explain in detail about the unix operating system structure
o'reilly learning the UNIX operating system
Ngày tải lên :
25/11/2013, 11:07
... simple commands and seen the results on the screen Previous: 1.1 Working in the UNIX Environment 1.1 Working in the UNIX Environment Learning the Unix Operating System Book Index Next: 1.3 Types ... 2.5.4 The Window Menu single-user operating systems : The UNIX Operating System Size menu item (mwm) : 2.5.4 The Window Menu file:///C|/Documents%20and%20Settings/nmyers/Desktop/learn _unix/ index/idx_s.htm ... Customizing Your Account printing : 4.5 Printing Files reading : 3.2 Looking Inside Files remote : 4.4.6 Files on Other Operating Systems copying : 4.4.2.3 rcp renaming : 4.4.3 Renaming and Moving...
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Programming the Be Operating System-Chapter 9: Messages and Threads
Ngày tải lên :
17/10/2013, 19:15
... subsequent window is to be staggered from the previously opened window: #define #define #define #define #define #define WINDOW_WIDTH WINDOW_HEIGHT WINDOW_1_LEFT WINDOW_1_TOP WINDOW_H_OFFSET WINDOW_V_OFFSET ... 4: uint32 userNumWindows = atoi(argv[1]); The fact that the program’s path is included as part of the program name in the string argv[0] is noteworthy if you’re interested in determining the ... of constants in opening each window WINDOW_ WIDTH and WINDOW_HEIGHT define the size of each window WINDOW_1_LEFT and WINDOW_1_TOP establish the screen position of the first window The two offset...
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Programming the Be Operating System-Chapter 10: Files
Ngày tải lên :
20/10/2013, 10:15
... the window size-defining rectangle frame Since the FileBase window no longer includes a MyDrawView under the menubar, there’s no need to resize the frame such that it fills the window, less the ... *fScrollView; *fSavePanel; }; Which is the better way to include views in a window—by defining an all-encompassing view to nest the other views in, or by simply relying on the window’s top view? It’s partially ... While looking over the old code, I’ll insert a few changes here and there to ready the program for the file-handling code The changes begin in the MyHelloApplication class definition In any Be...
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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
... created window object: • The frame, or content area of the window (the size and screen placement of the window) • The name of the window (as it will appear in the window’s tab) • The type of the window ... to creating threads that go unused Defining and Creating Windows At the heart of the graphical user interface of the Be operating system is the window Be applications are window-based—windows are ... that holds details about the action being reported The ability of the operating system to determine the user’s actions and then use a separate thread to pass detailed information about that action...
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Tài liệu Programming the Be Operating System-Chapter 2: BeIDE Projects docx
Ngày tải lên :
26/01/2014, 07:20
... to change in the Find box and the name to replace it with in the Replace box of the Find window Click on the Find button in the Find window After verifying that the found text should indeed be ... of the application about to be built—you that in the Settings window To display the project Settings window, choose Settings from the Window menu in the project file On the left side of the window ... with the origin the point (0, 0) This has the effect of changing the aRect coordinates from (20, 30, 180, 70) to (0, 0, 160, 40) The details of the coordinate system, by the way, are presented in...
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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
... programming the BeOS for awhile, you’ll find the Be Book or its printed version indispensable But now, as you take your first steps in programming the BeOS, you may find the voluminous size and the ... for eliminating them the inline keyword The upside to the use of the inline keyword is that execution time decreases slightly The downside is that this reduced time is achieved by adding more ... role in the workings of the described class For instance, the BWindow overview mentions that the Application Server is responsible for allocating window memory and the BView class makes drawing in...
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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
... within a window the drawing will take place using the view’s own coordinate system Like the global and window coordinate systems, the view coordinate system is one of floating point coordinate ... int32 *theWindow; i = 0; while (theWindow = be_app->WindowAt(i++)) { // something, such as close theWindow } The preceding loop starts at window in the window list and continues until the last window ... systems Coordinate system example projects To determine the size of a view in its own coordinate system (whether the view resides in a window or within another view), begin by invoking the BView member...
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Tài liệu Programming the Be Operating System-Chapter 5: Drawing ppt
Ngày tải lên :
26/01/2014, 07:20
... important in their own right, as they’re the basis for defining the boundaries of interface elements such as windows and controls But they are also instrumental in the definition of other shapes, including ... draws the lines of the polygon’s edges starting at the first point in the array, and finishes by closing the polygon with a line from the last point back to the first point Thus, the previous ... at the same point where the first line ended void MyDrawView::Draw(BRect) { BPoint point1; BPoint point2; 162 Chapter 5: Drawing Figure 5-12 The window that results from running the PointAndLine...
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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
... results in that window invoking the BWindow hook function Zoom() to shrink or enlarge the window To allocate the handling of a message to one of its views, the window passes the message to the affected ... it, as for a button), the system passes the application-defined message to the window How the window handles the message is determined by the code you include in the BWindow member function MessageReceived() ... click on the leftmost button (which is the default button) results in the playing of the system sound a single time, while a click on the other button produces the beep twice Preparing the window...
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Operating System Structures Cấu trúc Hệ điều hành
Ngày tải lên :
28/10/2013, 09:15
... services provided by an operating system Explain how each provides convenience to the users Explain also in which cases it would be impossible for user-level programs to provide these services Liệt ... some systems store the operating system in firmware, and others on disk? Tại số hệ thống lưu trữ hệ điều hành firmware, số khác lưu đĩa? 2.13 How could a system be designed to allow a choice of operating ... chương trình cấp người dùng 2.10 What is the purpose of system calls? Mục đích system call gì? 2.11 What are the main advantages of the microkernel approach to system design? Lợi ích phương pháp microkernel...
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