. I've been unable to get anything accomplished, other than the basic install. Can't get gnome, or xwindows. Seems to me like I need more repositories. Need a Desktop! But mostly, I guess, I need a browser so I can hook up to here!
My computer is: Dell Latitude 2100 2gb ram Broadcom BCM4312
I tried to get Xterm. Went su, then apt-get install xterm...it's able to 'read' everything, but then no matter *what* I try to install, I get this same answer : E: Unable to locate package xterm
So I research, and it seems like I'm lacking in repositories. Here's my sources.list. I made a backup. I'm having to *type* everything in, on this computer, until I can get a browser working on the linux machine. So if there are typos I have ethernet cable hookup. I know from past experience sometimes this broadcom wireless card can be a problem. For now, I just want *anything* to work, and get some kind of hookup, so I can finish installing. I've reinstalled 3 times, with iso...
Here's my sources.list. Until I hear from one of you'all, I'm gonna look for a better one, and then vi edit it in here...
I have system problem about my Ubuntu 10.04 system. after I boot my Ubuntu, The login box is missing from gnome screen. I could not login my graphic system. I can use the command line by ctrl+alt+f1. I used sudo /etc/init.d/gdm start try to restart the xwindows the output isgdm already started I try to
stop gdm start gdm
then the xwindows restarted, but still missing the login box I also try to use
dpkg-reconfigure xserver-xorg
reconfigure the server, but unfortunately there is no change after I restart the genome, I could still not see the login box I am confirm that there are additional spaces on my laptop. I can also enter the graphic system on safe mode by startx command.
Sometimes I use vnc server and start desktop. The memory use rises about 2gb during this. I need to be able to turn off the xwindows after I shutdown vnc without rebooting. Is there a way to do this?. And I don't need to know how to disable at boot thats not what I need to do.
I am having a problem with the xfs font server and the Xwindows environment. I'm using the RHL9 kernel with RTLinux, the application has been running fine for years on multiple systems, but recently we changed CPUs and now I'm periodically getting microscopic fonts (1 out of 5 reboots). The other times the fonts come up perfectly normal. I've tried changing settings for xfs and XF86Config but nothing seems to work. I've checked the system logs but haven't found anything. I'm running out of things to look for.
Does anyone know an application that can draw UML graphs automatically from Java code for linux platform. I've tried startuml, but in doesn't work very well.
I tried (unsucessfully) to load the alpha version of Ubuntu 10.04, & now my comp will not even load XWindows at all. I am trying to reload Ubuntu 09.10, (i have it on a flash drive), but cannot even get the thing mounted properly. The error i get is Disk devsdb invalid partition table
i am using Kubuntu 9.04 with KDE4 installed. I created some bash scripts and used Kdialog to display the graphical items and other things, only the progressbar in Kdialog, I am unable to use. I read the tutorial in KDE's website but still it shows me an error saying "ERROR: Couldn't attach to DCOP server!".
I need a program (to draw or paint patents like the example below Example: http://www.google.com./patents?id=-K...page&q&f=false
I remember that the Word version of Windows XP had tools to create drawings but I can not find (or help) equal tools in Ubuntu Ooo. Also, Windows has the "Paint" program that I used (pasting Word drawings) to erase, create mirror-effects, etc
Can somebody recommend me a good program (not CAD way) for simple drawings for patents?
if this isnt correct place to ask my question, forum seems large and im not familiar with it yet. I would like to draw to windows with conky. I allready have an idea with launching conky ~/. config1 & conky ~/.config2 and this should work but is it possible to have 2 conky windows without launching second instance of conky ?
I have two opensuse 11.3 first with x86 second with x86_64I have connected the KVM and Scroll-lock button works doing "xmodmap -e 'add mod3 = Scroll_Lock'" in a terminal windowIf I do Ctrl+Alt+F1 to go to the console in both computers, pressing Scroll+lock twice works fine to change between computers but Scroll-lock twice don't works in XWindows runlevel.
I have a card project in OpenOffice Draw. In this project is a bitmap with the year 2009 embedded in it. I want to change that to read 20 and I can place the current year as a text layer on top of it.
I have a grid laid out on this bitmap, and I have overlaid text information such as date, time and frequency.
I got hold of the bitmap and cut it, leaving my data there but the form behind it missing. I pasted that into gimp and did the editing, saved it as a .bmp file and loaded that into Draw. I copied the bitmap from this bmp file and pasted it back into my card project.
The bitmap is now sitting on top of my data and I want to send it to the rear so my data sits on top of it.
I can not find a single reference to how to send layers to the front or to the back in OpenOffice Draw.
Launchpad.net is a way to get help online, but I am completely lost on that site, so I am asking here on the Ubuntu forum.
