VC++基于JPG标准的图像压缩算法+代码+论文 第18页

基于JPG标准的图像压缩算法
Docking Windows
One of the new features for VS.NET is that you can dock or expand or collapse
all the windows within the IDE .To add windows to your  IDE, navigate to the
standard toolbar and select View; here you can select all the windows that you
want to have immediately available in your environment. One drawback to this is
that you will not have much room left to work in if you select a lot of windows
to show, but the Auto Hide feature of each window makes them slide off the
screen and embed in the side when not needed. This enables you to have maximum
code view but still have all windows present .To see a window that has
Auto Hide enabled, simply position your mouse over the window icon on either
side of the IDE. You can dock each window into place by clicking on the pin or
by navigating to the standard toolbar and choosing the Window menu option.
Once a window is docked, it is there permanently; you can, however, make the
window float by selecting Window | Floating (see Figure 3.9).
Figure 3.9 Floating Window
 
Properties Explorer
The Properties Explorer is much as it was in VS 6 and the Visual Basic IDE and
Visual Interdev IDE. Select an object from the design window, and in the
Properties Explorer, you will see available attributes for that object listed, as
shown in Figure 3.10.The right-hand column lists the property names, and the
left-hand column stores the attribute’s value. The Properties window enables
Rapid Application Development (RAD) by allowing you to quickly create a
graphical representation of the application you are building without doing any
coding whatsoever. Some options are available in the Properties Explorer. You can
select from the drop-down list the actual object you want to view. You can also
select the Events option and have the event available to that object displayed. You
can organize the Properties Explorer either by categories or alphabetically.
Any changes made in this window will be propagated to the design view and
code view windows, respectively.
Figure 3.10 Properties Explorer
 

Object Browser
The Object browser will give you a complete list of all classes’ methods and
properties in your solution. Everything is listed, and it is quite in depth. If you
want to, you can look up parents of classes that you are using and list out the
methods and properties you might need. By double-clicking on an external class
in your solution, the Object browser will load and have all parent and child nodes
of the class listed with each of their methods and properties included. This comes
in handy when you are in need of finding a suitable substitute class to handle
some part of your application. Like in Java, .NET has an incredible quantity of
built-in classes that can accomplish just about everything you may need—the
trouble is finding their location and how to access their methods and properties.
Using the Object Browser enables you to achieve this in a timely fashion (see
Figure 3.12).
Figure 3.12 Object Browser
 
Dynamic Help
Dynamic Help is a dockable  window just like the previous windows we have discussed.
To get Dynamic Help to appear, simply choose Help | Dynamic Help.
You can then make the window float or Auto Hide. One thing to note is that
each part of Help (Index, Contents, Search, Index Results, and Search Results),
are all separate windows, so if you undock them and make them all float you will
have quite a few windows appearing on the screen. One thing you may do is
load all the Help windows into themselves and a bottom tab order will appear
inside the main Help window; you can then access all parts of Help from the
same window (see Figure 3.13).
To customize the Dynamic Help window, choose Tools | Options. In
the Options dialog box, select Environment and then select Dynamic Help.
Here you can specify what topics you want to have available and in what order.
You may also specify how many links are displayed per topic. You may also create
a custom Help file on your own for your project, by following the XML schema
named vsdh.xsd. Create your XML file based off of that schema list and place the
file where you want your Help topics to be displayed.
Tabbing through the many different Help options and getting to the information
you need is now easy. If you have the hard drive space, loading all the
MSDN Help files from the disks that come with VS.NET would be beneficial. To
do this, simply check the option on the installation sequence that will run from
the computer and not the CD. This will prevent you from constantly having to
load another disk every time you want to look up a particular topic. This gets
quite annoying when you need one disk to open the tree view and another to
access the topic within.

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