progress bar code in vb net 2010 Installing Xcode in Objective-C

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Installing Xcode
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Installing Xcode Tools works in the same way as most Mac software. In the installation folder, find the file called Xcode.mpkg and double-click the icon to run it. The installer asks you to authenticate, and there is the usual license agreement stage, but there should be few surprises in the installation process. There are two places where you might be unclear about the installation: the location of the installed files and custom installation options. Let s deal with both of those now.
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Installation Location
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In earlier versions of Xcode, you had no choice about location: the files went into the Developer folder at the root of your main disk that is, /Developer. Although Xcode 3 offers you much more flexibility about where to install Xcode, the default is still /Developer, and to be honest, unless you have a special reason to put it somewhere else, that s probably the best place.
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CHAPTER 2: Introducing the Xcode Workspace
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Custom Installation Options
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The installation process takes you through the custom installation options screen (quite a few Mac software installation programs have a screen like this, but most of the time you don t see it unless you choose to). Figure 2 1 shows what you will see here.
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Figure 2 1. Xcode installation options
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The options here simply give you a little more control over the installation. For example, if you want to create applications that use the Mac OS X 10.4 APIs, you can check that option. You may want to think about the Documentation option. If checked, the default Xcode will download and keep up to date a copy of the Developer Documentation. Unchecking this option means that you will need to be online in order to use Developer Documentation. You can change this setting in the Preferences (we ll be taking a closer look at this later in the chapter). If you are new to Xcode development and you just want to create applications for Mac OS X and iPhone, leave this screen as it is and choose the Continue button. All being well, the installation will run without incident, and you will see the usual successful installation message.
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CHAPTER 2: Introducing the Xcode Workspace
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What the Installation Added
Feel free to skip this section if you are not interested in knowing what goes where. Personally, I am always keen to know what software installations have done to my computer, and I m just curious in any case. So here is what the installation has added to your computer: In /Developer, you will have a collection of top-level folders with child folders containing a vast number of application, documentation, and other files. This, for most practical purposes, is the whole of Xcode. In /Library/Developer, you will have a range of folders containing configuration and support files. You will probably never venture anywhere near these folders unless you need to uninstall Xcode (see below). In /usr/bin lives the gcc compiler (gcc is a UNIX-based compiler that is at the heart of Xcode software) and a variety of support files. You will probably never go looking for these either.
Removing Your Xcode Developer Tools Installation
Should you ever wish to uninstall Xcode (unlikely though that may seem), it s very straightforward. Open a Terminal, change to the /Developer/Library folder and run the uninstall-devtools script:
$ sudo ./uninstall-devtools mode=all
By the way, there are a number of different options for running this script, giving you finer control over what you remove. Check out the documentation for this in About Xcode.pdf (which you can find in the same folder as the installation package). Note that you need to run this script with root privilege, hence the sudo command. It s worth checking that the /Developer/Library/ folder has been removed, and if not just move that to the Trash, too.
Getting to Know the Xcode Workspace
You start up Xcode just like any other Mac application: either click on the Dock icon (if it is there) or double-click on the icon in /Developer/Applications (you didn t install it there OK, wherever you did install it).
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