I have a very specific question. I want to create a multimedia multi-platform application on C# which will use Mono. Is it possible to create a C# Mono application which will use gstreamer-sharp or "pure" gstreamer or something like "glued" gstreamer on these platforms: Windows, Mac OS, Linux, iOS, Android? I think I can use Pinvoke, but maybe it can be implemented more elegant? I know, it's maybe really strange question(or maybe not ;-)) but which variants I have?
This should be do-able. The gstreamer SDK is available for all of your required platforms and is documented/can be installed from here:
http://docs.gstreamer.com/display/GstSDK/Installing+the+SDK
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We have a codebase for a sync library written in Objective-C. In general it's only using stuff from the Foundation framework (NSArray's, NSDictionary's, NSURLConnection's etc.).
We also use some Cocoa-specific functionality in this codebase: KVO and delegation.
Is it possible to compile this codebase to other platforms, similar to how it's possible to compile C/C++ code to multiple platforms? How should I go about doing this? What tools would I need?
edit: The platforms we're mostly interested in (if possible of course): Windows, Android, BlackBerry, Windows Phone 7
Thanks in advance.
Here is a delightful article from cocoawithlove - Options for porting Objective-C/Cocoa apps to Windows. It atleast answers how to port ObjectiveC to windows.
I need to develop a software which works for both windows and Mac OS.
The requirement are follows:
User can view flash file, make the selection and software print out the user selected flash file list.
I have experience in .net and windows platform but no experience in Mac OS. What is best development language and tool for my current situation.
I may be a bit biased on this, but you should use Qt because it will make your code portable on Windows, Mac OS X, Linux and even some mobile platforms. I don't really understand your requirement but Qt is pretty much the all-round cross-platform solution. It's C++ based, but easy as such (no memory management hassle, Qt takes care of it all).
On one hand you could use Java, it's fully compatible with Windows, Mac and Linux, also the language is similar to C# so you could adapt without too much trouble, if you used .net with C#.
On the other hand you could use your knowledge in .net and use Mono. It's an open source library for running .net code in other platforms, It's not equal to .net (doesn't include all the libraries) but could solve your problem.
Hope my answer helps you.
Xojo is pretty easy to use and lets you make native Windows and Mac apps from a single source project so you might want to take a look at it.
What tutorials cover how to use Objective-C in Windows?
I heard about mingw, but I couldn't configure it. I would like to only create command-line programs because I heard that there is no iPhone/iPad simulator for Windows and I would like to learn Objective-C.
I am need to parse a pdf file. I would like to use objective-c and Cocoa classes to do so, but I need the resulting application to run on Linux. Is this possible? My experience to Objective-C revolves around the iPhone so I'm relatively new to Cocoa. Thanks.
Cocoa is Mac and iPhone only, but you could use GNUstep, which is based off the same OpenStep Objective-C API as Cocoa, and PopplerKit for PDF reading.
In addition to GNUstep, there's Cocotron which cross-compiles from Xcode running on a Mac. If you can develop on Xcode, then it's an option.
No, Cocoa is specific to Mac. You can use Objective C on Linux, but I doubt there's much library support. You might have better luck finding a PDF parser for Linux (ghostscript might have libraries) that also works on Mac.
I'm starting to learn Objective-C and I don't have a Mac (and I don't have plans to get one), but as I see that Cocoa is a very good framework to develop in Objective-C, I want to know: Is it possible to develop using Cocoa in Windows and Linux?
Thanks.
I think that your best bet, if you want to use Cocoa, is to get a Mac. You really won't regret it. GNUstep is a neat solution, but it is impractical to distribute applications built using GNUstep, because (as far as I know), clients must have the runtime installed for it to work.
Cocotron is an amazing project as well, and in the future, it may be useful for you if you want simple apps to run on both Mac OS and Windows. But you would still need a Mac to use it.
If you are interested in using a language like Objective-C with a framework like Cocoa, but don't want to get a Mac, why don't you try web application development with Cappuccino and Objective-J?. Objective-J is an implementation of an Objcective-C-like language in JavaScript, and Cappuccino is a really amazing imitation of the Cocoa framework in Objective-J.
Some examples of what can be created using that framework are 280 Slides and the new, stunningly beautiful EnStore. That's not a perfect solution, and unless you are content to just do web applications, you should buy a Mac.
Take a look at Cocotron
The purpose of the project is to provide an easy to use cross-platform solution for Objective-C development. In particular, source code level compatibility with recent versions of Apple's frameworks (OS X 10.4 and 10.5).
The general goal is to provide complete support on any viable platform, the project is intended to be as portable as possible. However, most of the work at this time is focused on providing support for Microsoft Windows. In particular the NT based versions, 2000 up to Vista.
You can also run Snow leopard Server inside a virtual machine, like VMWare Fusion.
Apple changed it licence in 2008 to allow that, but only with server editions. I have personally used it with some success to deploy iphone applications (Although it was admitably a bit slow).
You will need decent hardware and preferably a dedicated hard-disk drive to be able to use it properly.
And considering the cost of vmware and osx server you might be better off buying a used mac.