the linux operating system
Programming the Be Operating System-Chapter 9: Messages and Threads
... with system messages—messages generatedand dispatched by the system. The Message Protocols appendix of the Be Bookdefines all the system messages. In short, system messages fall into the followingcategories:Application ... posted message becomes the next in the queue, the looper invokesDispatchMessage() to pass the message to the target handler. The effect is for the posted message to reach the target handler’s ... sev-eral examples of the creating of messages and the dispatching of these messagesboth by the object that created them and by other objects.Figure 9-1. The inheritance hierarchy for the Application...
- 37
- 541
- 0
Programming the Be Operating System-Chapter 10: Files
... For the Save file panel, the display of the panel comes when the userchooses the Save As item from the File menu. In response to the message issuedby the system to the appropriate MessageReceived() ... control is in the hands of the user. Once the user confirms a choice (whether it’s a file selection in the Openfile panel, a click on the Save button in the Save file panel, or a click on the Can-cel ... in either type of panel), a message is automatically sent by the system to the panel’s target. By default the panel’s target is the application object, but thiscan be changed (either in the BFilePanel...
- 18
- 405
- 1
Tài liệu Programming the Be Operating System-Chapter 1: BeOS Programming Overview ppt
... during the execution of a program. Anobject can be added or deleted from the heap without regard for itsplacement in the heap, or for the other contents of the heap. The stack, on the other hand, ... such tasks. The zoom-ing and moving of windows is handled by the system, not by the SimpleApp code.This simple demonstration emphasizes the power of the BeOS system software—itis the system software ... window’s tab)• The type of the window (the look and feel of the window)• The behavior of the window (whether it has a resize knob, and so forth)Recall from your C++ background that when the definition...
- 30
- 460
- 0
Tài liệu Programming the Be Operating System-Chapter 2: BeIDE Projects docx
... file with the same name as the project (andthus the same name as the application that will be built from the project). The header file holds the definition of the class derived from the BApplication ... anyresizing of the window. The final BView constructor parameter determines the types of notifications the view is to receive from the system. The Be constantB_WILL_DRAW means that the view should ... stated that the header file that bears the name of the project should hold the declaration of the project’s application class the class derived from the BApplication class. Here you see that the HelloWorld.h...
- 44
- 412
- 0
Tài liệu Programming the Be Operating System-Chapter 3: BeOS API Overview doc
... toanother window.Class Descriptions and the Be Book The definitive source of information for the many classes that make up the BeOSsoftware kits is the Be class reference by the programmers of the ... to them, some oftheir classes appear throughout the book. See the description of the Support Kitbelow for a specific example concerning the BLocker class.Application Kit The classes of the ... created 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...
- 23
- 449
- 0
Tài liệu Programming the Be Operating System-Chapter 4: Windows, Views, and Messages doc
... 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 click, the point’s ... If the point (100.1, 49.9) is used instead, the result is the same the win-dow’s corner ends up 100 pixels from the left and 50 pixels from the top of the screen. The above scenario begs the ... the window (to the top view), rather thanto another view, so both views are on the same level in the window’s view hierar-chy. The Draw() function of each view type includes code to frame the...
- 36
- 411
- 0
Tài liệu Programming the Be Operating System-Chapter 5: Drawing ppt
... done in the Draw() function, wherea call to MovePenTo() ensures that the drawing will start in the top left corner of the view (and, because the view is the same size as the window, the top ... FillRegion(fThreeRectRegion);}Implementing the MouseDown() routine for the MyDrawView class is as easy ascomparing the cursor location (supplied by the system when it automaticallyinvokes MouseDown()) to the area of the region. The ... defines one of the fouredges of a rectangle. The values of the left and right members are relative to the left edge of the view that is to hold the rectangle, while the values of the topand bottom...
- 43
- 459
- 0
Tài liệu Programming the Be Operating System-Chapter 6: Controls and Messages ppt
... the BWindow hook function Zoom() to shrink orenlarge the window. To allocate the handling of a message to one of its views, the window passes the message to the affected view, and the view then ... on it, as for a button), the system passes the applica-tion-defined message to the window. How the window handles the message isdetermined by the code you include in the BWindow member functionMessageReceived().Control ... values to the variables to be used in the control’s con-structor• Create the control using new and the control’s constructor• Attach the control to the window by adding it to one of the window’s...
- 49
- 383
- 0
Tài liệu Programming the Be Operating System-Chapter 7: Menus docx
... as the item’s label when the user pulls down the menu in which the itemappears. The message parameter assigns a message of a particular type to the menu item.When the user chooses the item, the ... given the variable used to represent the sub-menu the name subMenu, it really is nothing more than a BMenu object. The itemsin the Dogs submenu were added the same way as the items in the Animalmenu—by ... all ofthese items need to be shifted within the window, it would make sense to haveall of the items attached to a view within the window rather than to the win-dow itself. Then a call to the...
- 46
- 390
- 0
Tài liệu Programming the Be Operating System-Chapter 8: Text ppt
... When the contents of the view a scrollbar isattached to exceed the size of the view, the scrollbar’s knob appears and the scrollbar becomes enabled. As the content of the view increases, the ... the window, so the default state for the BStringView text has the text starting 10 pixels from the left edge of the win-dow. Figure 8-6 makes it clear that this isn’t the starting point of the ... snippet produces the text shown in the window in Figure 8-4:BFont theFont(be_plain_font);theFont.SetSize(24.0);theFont.SetRotation(45.0);theView->SetFont(&theFont);theView->MovePenTo(70.0,...
- 50
- 345
- 0
UNIX LINUX Operating System
- 44
- 509
- 0
The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System
... architectures.Today, the concept of an extensible operating system is once again gaining acceptance this time as the solutionto the unconstrained growth of UNIX. During the last 20 years operating systems and their ... tasks.Many other operating systems have met with this problem. Often these systems solve the problem by using insideknowledge of the algorithms used to manage secondary storage. Unfortunately, the Mach ... of the 8th Symposium on Operating System Principles, pages 64-75. December, 1981.[16] Rashid, R.F.From RIG to Accent to Mach: The Evolution of a Network Operating System. In Proceedings of the...
- 23
- 1,290
- 1
Learning DebianGNU Linux-Chapter 5: Installing and Configuring the X Window System
... specify the device file associated with the mouse, as shown in Figure 5.5. The install program should have associated your system& apos;s mouse with the device /dev/mouse, which is the default ... part of the desktop and a pop-up menu will appear. From the menu, select the Exit, Logout, or Quit menu item. X shuts down, returning you to the familiar text-based interface of the Linux shell ... idea to write these down so that you remember to observe them even after they've scrolled off the screen. Figure 5.14: The selected card definition Next, you must specify the X server...
- 19
- 386
- 0
Learning DebianGNU Linux-Chapter 6: Using the X Window System
... program to another, and perform other tasks. The panel normally contains the main menu, the pager, and two hide buttons. However, your panel may not initially display the pager. The panel can ... Drawer from the pop-up menu. To move a launcher into the drawer, right click on the launcher and select Move Applet from the pop-up menu. Move the cursor over the drawer and click the left mouse ... text. To do so, you move the mouse cursor to the beginning of the text, press the left mouse button, and drag the mouse across the text to be marked. X automatically copies the marked text into...
- 34
- 298
- 0
- the internetwork operating system
- the unix operating system
- how to balance the linux operating system
- the linux tips linux operating system
- learning the unix operating system
- learning the unix operating system download
- learning the unix operating system fifth edition free download
- learning the unix operating system fifth edition pdf download
- learning the unix operating system free download
Tìm thêm: xác định các mục tiêu của chương trình xác định các nguyên tắc biên soạn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu nội dung cụ thể cho từng kĩ năng ở từng cấp độ phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha sự cần thiết phải đầu tư xây dựng nhà máy từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25