In Qt i don't want to create button,label or else in design like drag and drop, but i want to create them with using code, so anyone can share the tutorial links for me about this code lessons please ?? sorry in advance for my bad question
I loved these video tutorials. Covers an awesome introduction into basic stuff, but a lot of advanced topics, too. I realize that your question includes a pyqt tag. Qt is really easy to handle with C++ though, especially for basic GUI programming. So if you don't absolutely have to use Python this is really worth getting into. On top of that, the python and C++ interface for programming Qt have a lot in common. So in any case it would not be a waste of time. Next time, take 5 minutes and search the web a little. There are tons of awesome tutorials out there, that are just a few key presses away using the search engine of your trust.
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I am new to Qt in general, and I have been playing with it to get to learn about it since I have to develop a very specific text editor.
I want to know if anyone could help me understand which one is better (or the most indicated) for the development of a rich text editor. I have worked before with C and C++ but Qt Widgets seems like a very step hill for the time being and I am completely new to javascript in general.
Some of the settings that I would need to implement on the text editor for better context are:
Look for the user to be always connected to internet.
Transfer and receive data from another program.
Grant read only to the opened files and then permission to write on them when a button is clicked.
Has to work on linux and windows.
Needs to look great.
My context:
So far I have done a few little applications and even a little rich text editor on Qt Widgets, but since I was having problems with the GUI implementation that I wanted, I started looking for a way to solve it and found that Qt Quick might be the solution.
I have been trying Qt Quick, and for now on looks great, but I do not know if it has the capabilities to do what I have explained before. Or if it is better to use one or another.
I decided to create a new post since the one that I found looking for something similar is from 2014.
Also, the text editor for now only needs to work on desktop, but in a future might be on other devices and embedded systems.
i am a hobby programmer with very little experience in web programming, i devote an average f 20-30 hours a week, but with summers coming i have some free time to experiment and learn. could anyone please tell me, whether a framework like (Kohana/cakePHP/CI) should be used or directly a CMS tool like drupal/joomla should be used to make a website something like stackoverflow, on a smaller scale though.
Thanks for your help.
It depends on what you want to learn. Depends on your goal.
Is it webdevelopment you wish to learn? CSS? Webdesign? Programming? Building sites?
If your goal is the site itself, I would suggest to start high up in the stack: use a ready-to-go CMS, such as Drupal, that gets you going fast. And that offers a (production ready) result in a few hours. Your downside will be freedom: sure Drupal can do a lot, so can Wordpress. But unless you move down in the stack (develop addons and such) you will have to do with what you are offered: ready made components that work according to the authors wish. Possibly not your wish.
If your goal is to learn webdevelopment in a more general way, you should start lower down in the stack. Ruby on Rails or Django are probably the best options. Simply because of their vast resource on newbie documentation. You will learn programming along the way there too. Within a few days you will have built a site according to your exact wishes (obviously, your milage may vary, depending on the wishes:)).
If your goal is development of software, Python and Ruby are most probably a good start too: both are cross-platform, have good newbie resources and offer great documentation. Both are really well (opinions may differ on this) abstraction and object orientation. They will form you into a good programmer, simply by their nature.
There's a Stackoverflow clone called Qwench that is free.
(search stackoverflow for open source stackoverflow clones)
and one built on drupal http://drupal.org/project/arrayshift
Wordpress can act very much like Stackoverflow with a proper template. See here: http://p2theme.com/ (demo here: http://p2demo.wordpress.com/). Actually you can than start editing the theme (.php files) and make it behave more and more like Stackoverflow (with reputation system etc. which should be easy to implement). This way you won't be reinventing the wheel and have a good headstart.
I personally use CodeIgniter and love it. I would recommend it to any novice looking to further their knowledge of object oriented programming, and any veterans looking to get their projects off the ground quicker. I am not going to go into great detail here, because I know Kohana and CakePHP are similar, and its mostly opinion. CI does have great documentation though.
I think learning the most common CMS is going to be hugely beneficial to you, tons of sites and companies use WP/Drupal/Joomla/Etc and it really can't hurt to understand them. These projects are very large, so you don't necessarily need to know their internal operations 100%, but you should know enough to be able to install, customize and get a site up and running fairly quickly.
Everyone has their favorites, but I invite you to try them all and see what moves you. It will NEVER hurt to learn something and not use it, especially with some extra time.
There are times to use a packaged CMS and hopefully be able to theme/customize it to what you need quickly...then there are times you will want to code a special case by hand using a framework.
Just understand the depth of the project you want to undertake, because starting from scratch is fun and rewarding, but once you get neck deep in code and get stuck its easy to lose motivation all together.
I would suggest learning the basics of HTML before diving in to using a content management system. The importance of understanding the basic building blocks of websites can't be overstated.
There are loads of resources online to learning about HTML - once you've got some experience with that, you can look at CSS, Javascript, and server-side scripting languages. Knowing the basics will help with using any content management system.
Joomla / Drupal are a good place to start with content management systems, as is Wordpress, but you'd be much better off learning how it works underneath (at least to the most basic extent) before diving in to anything else.
If you're already a programmer you won't find it too hard, but it's definitely worth doing.
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What is the shortest path between zero (ie no flash related development software on my computer or information about where to obtain it or get started) to running a "hello world" ActionScript?
I'm hoping for an answer that gives step by step instructions about exactly what software is needed to get started, an example of some "hello world" code, and instructions for compiling and running the code.
I've spent more time than I think should be necessary researching this question and not found much information. Hopefully this question will be found by programmers like me who want to get started with Flash/Flex/ActionScript (After my morning of researching I still don't even know what terminology to use so I'll just throw it all out there).
ActionScript tutorials I've found are focused on programming concepts, ie logic, branching, OOP, etc, and some even have code examples to download, but not a single one I've found explains how to compile and run the code. They all seem to assume you have an IDE standing by but no knowledge of programming, exactly the opposite of the position I'm in.
Here are the most related SO questions I've found:
What is Adobe Flex? Is it just Flash II?
Getting Started with Flex 3 UI ActionScript Programming
https://stackoverflow.com/questions/2123105/how-to-learn-flex
If you're a programmer, go down the Flex route. Flex is completely free to use and you can get a Hello World SWF in no time. You can use the FlexBuilder demo or the freely available but sometimes less helpful FlashDevelop. (Actually I think the only problem with FlashDevelop is it doesn't have a good debugger, or didn't, last time I checked).
That said, I would strongly advise against using Flex, Flash, or any Adobe product really, because in my experience Flex is a horrible API and ActionScript is a horrible language. Flash is still the best platform for RIA just because of its penetration, so if AJAX can't solve your problems by all means learn Flex. Certainly it's not impossible to work with. But Flex is like the Java library re-interpreted by a team of people who took one Java class in high school.
Anyway,
1) Get the FlexBuilder demo from Adobe: http://www.adobe.com/products/flex/flexdownloads/
I'm pretty confident it comes with the Flex SDK.
2) Start a new Flex project.
3) A basic MXML program is already written. Add <mx:Label text="Hello world" /> in the <mx:Application> tag
4) Run->Run YourProjectNameHere
5) Read the horrible Adobe documentation and Flex API reference.
The shortest path from zero to displaying a "Hello World" is probably the Flash IDE. Simply start the program up, enter something in the first keyframe like
trace("Hello World");
on the timeline and then click publish.
Of course you have to pay for the Flash IDE and if your just doing pure programming and not drawing complicated animations then there are free alternatives. The one that I and a few others keep pushing is Haxe. A free opensource language based on AS3 that can then be compiled and target to different platforms including Flash SWF. I use the free program FlashDevelop for coding and which supports Haxe.
An example (taken from the http://haxe.org/doc/start/flash website):
Define/create this class in a file named Test.hx
class Test {
static function main() {
trace("Hello World !");
}
}
Create the file compile.hxml in the same directory with the following content.
-swf9 test.swf
-main Test
Execute the compile.hxml, in FlashDevelop just right click on it, and you are done
That is all there is to it :)
I would recommend you to use FlashDevelop + Flex SDK.
It is free, easy to use and nice for small and big projects.
Simple answer to your question:
I learned everything I needed to know to get started programming in Flash at http://www.gotoandlearn.com
Most of his free 20-minute video tutorials use the Flash IDE, but you can download a free trial that'll work for a month if you are just starting out. The first half or so examples he has are in AS2, so I'd disregard those unless you know you'll have to work on older projects - start with the "Using the Document Class" video. It's funny because he goes from a really shitty coder showing basic examples to a pretty advanced developer with nuanced tutorials. Watch his stuff and you'll get a good sense eventually of how this stuff works in Flash.
Another option that you have available to you is Adobe's "Flex in a Week" series - if you are more into programming and understand OOP concepts then maybe you'd rather not mess around in the Flash IDE. Jump right into Flex, which you can download for free for 60 days (or forever free if you're a student or unemployed) and then watch the videos here, they'll catch you up to speed:
http://www.adobe.com/devnet/flex/videotraining/
Between those two links you should have enough free video training to qualify you to do work in the field. Use what you learn there and practice and you'll be good at it in no time.
Cheers,
myk
This should give a good start on learning this technologies:
Adobe Flash Tutorial
Adobe Flex Video Training
Adobe ActionScript Tutorial
also, I know that adam flater and a friend of his were writing a blog around the time that flex3 was released called 'learning flex from scratch.' It might be a good starting point.
There's a short Hello World tutorial on Senocular's blog, which deals with compiling AS3 code... might be a useful starting-point?
http://www.senocular.com/flash/tutorials/as3withmxmlc/
I want to start developing Flash and Flex applications so that I can put all of the concepts floating around in my head into action. The problem is that I have never done any programming nor dealt with code...ever. I have worked in the graphic design industry and a lot of the storyboarding features in Flash are intuitive to me. Additionally, I've gone through some tutorials on Flex through the Adobe website, and although I pick up on the concepts well and can do the assignments, I'm not fully understanding the language (it's only been a week though).
My question is this: Should I just keep going with the Flex tutorials and work my way through MXML and ActionScript? or should I start by learning a different base language first? I've learned several languages in my life (Spanish, French, Italian) and with those, I didn't really understand the language until I jumped in, went to the country, and just struggled through it. Is it the same with MXML and ActionScript? Should I just struggle through it? Or do I need a base first? If I need a base, what would you suggest?
It depends on where you want to go.
If you're aimed towards making "application"-like content - that is, buttons, pulldown menus, tab and accordion frames and so on, then probably you should keep on with the Flex tutorials. Flex is a framework, remember - it will spare you more of the gritty details if what you want to do is aligned with it.
If you want to make more generally expressive content - games, unique menus, highly interactive experiences and the like, then learning Flex would probably be a sidetrack. You'd be better off focusing on ActionScript itself.
Since you're starting from zero, you should also consider how far you plan on going. If you hope to eventually be able to handle complicated, heavily script-driven content, then you'd be better off learning ActionScript 3 and pretending AS2 doesn't exist. However, if you need to learn "enough" scripting to get the job done, but you don't plan on getting married to it, then you might prefer to do the reverse. AS2 is much more ad-hoc, and less strict. It has more whippituppitude, as they say. But for complex work AS3 is far better.
As for learning other languages, I'd say not so much. AS2 is very similar to JavaScript, and AS3 is very similar to Java, but you'll understand much better how to make good Flash content if you learn the scripting together with the authoring tool, and you'll come away more able to grok Flash's internal structure and the attendant possibilities and limitations.
JavaScript is a good language to look at if you want to learn something similar to ActionScript, but if you are really interested in using Flex and Flash, you might as well just dive into it.
As you get more experience you'll find that you will also be able to read code in other languages and learn from examples of core concepts in most popular languages. Like spoken languages, the rules are pretty consistent, the grammer and vocabulary just change.
I have always found working through a language and researching when I have specific questions makes the process faster, plus I tend to remember the things I struggled on a little better.
I currently do a lot of work in ActionScript 3.0, I also love to program in Java. Is JavaFX perfect for me? What is the general feeling on JavaFX, will it become a power house, or go down the same path as Java Applets? Could the designers I work with become comfortable with JavaFX to the same extent they are comfortable with ActionScript and JavaScript?
Just wanted to add my $.02... I've been working in JavaFX for the last 4 days on my first little side-project using it. As some background, I've been programming professionally for about 9 years, starting with C, and have been doing Java and C#/.NET for the last 6 yrs.
IMO, JavaFX its way more frustrating that it should be. Here are some gripes:
The syntax is just odd at times. It could easily be more like Java, since its JavaFX. But the syntax isn't an easy transition from Java.
The order of items in a .fx file actually matters, which means you run into stupid circular reference errors, and "oh you can't use this variable yet because it hasn't been initialized" problems that the compiler should handle with ease, but doesn't.
Random things just don't work. Actions/events on Swing controls don't always work, for example SwingSliderBar's onKeyPressed/released don't seem to be called.
Error handling is just bad. If an exception occurs that isn't handled, there is no real way to tell other than the Java console, and UI elements start to react funny. For example, make a SwingText box and bind its value to a variable. Now trying to edit the value in the text box will throw an exception because you cant edit the bound variable. However in the UI, the text box just starts having funny things happen. some characters only 1/2 paint, sometimes backspace does nothing, sometimes it deletes a character, sometimes you can press 2 keys ont eh keyboard like "1" and "2" and the text box will end up having "21" entered in it instead of "12", etc...
Although my absolute #1 problem with JavaFX development right now is Netbeans. It is pathetically bad at JFX. Can't debug, errors display wrong in the IDE (I've had it flag comments as errors!), the intellisence only works like 40% of the time, event he code templates preprogrammed in the IDE for drag & dropping controls aren't correct. I forget which one, but one of them drops a "&" at the end of the inserted code that is never valid and always has to be manually deleted... its just plain awful, and is unacceptable for a company like Sun.
Another gripe is general documentation. Its just lacking. Somehow the JavaFX API doesn't even come up as the #1 search result on google when searching for methods/classes. Tons of "examples" out on the web don't work any more as every version has major refactoring changes, and classes removed or renamed.
Overall, I give JFX a 4 out of 10. I want to like it, but JFX 1.1 just doesn't cut it... its definitely not what I would consider "production ready".
A resounding "meh".
When I looked at it a year ago, they had a one-way SVG to JavaFx conversion tool. Great, so you can author your visual content once, mark it up with a lot of behaviour, and then the next time you want to make it look good, then what?
If you take a look at this tutorial you can see what I mean. We're drawing stuff by dragging shapes from a palette into source code. OMGWTF. I am not showing that to my graphics department.
I hope I'm wrong about JavaFx, but I don't think they get it. Please, won't somebody at Sun give us a presentation layer that doesn't have its tentacles inextricably intertwined with code?
I left my last job to move from Java to .NET development.
There were a number of reasons for making the move, but the single biggest reason was that I was sick and tired of trying to build 1st class UI software with Java & Swing. It has been six years and I'm so glad I moved on. I see no reason to believe that Sun finally understands UI development with JavaFX.
I am convinced that Microsoft is finally in the process of giving us a platform to build rich interactive applications in the browser. I say that after having built commercially available software which was delivered as a Netscape Plugin 13 years ago, followed by ActiveX controls and Java Applets, and seeing all of these platforms fail to become ubiquitous in the enterprise for one reason or another.
I realize that Silverlight 2 is still lacking in depth and maturity, but Microsoft has shown me enough commitment at this point that I believe it will be the dominant RIA platform in a few short years - at least for projects which require a "real" programming language. I am sure Flash et al. is not going away anytime soon, but Flash is not appropriate for the kinds of software my company builds.
The icing on the cake for me is the fact that I will still be able to use Visual Studio, C# and a large percentage of my current code base (the core engine which is entirely separate from the UI). Of course, if you are coming from ActionScript, this would not help you.
One more important point is the fact that Silverlight and WPF share so much in common. Our plan is to share a large amount of implementation between Silverlight and WPF versions of our software. It is only a matter of time before WPF is the standard for Windows applications – I don’t know whether that is a couple of years or ten years, but it will clearly happen over time. Being able to target the most popular browsers / OS’s with Silverlight and Windows from the same code base is a tremendous advantage IMO.
If you know Java then moving to C# is a piece of cake. And unless you are using one of the nice (not free) Java IDEs, then even the free versions of Visual Studio will be an improvement over what you are used to. The hurdle will be learning the new way of doing things with XAML – but it’s some pretty cool stuff so you might actually enjoy it.
Although it appears fairly powerful in terms of capabilities, I'm kinda blah about JavaFX because of its structure and implementation. It seems like a really half-hearted attempt at getting into the Flash/Silverlight market. Too scripty.
I would argue in favor of going the Silverlight 2 route, but I'm primarily a C# developer so I'm a little biased there. If you don't like that route for whatever reason but still want a richer UX for your users, I'd suggest Flex; it seems much better organized than JavaFX to me.
Just my two cents on the subject.
If you know Java but want to do the stuff you thought was only feasible in Flash - then yes JavaFX would be good for you.
Without a doubt it's going to be much more easier to merge your Java knowledge with the design stuff.
And I believe the tooling will only get better which will make it simpler to use.
Unless you’re working on an internal app I would stay away from it. Users generally don’t want to have to deal with another program that accomplishes the same thing as Flash. I don’t think its install base is large enough yet to make it convenient for end users.
I've been developing Flash Applications with Flex for about 2 years now and I decided to give a try to JavaFX because we are constantly getting user complains that they cant use the applications from their IPhones (and I love Java).
That's one strike for Flash (no wide mobile support).
To be honest I was quite impressed with JavaFX (in a very bad way).
The documentation is incomplete.
The script is simply awful; its this weird hybrid between JSON and R with a feeling of a Java-deja-vu.
I spent the first 3 days painting polygons and making gradients with CODE... WTF!!
I tried to convince my graphic department to try it and they simply don't seam to grasp how the production suite is supposed to work, they keep complaining that Flex skinning is way easy and looks better in the end (Which is absolutely true).
The "CSS support" is simply a bad joke.
It generally feels like a mediocre attempt to offer an option for RIA frontend.
I can only think of a couple of good things about it:
It can be run from an IPhone / IPad and almost all mobile devices.
You have access to all the Java code you want which is great considering the limitations that ActionScript has (no overloading, no private constructors, etc). This is a great thing for us the programmers, but lets remember for a second that this is a frontend/presentation technology... that means that users will have to actually see the thing, so if it doesn't look good and have cool animations / effects they wont dig it.
The Script is way less verbose that MXML files are (with the cost of being unintelligible).
Talking about performance... Flash Player is this huge green blob that keeps growing and growing until no RAM is left compared to how JavaFX runs (JVM rocks! unfortunately this has nothing to do with the actual JavaFX API its just that the JVM... well it rocks!).
It has this cool feature where you can drag the applet outside the Web Browser.
In the end, Im happy I have an option to go mobile but this is light years way of the matureness that Flex/Flash has accomplished regarding RIA applications. The future of Flex/Flash as a wide distributed web technology is not clear (it may end up being used only for annoying banners and online games), no one wants to depend in a close technology as the Flash Player is, that's why the whole Web community is striving to get Flash out of the picture (HTML5 video support, No Flash Player for Apple devices, etc). So an attempt to have an open one is always welcomed, it's just that JavaFX feels like this incomplete rushed beta version of something that Sun felt obligated to come up with in a weekend during a bad hangover.
I Hope this is useful to someone (and offensive to someone at Sun/Oracle =p ).
I've spent the weekend 'playing with it. I see nothing useful in it. It's a iteration of swing / awt. I guess it will be nice for mobile devices but beyond that its nothing useful.
Ideally I'd like to use flash but find it painful to intergrate with a backend of any type.
Well, the syntax of both ActionScript and JavaFX seem to share a lot of similarities, so maybe "Yes".
I'm learning JavaFX script at the moment and I actually like it. But what I don't like, and is maybe it's biggest drawback, is it's awful documentation, which is often not up to date or incomplete.
I've been working on a JavaFX application for several months now. Personally, I love the language. They seemed to me to have made some very smart decisions in choosing the syntax and language constructs (I can bore you with a list if you'd like). I've been programming in it for a few months now and it seems like a very efficient and even enjoyable language to program in.
I think its best use right now is for desktop applications and/or applications deployed through webstart. On the desktop it has a rich set of features and can still make use of the other features of Swing and the rest of Java. From what I hear applets are still slow on some systems, and without Android support the mobile capabilities are non-features. The applet/mobile/TV/web support seems to me more like a bonus for desktop developers then as key features that would get you to use the technology.
So it really all depends on what you plan to use it for. If you are building desktop applications that you want to run on the Java VM that can make use of easy multimedia and rich ui controls, then I think there are good reasons to look at the language. WebStart has improved quite a bit and makes for a nice deployment tool. If you are looking to build web applications, then it might be interesting, but for now I'd say HTML5/ajax are more relevant (you might want to look at ZK in this case). However even with HTML5 ajax has its limitations, and if you find yourself running into them then JavaFX may offer you options. For mobile platforms it won't be relevant until there is stable Android support - in that case I'd just stick with the Android platform itself for now.