use the appropriate operating system or audio
Programming the Be Operating System-Chapter 9: Messages and Threads
Ngày tải lên :
17/10/2013, 19:15
... between
these windows, and the monitoring and reporting of user events such as mouse
button clicks. In short, the Application Server, and indirectly the classes of the
Application Kit, allow the system ... to the clipboard (as opposed to the user placing it there
by a copy or cut), it should first lock the clipboard (in case the user does in fact
perform a copy or cut while your program is in the ... with system messages—messages generated
and dispatched by the system. The Message Protocols appendix of the Be Book
defines all the system messages. In short, system messages fall into the following
categories:
Application...
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Programming the Be Operating System-Chapter 10: Files
Ngày tải lên :
20/10/2013, 10:15
... response to the user’s request. For an
Open file panel, that’s typically when the user chooses the Open item from the
File menu. For the Save file panel, the display of the panel comes when the user
chooses ... hierarchically.
Files, and the directories (or folders) that hold files, are organized in a hierarchy or
tree. Each directory may hold files, other directories, or both. Each item (file or
directory) has a single ... err;
The ref and name variables are again declared for use in determining the direc-
tory to save the file to and the name to give that file. The err variable is again
present for use in error...
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Tài liệu Programming the Be Operating System-Chapter 1: BeOS Programming Overview ppt
Ngày tải lên :
26/01/2014, 07:20
... be added or deleted from the heap without regard for its
placement in the heap, or for the other contents of the heap. The
stack, on the other hand, is used to store objects in a set order—
objects ... with the
required memory. For any running application, the system first uses RAM to han-
dle the program’s needs. If there is a shortage of available physical memory, the
system then resorts ... AMP. A system that uses AMP sends a
thread to one processor (deemed the master processor) which in turn parcels out
subtasks to the other processor or processors (called the slave processor or pro-
cessors).
The...
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Tài liệu Programming the Be Operating System-Chapter 2: BeIDE Projects docx
Ngày tải lên :
26/01/2014, 07:20
... is used in a manner similar to the way you use a
graphics paint program—you select a color from a palette of colors and then use a
Figure 2-8. Viewing the ‘APPI’ information for the HelloWorld ... with the addition of an
underscore and then ppc for a PowerPC-based project or an underscore and then
x86 for an Intel-based project. In Figure 2-3, you can see that for the HelloWorld
project there ... created by the HelloWorld program,
the program passes to the HelloView constructor the size and name the view is to
have. The HelloView constructor will in turn pass that information on to the
BView...
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Tài liệu Programming the Be Operating System-Chapter 3: BeOS API Overview doc
Ngày tải lên :
26/01/2014, 07:20
... classes for the common interface elements. There’s the
BWindow class for a window, the BMenuBar class for a menubar, the BMenu class
for a menu, the BMenuItem class for a menu item, and so forth. ... in the application constructor, the
MyHelloWindow constructor is responsible for creating a new view, adding the
view to the new window, and then displaying the new window.
The new MyHelloWorld ... the object’s destructor when being destroyed. That’s because
the BeOS does the work. The Constructor and Destructor section lets you know
when this is the case for a class. The BWindow class provides...
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Tài liệu Programming the Be Operating System-Chapter 4: Windows, Views, and Messages doc
Ngày tải lên :
26/01/2014, 07:20
... the
time the mouse button was clicked. The values of the point are in the view’s coor-
dinate system. For example, if the cursor was over the very top left corner of the
view at the time of the mouse ... is, the program doesn’t override the BView hook function
MouseUp().
B_MOUSE_MOVED
Is sent to a window when the user moves the cursor over the window. As the
user drags the mouse, repeated B_MOUSE_MOVED ... MouseDown() of the view the cursor was over at the time of
the mouse button click.
B_MOUSE_UP
Reaches the window that was affected by a B_MOUSE_DOWN message when the
user releases a pressed mouse...
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Tài liệu Programming the Be Operating System-Chapter 5: Drawing ppt
Ngày tải lên :
26/01/2014, 07:20
... high color before
changing it. After calling SetHighColor() and FillRect(), use the rgb_color
value returned by HighColor() to reset the high color to its state prior to the use
of the user-selected ... Then, when the user clicks the mouse in the
MyDrawView view, MouseDown() makes the system aware of the fact that the view
needs updating, and the system invokes Draw():
void MyDrawView::MouseDown(BPoint ... drawing will start in the top left corner of
the view (and, because the view is the same size as the window, the top left cor-
ner of the window). A call to DrawPicture() performs the drawing:
void...
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Tài liệu Programming the Be Operating System-Chapter 6: Controls and Messages ppt
Ngày tải lên :
26/01/2014, 07:20
... color controls. A color
control displays the 256 system colors, each in a small square. The user can
choose a color by clicking on it. A program can, at any time, check to see
which color the user ... *fButtonBeep2;
};
Creating the buttons
The buttons are created and added to the window in the MyHelloWindow con-
structor. Before doing that, the constructor declares several variables that will be
used in the pair ... bringing it back to the
forefront doesn’t cause the border to disappear the update message that the
Application Server sends to the MyHelloWindow window results in the calling of
the Draw() function...
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Tài liệu Programming the Be Operating System-Chapter 7: Menus docx
Ngày tải lên :
26/01/2014, 07:20
... for the menu item:
uint32 *shortcutModifiers;
char shortcutChar;
shortcutChar = theItem->Shortcut(shortcutModifiers);
To determine which modifier key or keys are a part of the shortcut, perform ... Shortcut() will fill this variable with a mask that consists of all of the
modifier keys that are a part of the shortcut for the menu item. Shortcut() will
also return the shortcut character for ... given the variable used to represent the sub-
menu the name subMenu, it really is nothing more than a BMenu object. The items
in the Dogs submenu were added the same way as the items in the Animal
menu—by...
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Tài liệu Programming the Be Operating System-Chapter 8: Text ppt
Ngày tải lên :
26/01/2014, 07:20
... between the calls to GetFontAndColor()
and SetFontAndColor(), invoke one or more BFont functions to change the
desired font trait. For instance, to change the size of the font used to display the
text ... sounds, the user can change the font that’s used for any of the
global system fonts. Figure 8-2 shows that the FontPanel preferences program lets
the user pick a different plain, bold, or fixed ... desired
changes to the font and then pass these changes back to the text view object. The
same applies to the text’s color. The BTextView function SetFontAndColor()
takes care of both of these tasks:
void...
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Learning the Unix Operating System pptx
Ngày tải lên :
18/03/2014, 00:20
... Files on Other Operating Systems
MTOOLS utilities for :
4.4.6. Files on Other Operating Systems
dot (.)
. directory shortcut :
3.1.8.1. ls
in filenames :
4.2. File and Directory Names ... N
naming files and directories : 4.2. File and Directory Names
wildcards for :
4.3. File and Directory Wildcards
networked filesystem :
3.1.3. The Directory Tree
networks, copying files across ... situation exactly.
If none of these suggestions helps you enough, ask another UNIX user or your system administrator.)
1.1.1.1 Connecting from another operating system
If you're using a...
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The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System
Ngày tải lên :
12/09/2012, 15:05
... the memory object X. The shared memory server records each use
of X, and the pager request and name ports for those uses. Note that the Mach kernel does not await a reply from
the shared memory ... port.
port_deallocate(task, port)
Deallocate the task’s rights to this port.
port_enable(task, port)
Add this port to the task’s default group of ports for msg_receive.
port_disable(task, port)
Remove ... runs on more than a dozen computer systems including the VAX family of uniprocessors
and multiprocessors, the IBM RT PC, the SUN 3, the 16-processor Encore MultiMax, and the 26-processor Sequent
Balance...
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Tài liệu THE OPERATING SYSTEM MACHINE LEVEL-6 docx
Ngày tải lên :
12/12/2013, 09:15
... logical records. (a)
Before reading record 19. (b) After reading record 19.
Original process
Children of A
Grandchildren of A
A A A
A
A A
Figure 6-43. A process tree in
UNIX
.
6
THE OPERATING SYSTEM
MACHINE ... 4
Track 19
Track 11
Track 77
Sector 6
Sector 9
Sector 2
Sector 0
Figure 6-22. (a) A user file directory. (b) The contents of a
typical entry in a file directory.
Relative
address
0
4
BASE 0-15 ... 0);
// Close the files
close(infd);
close(outfd);
Figure 6-36. A program fragment for copying a file using the
UNIX
system calls. This fragment is in C because Java hides
the low-level system calls...
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Chapter 1 Introduction to Routing and Packet ForwardingRouting Protocols and Concepts quangkien@gmail.com.Topicsl Inside the Router Ÿ Routers are computers Ÿ Router CPU and Memory Ÿ Internetwork Operating System Ÿ Router Bootup Process Ÿ Router Ports doc
Ngày tải lên :
09/03/2014, 13:20
...
Ports
Console port
Ÿ Terminal
Ÿ PC running terminal emulator software
l No need for network access
l Used for initial configuration
Auxiliary (AUX) port
l Not all routers have auxiliary ports.
Ÿ ... command is used to view information about the
router during the bootup process (later).
Inside the Router
l Routers are computers
l Router CPU and Memory
l Internetwork Operating System
l Router ... Process
l Router Ports and Interfaces
l Routers and the Network Layer
2
Topics
l Inside the Router
Ÿ Routers are computers
Ÿ Router CPU and Memory
Ÿ Internetwork Operating
System
Ÿ Router Bootup...
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The Cheapest Way to Make Phone Calls, Send Faxes or Use the Internet docx
Ngày tải lên :
15/03/2014, 09:20
... for the very same reason, these companies
are obscure. Most people don’t know about them; in fact, it may take
considerable effort to hunt some of them down.
Another factor complicating the ... want the general public to know. The
common denominator of the information is that the resultant savings will be
real, measurable, and substantial. The purpose of this book is not to name or ... 3 –
In order to qualify for a Smart Number, you must be either a
pager or cellular phone customer; however, this service does
not require the use of your pager or cellular phone. The basic...
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