GUI internals, looking for turorials [closed] - qt

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There are tons of resources on how to program using the APIs of various widget toolkits but I can't seem to find much in the way of a tutorial on how to create widget toolkits themselves or how they work n detail. They are basically just black boxes to me right now.
There is some info on QT:
http://qt-project.org/wiki/Category:QtInternals
but it seems quite specific to QT and not geared towards general theory.
Could anyone point me to some resources?
Thanks for reading

There are powerpoint presentaion slides on the following link:
http://aplcenmp.apl.jhu.edu/~davids/605741/handouts/6_SWT_Programming.pdf
Also you may have a look on pdf given on the following link:
http://www.loria.fr/~dutech/DDZ/SWT.pdf

It would have been great to know which programming language you are using (or you'll use) to develop widgets.
Anyways,there is a link which shows the basic concepts behind widgets and also their creation:
http://star.pst.qub.ac.uk/idl/Widget_Programming_Concepts.html
Go through the tutorial/description to see if it meets your need.
Hope it'll help you.

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Convenient way to navigate throught views on uno-platform [closed]

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I am very new to UnoPlatform. I am trying to create a new application. Yet for some time I am stuck at creating convenient way to navigate through views.
I searched through webs and forums. I found that the best design pattern would be MVVM. Demo Apps on platform.uno seems to be implemented using this pattern as well. However some approaches i found online are not possible with unoplatform, as far as I understand it.
To give an example:
The app starts at LoginPage. On successful login I want to be taken to a completely different view with different controls. One of the approaches I found is by holding currently active viewmodel and render pages accordingly.
Is there some approach you would recommend for navigating through views? Or some material I could read to understand this concept better?
Using MVVM Light, the navigation needs to be performed using the NavigationService, as you'll find in this documentation: http://www.mvvmlight.net/doc/nav5.cshtml.
You can also use Prism for Uno, which handles navigation per regions. You can find documentation here https://prismlibrary.com/docs/ and samples here: https://github.com/PrismLibrary/Prism/blob/c71957ad56c0cfedf479d46dcb1870c96232d86c/e2e/Uno/HelloUnoWorld.Shared/ViewModels/ShellViewModel.cs#L30

Is source code for editor open source? [closed]

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I am new to dart and really like the editor, I mean, just at the editing features: auto-completion, function signature prompt, etc.
Is the underlining technology totally Eclipse? I am not familiar with Eclipse, but I wonder if Dart editor open source? Is it programmed in C++, Java or Dart?
I guess my question is - is it available relatively easy to grab used for an editor in my application? My application is to be done in Dart hopefully.
Right at the top AND bottom of https://www.dartlang.org/tools/editor/, which is the first search result on Google and DuckDuckGo, it says open-source. There's even a link to all the source code on Google Code. It appears to be mostly Python.
Before asking a question, make some effort to find things out for yourself.

windows 8 style API for ASP.NEt (websites) [closed]

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I've heard that Microsoft has unleashed a windows 8 style (previously known as metro) API for ASP.NET
Does anyone knows anything about it? What is it called? Where to get it from?
Unfortunately I don't have any link about that API. I've tried searching for it but didn't get any luck.
I have found some JQuery APIs, but I'm asking about the one done by Microsoft itself. Is there any?
I was hoping that there's a simple way of creating "metro look" without having to reinvent any wheel (if there's already an API for it)
That's not called an API, that's ususally called a theme: a set of stylesheets and images.
I think you are looking for Metro UI CSS. It's got little to do with Microsoft though.

Make pdf editable in asp.net C# [closed]

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I have a PDF or Image . in this i can write something, draw line , high light sentences then download it .
how to Achieve this.
thanks in advance
Well PDF and Images are two different things.
I know it's poor advice but you should really do a quick web search for ".net pdf library". You will find dozens of paid and free code libraries for creating and manipulating PDF documents with plenty of very good documentation on how to use them.
Similarly for Images there are also many, many .net libraries for doing image manipulation.

Learning Flex 4: Advice [closed]

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So, the company I'm working at uses Flex and Java for their product.
Currently, I'm just an XML editor, but I would like to get my hands dirty with
some of the technology they use as soon as possible.
I was wondering if anyone who has learned Flex could possibly give me some advice
on the best way to learn Flex as quickly as possible without getting burnt out and maybe
some things you wish you had known prior to learning Flex.
I know with most technologies I've learned there are those things you wished you had known sooner.
I'm currently working my way through the book "Adobe Flex 4 Training from the Source vol 1". So far everything is pretty easy(I'm up to array collections), but I'm not sure how effective following the examples in this book really is.
Thanks in advance.
Along with videos and demos, find a small project which would work well with a Flex UI and start implementing it. New languages and frameworks are hard to understand until you actually have a problem to solve using them. Canned demos and "hello world" style applications are great for an introduction, but (in my experience) don't do a lot to move you forward in your overall competency level.
This series of videos comes courtesy of Adobe:
http://macromediastudiomx.com.br/devnet/flex/videotraining.html
I also found David Tucker's introduction to the Cairngorm framework very helpful
http://www.davidtucker.net/category/cairngorm/
You could join a Flex User's Group.

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