... another shell prompt; you can enter UNIX commands again.Previous: 1.2 Syntax of UNIX Command Lines Learning theUnix Operating System Next: 1.4 The Unresponsive Terminal1.2 Syntax of UNIX ... documentation on UNIX : 7.1. Standard UNIX Documentation DOS, accessing with UNIX : 4.4.6. Files on Other Operating Systems MTOOLS utilities for : 4.4.6. Files on Other Operating Systems dot ... Rights Reserved. The UNIX CD Bookshelf Navigationfile:///C|/Documents%20and%20Settings/nmyers/Desktop/learn _unix/ index/idx_i.htm [6/30/2002 3:41:00 PM] Learning theUnixOperating System By Jerry...
... with system messages—messages generatedand dispatched by the system. The Message Protocols appendix of the Be Bookdefines all thesystem 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...
... 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 thesystem 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...
... 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 thesystem 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...
... 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...
... 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...
... 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...
... 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 thesystem 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...
... 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), thesystem 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...
... 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...
... 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,...
... ofthese will be dealt with and the main theories within each will be summarized and aconcluding evaluation made.There are also the theories from which, in one sense, all the others derive – the historically ... obvious by now, the aim of this book is to give an overview of theories ofemotion and to consider their worth. The structure of the book is simple. The manytheories of emotion, and there are at ... judge the worth of a theory.What a theory of emotion should doWith these more general concerns as a background, the foreground is taken up withemotion theories themselves. What should they...
... increase further the overall size of the book and we therefore have eliminatedsome redundant material.Further, the reader will notice the present subdivision into three volumes, in which the ®rst ... Convergence criteria The assumed shape functions limit the in®nite degrees of freedom of the system, and the true minimum of the energy may never be reached, irrespective of the ®neness ofsubdivision. ... occurred. The expanding research and ®eld of application of ®nite elements ledto the second edition in 1971, the third in 1977 and the fourth in 1989 and 1991. The size of each of these volumes...
... others. Dennis and More9survey the ®eld exten-sively, while Matthies and Strang10appear to be the ®rst to use the proceduresin the ®nite element context. Further work and assessment of the ... in an identity. Further, the form ofEq. (2.22) guarantees preservation of the symmetry of the original matrix. The nature of the update does not preserve any sparsity in the original matrix. ... time. In the above, and in the sequel, we always use the convention that repeated indices in aterm are summed over the range of the index. In addition, a partial derivative withrespect to the coordinate...
... Professor Nigel Weatherill and Dr.Oubay Hassan who have contributed several of the diagrams and colour platesand, in particular, the cover of the book. The recent work on the CBS algorithmhas ... and whether or not transiently or incidentallyto some other use of this publication) without the written permission of the copyright holder exceptin accordance with the provisions of the Copyright,Designs ... possible. Any analysis must thereforeconcentrate on the motion, and the essential independent variable is thus the velocityu or, if we adopt the indicial notation (with the x; y; z axes referred...