Setup In-App purchases for OS X app examples [closed] - xcode

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I know there are references on Apple's Developer website, but I'm having a hard time successfully implementing the ability to have an in-app purchase into my Mac App.
I'm looking for something similar to MKStoreKit, IAPNoob, or IAPHelper.
There are many iOS classes that do most of the legwork, and are easy to implement within minutes. I'm hoping someone can point me in the direction of something like this for OS X apps.

Implementing InApp Purchases for iOS and OS X are similar. You can use the same code for both. But for OS X you have to study about the Validating Mac App Store Receipts to validate the purchase at the launch of the application. You can refer the RVNReceiptValidation for the reference. It is easy to Implement. If you have any doubt regarding this let me know that.

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is there GUI framework for mobile and desktop applications? [closed]

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HI I'm big lover of golang but I'm beginner and I want to knew if it possible to build interface application with go for mobile or desktop
I see video on YouTube that's talk about framework called GIO https://gioui.org/ https://www.youtube.com/watch?v=PxnL3-Sex3o
but it's has small community and I've got many errors so is there any one familiar with GIO tell how to start if it's possible
There is also the Fyne toolkit that aims to be easy to learn for anyone. It supports desktop and mobile and it's apps follow use material design using light and dark themes. There are tutorials available on YouTube and there is a tour if you prefer reading.

Do I need to be connected to a mac, to be able to develop IOS-apps in VS on Windows? [closed]

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I'm new to cross-platform mobile development with Visual Studio, and I'm wondering if it's possible to make IOS apps without connecting VS to an active mac. Seems a bit weird to always have a mac at your disposal, up and running to be able to develop IOS apps. Or maybe that's just how it works. Problem is I don't have a mac.
Is there another way?
That is indeed how it works. You can thank Apple for that. They require iOS apps to be built on Apple hardware.
Many people will use mac providers such as Mac In The Cloud. If you Google services such as that you will find a long list of them.
There is also some hacks you can use to get a Mac running in VMware which have worked for me but that is not suggested as it violates terms of service for Apple and also probably for VMware.

How do I work with Apple OSX API with Delphi? [closed]

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I am confused regarding how to know what to do in order to utilize the OSX API to do whatever I want my app to do.
For example, I'd like to work with USB devices, where can I find info regarding that?
I have asked previously regarding just that, USB devices, but no one answered, and google search gives me air-thin results.
I don't know how to approach this.
Where can I find documentations or instructions or tutorials or whatever that helps me understand the OSX API implementation with Delphi?
I use Delphi XE7
The official reference for the OSX API is located in the Mac Developer Library, for usb devices you can check OSX USB Device Interface Guide.
Now the best place to learn how work with the OSX from Delphi is reading the RTL OSX code located in the Embarcadero\Studio\n.0\source\rtl\osx folder. Another great source of information is the TIndex site which is a huge collection of ordered and selected resources about Delphi programming, So you can try the OSX Section.

Xcode Download? [closed]

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I just upgraded to OS X Mavericks, and I am very excited to be able to use all the new Mavericks technologies. I have just one problem: Where can I download Xcode?
It is not listed in either the updates page in the Mac App Store, or at Apple’s developer website. Please tell me that I do not have to be a paid developer-program subscriber to download this update! The real problem is not with Xcode itself, but rather with the 10.9 SDK. Without the header files in the SDK, I cannot tell what the APIs are. As I do not know what the APIs are, I cannot use any developer tool (even those not based on Objective-C).
I also noticed that Apple has not yet updated the Mac Dev Center with info for Mavericks, despite its public release. It is entirely probable that Apple is simply lagging behind with updating the developer website following today’s announcement.
Although it hadn't yet appeared under the (Mac) App Store Updates tab, I was able to search for it and update it that way.

Offline Mac OS X Developer Documentation [closed]

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I would like to get all the developer documentation for offline use.
I'm using xcode mostly on my commute and mobile inet is not good enough in my area.
There were a number of questions regarding docs in general answered more or less, but I have a more specific requirement.
At the moment I only have class reference, but i would like to have documents mentioned in "Companion guides" as well. I tried to "Subscribe" to 10.5 Core Library but it doesn't seem to add anything beside the stuff that was installed with XCode. I'm using XCode 3.1.2 if that makes any difference.
What options do i have? Downloading officially/wget'ing everything/finding some obvious button in preferences?
Dash.app is a great documentation viewer that has all of Apple's docs for offline viewing (as well as tons of other frameworks/languages).
It looks as though XCode should be downloading it if setup as per this question:
Download of Cocoa API documentation

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