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Linked lists Class name Description TSglQue Singly linked list – elements of type T can be added at the start or end of the list, any element can be removed. The list can be iterated through in a single direction. [*] A link object(TSglQueLink), that connects each element to the next one, must be a member of the template class. TDblQue Doubly linked list – elements of type T can be added to and removed from the list, at any position. The list can be iterated through in both directions. [**] A link object (TDblQueLink), that connects each element to the next and previous elements, must be a member of the template class. [*] Using a TSglQueIter [**] Using a TDblQueIter Fixed size arrays Class name Description TFixedArray A fixed-size array where S specifies the array size and T specifies the type of elements that it can hold. This class is a thin wrapper over a standard C++ array, with range checking. Elements can be deleted through the array, but it does not have ownership. Dynamic arrays Class name Description TArray An array interface that provides a Count() and At() function only. Its purpose is to allow all array types to be represented in a generic way. Elements can only be accessed through the interface; they cannot be added or deleted and the array cannot be sorted. This interface is implemented by all of the dynamic and fixed-size array types. RPointerArray A pointer array. Supports uniqueness, sorting and searching. May be sorted and searched either by pointer address, or by object pointed to – the latter requires the caller to specify a function that compares template class objects. [*] Can exercise ownership through ResetAndDestroy(). RArray A simple and efficient array of fixed length objects. It can be sorted and searched either by using an integer value stored at a specified offset in the template class, or the caller can specify a function that compares template class objects. The Function is packaged in TLinearOrder or a TIdentityRelation object. It provides specializations for arrays of signed and unsigned integers.
Class name Description [*] CArrayFixFlat An array of fixed size elements that uses a flat buffer for storage. It supports sorting, searching, and uniqueness. Sorting and searching are done using a TKeyArrayFix key specification (either a descriptor or an integer stored at a specified offset in the template class). It provides various specializations. It owns the objects in the array. CArrayFixSeg As CArrayFixFlat, but using a segmented buffer. CArrayPtrFlat An array of pointers to objects, using a flat buffer for storage. It supports sorting, searching, and uniqueness. Sorting and searching are done using a TKeyArrayFix key specification. Can exercise ownership through ResetAndDestroy() CArrayPtrSeg As CArrayPtrFlat, but using a segmented buffer. CArrayVarFlat An array of variable size elements that uses a flat buffer for storage. Supports sorting, searching, and uniqueness. Sorting and searching are done using a TKeyArrayVar key specification. The element's length is specified when inserting. Provides a specialization for arrays of TAny. It owns the objects in the array. CArrayVarSeg As CArrayVarFlat, but using a segmented buffer. CArrayPak A packed array of variable size elements. Similar to CArrayVar except in its implementation. Provides a specialization for arrays of TAny. CArrayPakFlat As CArrayPak, but using a flat buffer only. [*] The Function is packaged in a TLinearOrder, or TIdentityRelation object. Notes: � Arrays that use segmented storage (with a 'Seg' suffix) are designed for frequent additions and deletions or where the array could grow to a large size. � Arrays that use flat storage should be used to hold a limited number of elements, or when insertions and deletions are rare. � RArrays are faster than the equivalent CArrays, so generally should be used in preference, unless segmented storage is a requirement (segmented storage is not available for RArrays). � If variable-length items need to be contained in the array, use a CArrayVar (if updates are more frequent) or a CArrayPak (if updates are very infrequent). � CArrayPak arrays have the advantage over CArrayVar of a smaller memory overhead for each element (they don't store a pointer to each element). Descriptor arrays Class name Description CDesCArrayFlat A dynamic array of 16-bit descriptors, using a flat buffer for
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Table of Contents Symbian OS C++ fo
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Reprinted August 2003 All Rights Re
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� consultants, trainers, and auth
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Symbian OS C++ for Mobile Phones fo
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When you're ready to use the Symbia
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improvement. She has a reputation f
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John works in the partner projects
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If you've never seen Symbian OS bef
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within a particular application. In
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There are a number of other ways in
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programs - namely, to handle and re
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There is no need to trap the call t
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abld build winscw udeb The winscw p
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If you're curious, you might want t
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If your connectivity software does
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Chapter 2: System Structure Overvie
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Figure 2.2 Figure 2.3 Symbian OS OE
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Note Actually, for performance reas
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To be executed, an executable has t
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The kernel itself has two major com
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ROM handling is easy. The ROM consi
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You can control the stack size in a
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industry standard, slightly smaller
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A server also uses its own active o
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In order to minimize any difficulty
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� The top-level project name in t
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Title DLL Source Group Headers Desc
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Chapter 3: C++ and Object Orientati
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The fundamental rule is, use names
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Category Examples Description Const
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3.2.6 Summary Naming conventions ar
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Convenience functions are trivial w
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� When declaring a virtual functi
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used in preference to old style C c
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Java uses interfaces too: in Java,
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� Whether these are private or pu
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If the cardinality is not 1-to-1, t
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Figure 4.1 At the bottom is the GDI
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In addition to the four C++ classes
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In addition, as indicated by the SO
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Figure 4.3 SDK and then browse to t
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eturn KErrNone; } Important You mus
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private: // from CEikDocument CEikA
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ConstructL() performs second-phase
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hellogui's application view is a co
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The other things we haven't seen in
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form described above advertises the
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} RESOURCE TBUF r_hellogui_text_hel
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CQikAppUi::HandleWsEventL(const TWs
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4.9 Terminating the Application By
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debug stepping, variable watching,
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5.1 Strings and Memory To understan
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� HBufC* is a pointer to a heap-b
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strlen() doesn't include the traili
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The Des() function returns a TPtr c
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TBuf helloWorld(_L("hello")); greet
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TDes& parameters. Symbian OS itself
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5.4 More Text APIs Symbian OS uses
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encodings of Unicode that use seque
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Chapter 6: Error Handling and Clean
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Even user input errors can be handl
Page 123 and 124: Note It also demonstrates that the
Page 125 and 126: eak; So, the New 1 menu item alloca
Page 127 and 128: this line yourself, and then rerun
Page 129 and 130: case EMagicCmdNew2: delete iObject2
Page 131 and 132: If the new(ELeave) fails, then iObj
Page 133 and 134: If you're writing a function, and t
Page 135 and 136: } You can invoke these functions fr
Page 137 and 138: Any one of the calls to UseL() may
Page 139 and 140: case EMagicCmdUse4: { CY* y = new(E
Page 141 and 142: � Functions that can leave must o
Page 143 and 144: CZ::NewL() was actually coded waste
Page 145 and 146: TAny*. The cleanup code will deallo
Page 147 and 148: successfully). This means you have
Page 149 and 150: User::Leave(KErrNone). This appears
Page 151 and 152: systems outside my control, and res
Page 153 and 154: Chapter 7: Resource Files Overview
Page 155 and 156: Data Type Description BUF A Unicode
Page 157 and 158: } MENU_ITEM { command = EExampleCmd
Page 159 and 160: A single resource file supports 409
Page 161 and 162: Filename Description EeikCmdExit, a
Page 163 and 164: RESOURCE MENU_PANE r_hellogui_hello
Page 165 and 166: 0E [uncompressed data run length] 0
Page 167 and 168: Chapter 8: Basic APIs Overview We'v
Page 169 and 170: IMPORT_C void Write(TInt aPos, cons
Page 171 and 172: _LIT8(KTxt2," world"); buf->InsertL
Page 173: Dynamic buffers are also used to st
Page 177 and 178: In v7.0, the structure of ROM image
Page 179 and 180: } In a function such as FormatList(
Page 181 and 182: library. The next few pages should
Page 183 and 184: Using this technique, your program
Page 185 and 186: � The original program consisted
Page 187 and 188: pointer, and no method of directly
Page 189 and 190: Figure 9.1 It's a pretty Spartan di
Page 191 and 192: Note 9.2.3 The Controller As descri
Page 193 and 194: TInt iLength; // Length - determine
Page 195 and 196: void SetHit(TInt aX, TInt aY); // H
Page 197 and 198: The functions to do this are Functi
Page 199 and 200: User::After(1) is guaranteed to wai
Page 201 and 202: { public: // Construct/destruct/set
Page 203 and 204: This begins by creating a new windo
Page 205 and 206: ); aRect.iTl.iX+iBorderSize+i*iTile
Page 207 and 208: else gc.SetPenColor(KRgbYellow); gc
Page 209 and 210: control framework needs to know whe
Page 211 and 212: the board. It then uses these coord
Page 213 and 214: Calculate board size in twips, and
Page 215 and 216: iRightBorder.Move(offset); iBoardRe
Page 217 and 218: private: // Construct/restore void
Page 219 and 220: ViewCmdHitFleet() shows how the con
Page 221 and 222: There are no surprises in the comma
Page 223 and 224: }; MENU_ITEM {command=EEikCmdZoomIn
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The framework handles creating a fi
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void TShip::ExternalizeL(RWriteStre
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void CGameAppUi::HandleCommandL(TIn
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the target view. Because such messa
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TInt iCursorX; TInt iCursorY; TUid
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display area) and to handle a parti
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Create and load a bitmap iHideBitma
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This version formats the message ID
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Chapter 10: Dialogs and Concrete Co
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Figure 10.2 I got this by typing Ct
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Finally, note that buttons can't be
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for 'control'. I'll always use 'con
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CEikDialog* dialog = new(ELeave) CE
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Simply put, the dialog has a title,
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OK is handled by OkToExitL(). In fa
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Any of the checks or file operation
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}; id = EGameControlIdProtocol; con
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Listen"; } type = EEikCtChoiceList;
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TUid protocol = TUid::Uid(choicelis
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10.3.2 Adding Buttons If you want t
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Function Description virtual void S
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� specify initialization data for
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CEikBorderedControl CEikBorderedCon
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� eikon.rh and Qikon.rh contain t
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Class Header ID CEikGlobalTextEdito
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UIs provide many other standard dia
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Figure 11.1 As it happens, this scr
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gc.DrawText(*iHelloWorld, rect, bas
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The two points that define Trect ca
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The clipping region defines the reg
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virtual void DrawBitmap(const TRect
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Figure 11.5 From the diagram: � T
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In theory, then, you don't need to
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So far, we have suggested that you
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DrawBorders(); DrawTiles(); } but t
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It turns out that working out exact
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Now it's time to be precise about h
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Figure 11.10 It has a single window
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{ public: . . . static CExampleHell
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case 2: return EAmountOfControls; }
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finished. When the BeginRedraw()fun
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Default settings are assured here:
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First and foremost, a control is a
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class CCoeControl : public CBase {
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You can set a control's position an
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IMPORT_C virtual void Draw(const TR
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� If you select OK on a dialog -
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In this chapter, I've concentrated
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TKeyResponse COppFleetView::OfferKe
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TEventCode is the type of window se
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notification, and changing the curs
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From the preceding discussion, it s
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� if the Set interval button is s
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� The general-purpose control des
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private: ... MCoeControlObserver* i
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Special-purpose events should be ha
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Figure 12.4 Key events are offered
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A control should change its appeara
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12.4.3 Grabbing the Pointer-down Co
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ProcessPointerEventL() implements t
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In the last chapter, we concentrate
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making them lighter or darker. For
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Chapter 13: Files, Streams, and Sto
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Note Strictly, documents are not th
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Figure 13.2 The file server provide
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� changing directory and file att
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important in Symbian OS, so it's pr
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Figure 13.5: � Write file allows
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TryChangeFocusToL(EExampleControlId
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file.Close(); // Finished with user
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Update view iAppView->DrawNow(); }
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} // Finish CleanupStack::PopAndDes
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external stream and de-serialize wh
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RwriteStream Functions RReadStream
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You'll remember that I used this, w
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Technique Application descriptor wh
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Let's consider the file format of t
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� create, write, and close the ap
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Figure 13.10 The main document is a
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through the DBMS. For more on using
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Figure 13.13 There is a small class
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� Where an application's .ini fil
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The first step of the process is to
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END SOURCE 1 icon2mask.bmp SOURCE c
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id=EHelloGuiCmd0; flags=EEikToolBar
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Figure 14.4 abld build winscw udeb
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For the purpose of this book, we'll
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#include RESOURCE AIF_DATA { capti
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1 file(s) copied. When this has fin
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The way the Certificate Generator w
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The body of this file should be obv
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Don't expect the installed applicat
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� Every application should fill t
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� Use bold style for active text
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Overview This chapter discusses wri
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Class Description CExampleApplicati
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Class Description Figure 15.3 conta
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aDeviceRect.Center().iY - boxInPixe
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} fontSpec)); The key function here
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The second case will cause problems
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I'm careful to draw every pixel: I
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SetZoomOutL() works the other way r
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ealistic print code would take acco
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Figure 15.7 The base class for bitm
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lit them efficiently from a shared
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#define KRgbYellow TRgb(0x00ffff) #
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world colors mapped down onto black
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Figure 15.8 The GUI used in the Psi
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In terms of applications, the appli
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Overview So far in this book, we've
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Figure 16.2 The starting point for
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if (iController->Engine().IsMyTurn(
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device, I will have to publish thes
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� If your request didn't get thro
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Communications is full of this kind
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The game will connect and you can s
Page 457 and 458:
Figure 16.9 The controller contains
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iEngine->iOppFleet.SetShipType(aX,
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if(!iController->IsMyTurn()) iEikon
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Of course, the opponent's response
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wrong with it. And it may not alway
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fleet.SetHit(x,y); // update view i
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With this scheme, each chat message
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For a minimum level of skill, the c
Page 473 and 474:
CONE maintains an outstanding reque
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Figure 17.2 It is also worth mentio
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some function that will later gener
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So the scheduler handles precisely
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CActive implements the Cancel() fun
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A RunL() function can stop the acti
Page 485 and 486:
}; Figure 17.9 Member functions her
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Function Description Stop() Decreas
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17.3.1 Maintaining an Outstanding R
Page 491 and 492:
Change visibility of app view text
Page 493 and 494:
static CMultiPartHello* NewL(CActiv
Page 495 and 496:
iTimer.After(iStatus, iDelay); SetA
Page 497 and 498:
I prefer to hide active objects fro
Page 499 and 500:
In active objects, higher priority
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Figure 18.1 Some simple server tran
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A new session has a handle that is
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Figure 18.4 Before any subsessions
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Figure 18.5 When the buffer is full
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Related servers can be run in the s
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� Request the window server to dr
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This is because, when a client thre
Page 515 and 516:
Figure 18.8 18.4.1 Thread Basics Th
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GetDesLength() return this as their
Page 519 and 520:
class RSessionBase : public RHandle
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RSubSessionBase - client-side sub-s
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Bootstrap code for a server should
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The CSharableSession class provides
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RMessage is not intended for deriva
Page 529 and 530:
The GSDP server presented here has
Page 531 and 532:
IMPORT_C TInt GetGdpProtocolInfo(TI
Page 533 and 534:
with all four slots, even if you do
Page 535 and 536:
}; RGsdpSession::Listen() calls CGs
Page 537 and 538:
inline RGsdpSession() : iHandler(0)
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If, in the first step above, the ke
Page 541 and 542:
The GSDP client API implements a sy
Page 543 and 544:
� Function() gives me the request
Page 545 and 546:
Basically, the setter stores its ar
Page 547 and 548:
As we saw in Chapter 17, any API pr
Page 549 and 550:
Many Symbian OS servers use polymor
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construct shutdown timer iShutdown=
Page 553 and 554:
void CGsdpProtocolUpdater::RunL() {
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GSDP clients can select the protoco
Page 557 and 558:
} }; } }; } version_no = 1; display
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} aFromPort, aData); If iLastError
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� The datagram arrives via a GDP
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AddPacket() is a method provided by
Page 565 and 566:
iReceiveMessage.Complete(KErrNone);
Page 567 and 568:
� The client program launches a n
Page 569 and 570:
server.Close(); return died.Int();
Page 571 and 572:
CGsdpScheduler::TServerStart start;
Page 573 and 574:
aStart.SignalL(); CActiveScheduler:
Page 575 and 576:
19.4 Summary In this chapter, we've
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Figure 20.1 Typically, a communicat
Page 579 and 580:
This encapsulation is important, as
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else // Everything was OK, leave th
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suite of protocols: UDP, TCP, ICMP
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member of the GDP-SMS session objec
Page 587 and 588:
This puts it into an initial state,
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void CGdpSmsSender::TSendMsgState::
Page 591 and 592:
If, for some reason, the operation
Page 593 and 594:
RSmsSocketReadStream readstream(iRe
Page 595 and 596:
Bluetooth is composed of a hierarch
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Figure 20.10 shows two sequential o
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As with GDP-SMS, the SendL() functi
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Once connected, the sockets interfa
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err = iListenSocket.Listen(4); User
Page 605 and 606:
iReceiver.iReadSocket.Read(iReceive
Page 607 and 608:
Appendix 1: Example Projects Overvi
Page 609 and 610:
AppForge development software integ
Page 611 and 612:
Psion has a long history of using S
Page 613 and 614:
Appendix 3: TOGS Guide and Referenc
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protected: TUid iDtor_ID_Key; }; CG
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eturn KErrNone; } TInt CGdpLoopback
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packet to the initiating partner: t
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inline RGsdpSession() : iHandler(0)
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Function Description MGsdpPacketHan
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RGCP TOGS is designed to support tu
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Packet structure RGCP uses GSDP as
Page 629 and 630:
State Meaning responses are handled
Page 631 and 632:
Figure A3.10 Here's CRgcpSession's
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void GsdpHandleL(const TDesC8& aDat
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virtual void RgcpHandleBound() = 0;
Page 637 and 638:
State Meaning Listening You have ch
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From To Occurs When other player, t
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Opcode Name Details want-second.Res
Page 643 and 644:
Appendix 4: Emulator Reference Over
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Figure A4.2 This source compatibili
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Figure A4.5 An emulator configurati
Page 649 and 650:
Each Symbian OS .exe built for the
Page 651 and 652:
In different UIs, there can be addi
Page 653 and 654:
ARM data alignment rules are strict
Page 655 and 656:
Key Description W Dump full window
Page 657 and 658:
event handling threads 569 events,
Page 659 and 660:
Application Programming Interfaces
Page 661 and 662:
Boolean data type 55 Boss Puzzle di
Page 663 and 664:
CGsdpSession 650 CanReceivePacket()
Page 665 and 666:
certificate file 472 Certificate Ge
Page 667 and 668:
ServiceL error handling 646 CGsdpSe
Page 669 and 670:
CObjectIx class 614 CodeWarrior deb
Page 671 and 672:
context switching 27 performance is
Page 673 and 674:
CSession class 598, 614, 624 CShara
Page 675 and 676:
text 501 fonts 495 GDI 507 line dra
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const rule, breaking 334 descriptio
Page 679 and 680:
DrawVerticalBorder() function 238 D
Page 681 and 682:
ExternalizeL() function 261 testing
Page 683 and 684:
files 416 copying to emulator 773 s
Page 685 and 686:
G game datagram protocol see GDP pr
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drawing 237 zooming 245 GetZoom() f
Page 689 and 690:
graphics interaction 370 pick corre
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Install() function CActiveScheduler
Page 693 and 694:
graphics interaction handling 370 O
Page 695 and 696:
summary 485 MakeVisible() function
Page 697 and 698:
multithreading 43 MVC 287 controlle
Page 699 and 700:
packets see datagrams palettes 516
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private key 472 privilege boundarie
Page 703 and 704:
ReceiveAllL() 697 ReceivePacket() f
Page 705 and 706:
Revo 23 RFCOMM 701 RFile class 46 v
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RWriteStream 425 streams 430 vs. RF
Page 709 and 710:
CGraphicsContext class 324 SetBrush
Page 711 and 712:
simple getter functions 60 single-p
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Static() function CCoeEnv class 357
Page 715 and 716:
ESOCK sockets server 526 ETEL telep
Page 717 and 718:
TDisplayMode 516 Telephony server 6
Page 719 and 720:
TParsePtr 418 TParsePtrC 418 TPckg
Page 721 and 722:
derivation relationships 75 Unicode
Page 723:
flicker-free redraw 354 invalid reg
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