[solved]qwt programming problem( newbie questions about compiling)

Hi all:
I'm trying compile a qt program that use the technical widget qwt
the program is an example from qwt project
my .pro file is like this
TEMPLATE = app
TARGET =
DEPENDPATH += .
INCLUDEPATH += /usr/include/qwt
CONFIG += qt
LIBS += -L/usr/lib
# Input
SOURCES += simple.cpp
but make also gives these errors:
undefined reference to 'QwtPlot'
etc etc
what is wrong here
Last edited by elflord (2009-03-04 12:29:33)

solved by adding -lqwt in LIBS

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Newbie Question About Compiling

Hi,
I have a .jar file. Extracted it, because I needed to change a string value in my Blah.java file.
How do I recompile in JDeveloper?
Thank you very much.

Brenden,
Thank you, but when I import the Project is empty.
Time is of the essence to me right now, so I tried to compile via command line. Since I just changed one file, I thought I need to compile only that file, right? Wrong... See the errors below.
Looks like I need to compile the entire code-base. How do I do that via command line? Please, help. Thank you,
C:\jdk1.5.0_06\bin\com\Blah\im\wsapi>c:\jdk1.5.0_06\bin\javac BlahServiceClient.
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symbol : class SegmentSpec
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Basic Questions About Compiling Source

Hi!
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ChangeLog
README
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LICENSE
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install
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Xcode 3.2.4
Python 2.7

sudont wrote:
I have some very basic questions about compiling source on 10.6. BTW, if the unix discussions still exist, they've hidden them pretty well, so I hope I'm in the right place for this!
This is the place for UNIX discussions. If you have developer-related questions, there is a forum dedicated to that as well: Developer Forums
First off, you simply cd to the source dir, wherever it may be - in my case ~/Downloads/source/ - and during the install process, everything will be installed in its proper dir, right?
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How do you know which compiler to use? There seem to be several: make, gmake, gcc, g++, etc...
The make file will figure that stuff out.
Once you do figure out which compiler to run, the process is supposed to go like this, right?
./configure
make (or whatever)
make install
Yes, with the addition of "sudo" before "make install" because "/usr/local" is owned by root.
But this doesn't always work for me. For instance, I'm trying to compile 'arm', but it doesn't seem to have a 'configure' script.
$ ls ~/Downloads/arm
ChangeLog
README
armrc.sample
setup.py
LICENSE
arm
install
/src
arm? You mean "arm (anonymizing relay monitor) - Terminal status monitor for Tor relays." You really don't want to be messing with that stuff. The only people involved with Tor that are trustworthy are US Navy intelligence who have their own uses for it. If you don't understand it as well as they do, best stay away.

A question about compiling

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r035198x wrote:
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Providence, RI

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Thanks!!

But, I really want to learn coding and not just take the easy route by using Xcode.
The simplification of using Xcode may have been a bit exaggerated throughout this thread. You will still learn how to program full-on by using Xcode -- it's not like you're taking a shortcut or anything. Well, technically speaking, you are, but Xcode is the expected way to develop on a Mac nowadays -- it's how Apple expects you to develop and how most people are doing so. Should you choose, you can taking a deeper dive into the inner workings of compiling and whatnot by using a text editor and the Terminal, but keep in mind that the extra complexities here could complicate the more important overall goal of learning the basics of how to program. There is absolutely nothing wrong with simply using Xcode for the novice part of your programming days. In fact, it's probably the path I would recommend. Some here might suggest that it is beneficial to learn the intricacies of compiling through the Terminal and whatnot early on, and they are right -- it is beneficial, but the benefits of taking a route (at least for the time being) that allows you to focus on the more pressing issues of learning how to program without having to delve too deeply can be just as beneficial. After all, it's not like you can't go back and learn how to compile via Terminal later on -- that's what I've done (or, rather, am in the process of doing).
I always thought Terminal was something not to mess with.
Not so much. Like most things in programming (or life, for that matter), the Terminal is something not to mess with +if you don't know what you're doing+. Basically, it breaks down like this. The GUI that Apple has created for you in Mac OS X (by GUI I mean "graphical user interface" -- the icons and windows and buttons and so forth that you use to perform tasks on your Mac -- in other words, everything outside the Terminal) is geared toward the common user who does not need to access advance aspects of the system's functionality. Consequently, it makes common tasks much simpler to perform, but in the process it hides some of the deeper levels of the system's functionality from the user. This is a good thing, since most people wouldn't know what to do with this functionality and would create problems for themselves if they did have easy access to it. However, for some users who know more about the inner workings of the operating system, there needs to be a way for them to access this functionality, so that they can do certain things (like accessing certain files and performing certain tasks) that they would not be able to do using the Mac OS X GUI -- that's what the Terminal is for. It allows the user to operate the system on a lower level. In other words, it allows you to get closer to the operating system. This is good in a way, because it allows you to perform tasks that you wouldn't otherwise be able to perform by giving you more control over the operating system, but it is also bad in a way, because it can allow you to mess up some of the deeper aspects of your system if you don't know what you are doing. Most people leave the Terminal alone for this reason, and because they have no need of it, but if you want to be a good developer, you're going to have to work with it sooner or later.
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The Mac OS X operating system is based around Unix, so when you are communicating more directly with the operating system by using the Terminal, you are interacting with its Unix core. For this reason, using the Terminal goes hand in hand with understanding Unix. So, if you're going to want to use the Terminal, then I recommend you get a good book on Unix to teach you the basics of Unix commands and shell programming and whatnot. Any book on Unix will do, since more or less everything you learn will be applicable to the Mac OS X's Terminal, but there are a few that are specifically directed to Mac OS X users, and that always makes things easier. Most of these books aren't updated to cover past Tiger, but this really doesn't matter (someone correct me if I'm wrong). A few examples are O'Reilly's "Learning Unix for Mac OS X Tiger" by Dave Taylor or Peachpit Press's "Unix for Mac OS X Tiger" by Matisse Enzer. Also, the book "Unix Programming Environment" by Kernighan and Pike is an excellent book on Unix, although fairly outdated, so I would highly recommend it, although I would recommend it as a supplement to another, more recent, Mac-based Unix book and not as your primary source for learning Unix. The skills you will acquire from these books will help you later if not sooner, so I recommend giving one of them a read at some point, whether you are planning on compiling using the Terminal right now or not.
Anyways, I hope this helped to clear some of this up for you, and please let us know if you have any further questions.

Question about compiled byte code

Howdy folks,
I have a client who wants to run an application in both
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laptop, but I don't think I want to do that. I'm assuming that the
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Well, rats.
I wrote a nice reply to your message BKBK, but lost it
because, apparently, my session timed out.
The basic jist, was that I've been working on AJAX, and have
been implementing some AJAX-like techniques at some other clients
(using hidden iframes combined with innerHTML -- I know not a
standard, but darn handy otherwise), but I couldn't see how that
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don't use cookies very often if at all in my daily coding), and I'm
a bit put off by the different browser limitations. I'd hate my
client to be chugging along, entering appointments into the
"database" (read: data being stored as cookies to be sync'd later
when the user goes online), and then suddenly run into the cookie
limitation. On top of that, if I'm reading right, IE (my client's
most likely choise of browser), will not let you know that you've
reached this limit, but will just begin dropping the older cookies
in favor of the newer ones. If I could programmatically sense this
limitation and then write the cookies to some file before
continuing that'd be geat, but since JavaScript can't write files
(that I know of) this isn't feasable. Also, if I could write a file
like that, I wouldn't bother with the cookies.
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company has a bunch of copies of it (and it's licenced per
developer and not per copy), and there are lots of folks in my
company who can help me get up to speed. That also means that I'll
probably need to write a web version of the code for when my
client's client's (does that make sense? :-) ) connect to the app
via the internet.
Anyway, I'm really enjoying everyones comments on the
subject. Can anybody think of a technique for a way around the
cookie limitations? Or perhaps another language that this whole
thing could be written in?
I really wish that I could compile my ColdFusion code for use
independant of the CF server. I know, that's not the way it works
and typically not what scripting languages like this are used for.
I suppose I could always install the developer's version of CF on
the user's local machine, write the code in CF and then just detect
whether or not the user is online and behave accordingly.

Newbie question about Premiere Elements Organizer

This is a pre-newbie – let’s say “virgin” question. If there is an answer already posted elsewhere, please send me a link.
I’m about to install Premiere Elements 9 to do some clip editing and animation from still images. This would be my first attempt to edit clip or do some animation from still images, besides using Windows Media Maker with my HS students. However, I have been a pretty serious photographer for 20+ years with 1,000’s of images which I now work on in PS CS5 Extended and Lightroom 3. I use Adobe Bridge and LR library to catalogue and organize my images. I’d like to continue to use AB / LR Library to organize my new clips and projects. From reading Bill’s posts, it seems I can use Adobe Bridge, copy my original file, resize in Photoshop, and save in a new folder to use for a Premiere project. This would seem to be most intuitive way for me to work. I already have keywords, metadata, actions in PS… etc. But I think Bill is using Premiere Pro, while I’ll be installing Premiere Elements, which comes bundled with Elements Organizer. Do I need to install or use Elements Organizer? What are the advantages/disadvantages or EO? I guess I’m a little worried about installing the programs and having EO automatically acquire images using presets/defaults that I don’t want to use as well as issues with subfolders, etc. I'm running Windows 7.
Thanks
FYI- this is a great animation project
http://www.thejohnnycashproject.com/#/explore/TopRated

ziggycat4 wrote:
I guess I’m a little worried about installing the programs and having EO automatically acquire images using presets/defaults that I don’t want to use as well as issues with subfolders,
EO doesn't do much with the files themselves, just maintains links to the sources.
For folders you are best to use the folder view in EO to move them as it doesn't keep track of folder locations when changed in Windows Explorer. From the File options in Bridge I think that is pretty much the same.
ziggycat4 wrote:
I would like to get as much input as possible on the advantages/disadvantages of using EO vs say Adobe Bride from others who use Elements Organizer.
Any insights would be appreciated.
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Photoshop
Photoshop Elements
Premiere Elements
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Bridge only seems to link to Photoshop.
Missing files can be located manually or by allowing EO to search for them.
Cheers,
Neale
Insanity is hereditary, you get it from your children

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The only reason I want to use Windows is to be able to download games from the internet that are not made for Mac only for PC and I have a few questions:
1. Doing all this installation will anything made for PC work?
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Hi Karen and welcome to Discussions,
The only reason I want to use Windows is to be able to download games from the internet that are not made for Mac only for PC and I have a few questions:
1. Doing all this installation will anything made for PC work?
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http://www.cdsfu.com/index.php?categoryID=87
another user round here had already asked about that website.
Three things about this offer are, at least to me, very suspicious:
"Microsoft Windows XP Professional Edition With SP2, Full Version on CDR"
Microsoft never has used CD-R disc (CD-Recordable) for Windows
"software that does NOT include any COA label or a sticker from the manufacturer"
There always has to be a sticker, that one puts on the computer on which the Windows license is installed and a COA label as well.
"VOLUME LICENSE INCLUDED"
A volume license, from my understanding, was only sold to companys, who install Windows on a larger scale (hundreds of computers) and for that purpose are given only one license-key for all installations.
Usually this is known as a'corporate license'.
All in all, I would personally stay away from this offer. It simply doesn't sound legal to me.
4. After everything is installed do I have to use an anti-virus?
When running Windows a decent Anti-Virus software is a must.
I want to thank you for your help as you can see I really am a newbie.
You're welcome anytime. Hope it helps.
Karen
Regards
Stefan

Please, help a newbie: Question about animating expanding containers

Hi All,
Short Version of my Question:
I'm making a media player that needs to have an animation for panels sliding up and down and left and right, and the method I've been using to do this performs far slower than the speed I believe is possible, and required. What is a fast way to make a high performance animation for such an application?
Details:
So far, to do the animation, I've been using JSplitPanes and changing the position of the divider in a loop and calling paintImmediately or paintDirtyRegion like so:
public void animateDividerLocation( JSplitPane j, int to, int direction) {
for(int i=j.getDividerLocation(); i>=to; i-=JUMP_SIZE) {
j.setDividerLocation(i);
j.validate();
j.paintImmediately(0, 0, j.getWidth(), j.getHeight());
The validate and paintImmediately calls have been necessary to see any changes while the loop is going. I.e., if those calls are left out, the components appear to just skip right to where they were supposed to animate to, without having been animated at all.
The animation requirement is pretty simple. Basically, the application looks like it has 3 panels. One on the right, one on the left, and a toolbar at the bottom. The animation just needs to make the panels expand and contract.
Currenly, the animation only gets about, say, 4 frames a second on the 800 MHz Transmeta Crusoe processor, 114 MB Ram, Windows 2000 machine I must use (to approximate the performance of the processor I'll be using, which will run embedded Linux), even though I've taken most of the visible components out of the JPanels during the animation. I don't think this has to do with RAM reaching capacity, as the harddrive light does not light up often. Even if this were the case, the animation goes also goes slow (about 13 frames a second) on my 3 GHz P4 Windows XP if I keeps some JButtons, images etc., inside the JPanels. I get about 50 frames/sec on my 3 GHz P4, if I take most of the JButtons out, as I do for the 800 MHz processor. This is sufficient to animate the panels 400 pixels across the screen at 20 pixels per jump, but it isn't fast or smooth enough to animate across 400 pixels moving at 4 pixel jumps. I know 50 frames/sec is generally considered fast, but in this case, there is hardly anything changing on the screen (hardly any dirty pixels per new frame) and so I'd expect there to be some way to make the animation go much faster and smoother, since I've seen games and other application do much more much faster and much smoother.
I'm hoping someone can suggest a different, faster way to do the animation I require. Perhaps using the JSplitPane trick is not a good idea in terms of performance. Perhaps there are some tricks I can apply to my JSplitPane trick?
I haven't been using any fancy tricks - no double buffering, volatile images, canvas or other animation speed techniques. I haven't ever used any of those things as I'm fairly new to Swing and the 2D API. Actually I've read somewhere that Swing does double buffering without being told to, if I understood what I read. Is doing double buffering explicitly still required? And, if I do need to use double buffering or canvas or volatile images or anything else, I'm not sure how I would apply those techiniques to my problem, since I'm not animating a static image around the screen, but rather a set of containers (JSplitPanes and JPanels, mostly) and components (mostly JButtons) that often get re-adjusted or expanded as they are being animated. Do I need to get the Graphics object of the top container (would that contain the graphics objects for all the contained components?) and then double buffer, volatile image it, do the animation on a canvas, or something like that? Or what?
Thanks you SO much for any help!
Cortar
Related Issues(?) (Secondary concerns):
Although there are only three main panels, the actual number of GUI components I'm using, during the time of animation, is about 20 JPanels/JSplitPanes and 10 JButtons. Among the JPanels and the JSplitPanes, only a few JPanels are set to visible. I, for one, don't think this higher number of components is what is slowing me down, as I've tried taking out some components on my 3GHz machine and it didn't seem to affect performance much, if any. Am I wrong? Will minimizing components be among the necessary steps towards better performance?
Anyhow, the total number of JContainers that the application creates (mostly JPanels) is perhaps less than 100, and the total number of JComponents created (mostly JButtons and ImageIcons) is less than 200. The application somehow manages to use up 50 MBs RAM. Why? Without looking at the code, can anyone offer a FAQ type of answer to this?

You can comment out the lines that add buttons to the panels to see the behavior with empty panels.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.Timer;
public class DancingPanels
    static GridBagLayout gridbag = new GridBagLayout();
    static Timer timer;
    static int delay = 40;
    static int weightInc = 50;
    static boolean goLeft = false;
    public static void main(String[] args)
        final GridBagConstraints gbc = new GridBagConstraints();
        gbc.weightx = 1.0;
        gbc.weighty = 1.0;
        gbc.fill = gbc.HORIZONTAL;
        final JPanel leftPanel = new JPanel(gridbag);
        leftPanel.setBackground(Color.blue);
        gbc.insets = new Insets(0,30,0,30);
        leftPanel.add(new JButton("1"), gbc);
        leftPanel.add(new JButton("2"), gbc);
        final JPanel rightPanel = new JPanel(gridbag);
        rightPanel.setBackground(Color.yellow);
        gbc.insets = new Insets(30,50,30,50);
        gbc.gridwidth = gbc.REMAINDER;
        rightPanel.add(new JButton("3"), gbc);
        rightPanel.add(new JButton("4"), gbc);
        final JPanel panel = new JPanel(gridbag);
        gbc.fill = gbc.BOTH;
        gbc.insets = new Insets(0,0,0,0);
        gbc.gridwidth = gbc.RELATIVE;
        panel.add(leftPanel, gbc);
        gbc.gridwidth = gbc.REMAINDER;
        panel.add(rightPanel, gbc);
        timer = new Timer(delay, new ActionListener()
                gbc.fill = gbc.BOTH;
                gbc.gridwidth = 1;
            public void actionPerformed(ActionEvent e)
                double[] w = cycleWeights();
                gbc.weightx = w[0];
                gridbag.setConstraints(leftPanel, gbc);
                gbc.weightx = w[1];
                gridbag.setConstraints(rightPanel, gbc);
                panel.revalidate();
                panel.repaint();
        JFrame f = new JFrame("Dancing Panels");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(panel);
        f.setSize(400,300);
        f.setLocation(200,200);
        f.setVisible(true);
        timer.start();
    private static double[] cycleWeights()
        if(goLeft)
            weightInc--;
        else
            weightInc++;
        if(weightInc > 100)
            weightInc = 100;
            goLeft = true;
        if(weightInc < 0)
            weightInc = 0;
            goLeft = false;
        double wLeft = weightInc/ 100.0;
        double wRight = (100 - weightInc)/100.0;
        return new double[]{wLeft, wRight};
}

[solved]qwt programming problem( newbie questions about compiling)

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