Wiley-World.of.Warcraft.Programming.A.Guide.and.Reference.for.Creating.WoW.Addons

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190 Part II ■ Programming in World of Warcraftand other features the designers have since deemed inappropriate for addons.That early leeway made it relatively trivial—especially with a bit of help fromexternal programs—to write ‘‘grinding bots’’ that would completely controlyour character while you went to the movies. Set it up before work and by thetime you got home you could have gained a few levels and received massiveamounts of loot to sell.A similar problem were ‘‘button masher’’ addons like Emergency Monitorand Decursive. A player could repeatedly press a single key or mouse buttonand the addon would do all the decision-making: who to target, what spell tocast, and so on.Subsequent patches removed these capabilities by marking the offendingfunctions as protected. Protected functions can be called only by built-in code.In addition there is another class of functions that are only protected duringcombat. WoW is able to tell when the running code is from an addon or macroversus a built-in file, so it can prevent the protected function from running inthose cases. Table 11-2 describes a small sampling of protected functions togive you an idea of their nature.Table 11-2: Sample of Protected FunctionsFUNCTIONDESCRIPTIONJumpCauses the character to jumpCastSpellByNameToggleAutoRunTargetUnitPetAttackRegisterUnitWatchAttempts to cast the given spellControls the character’s auto-runTargets the specified unitSends your pet to attackRegisters a frame to be shown/hidden based on a unitThese are just examples. All movement, targeting, ability use, and action barmanipulation functions are completely protected. The API reference section inChapter 27 shows which functions are protected, so you know whether or notyou can call them.NOTE You may be wondering how it is possible to write an action bar or unitframe addon at this point, considering that spell-casting and targeting functionsare protected. This problem is resolved by using secure templates, which arecovered in Chapter 15.Unit Functions Up CloseThe first logical grouping of APIs to examine is unit functions. As previouslymentioned, these functions expose data about players, mobs, and NPCs. Most
Chapter 11 ■ Exploring the World of Warcraft API 191of the functions are quite simple; they take in one or two unit IDs and returnsome information to the calling code. Table 11-3 shows a few of the differentunit functions.Table 11-3: Example Unit FunctionsUNIT FUNCTIONDESCRIPTIONexists =UnitExists(unit)Returns 1 if the unit exists, nil otherwise. For example,UnitExists(“target“) returns 1 only if you have atarget selected. Many of the other unit functions returnnil if UnitExists is nil.name, realm =UnitName(unit)level =UnitLevel(unit)reaction =UnitReaction(unit,otherUnit)health =UnitHealth(unit)mana =UnitPower(unit[,powerType)healthMax =UnitHealthMax(unit)manaMax =UnitManaMax(unit)Returns the name of the specified unit. If the unit is aplayer in a cross-realm battleground, the second return isthe server name, otherwise it is nil.Returns the level of the unit or –1 if you’re not supposedto know the level (special bosses, enemy players morethan 10 levels above you).Determines the reaction of unit to otherUnit. Returnsa number from 1–7, where 1 is extremely hostile, 7 is asfriendly as possible, and nil is returned if unknown.Returns the health of the unit. For the player, the player’spet, party/raid members, and their pets, health is theabsolute number of hit points. All other units return apercentage from 0–100.Same as UnitHealth but for mana, rage, energy, andfocus (collectively referred to as mana throughout theAPI). By default this function returns the current powertype that unit is using, but you can specify a secondargument to query another power type (for example, themana of a druid who is shapeshifted).Returns the maximum health of the unit (actual numberof hit points or 100 depending on the same criteria asUnitHealth).Same as UnitHealthMax but for mana.Each of these functions takes in unit IDs that follow a very simple pattern.A unit ID can be one of the tokens listed in Table 11-4 with either pet addedto the end, or possible target included an arbitrary number of times. Forexample, party1target shows the target of your first party member, andparty2pettarget represents the target of your second party member’s pet.Additionally, the WoW client will accept the name of a party or raid memberas a unit ID. These unit ID tokens are not case-sensitive.
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A Guide and Reference for Creating
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World of Warcraft® Programming: A
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CreditsAcquisitions EditorScott Mey
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xAcknowledgmentsI’d first like to
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xiiContents at a GlanceChapter 13 R
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xivContentsUsing History to Make Ch
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xviContentsExtending Tables with Me
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xviiiContents## Title: 127## Notes:
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xxContentsInvestigating UIPanelTemp
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xxiiContentsAdding an OnEvent Handl
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xxivContentsPreparing for the Token
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xxviContentsWriting an OnUpdate Fun
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xxviii ContentsSummary 496The Code
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xxxContentsChapter 28 API Categorie
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xxxii ContentsTrade Skill Functions
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xxxiv ContentsRequesting Data Befor
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IntroductionSince World of Warcraft
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Introduction xxxixPart II discusses
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CHAPTER1Programming for Worldof War
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Chapter 1 ■ Programming for World
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CHAPTER2Exploring Lua BasicsLua is
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Chapter 2 ■ Exploring Lua Basics
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CHAPTER8Anatomy of an AddonAs discu
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CHAPTER14Tracking Damage withCombat
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CHAPTER16Binding Keys and Clicksto
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338 Part III ■ Advanced Addon Tec
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CHAPTER18Responding to Graphic Upda
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CHAPTER22Creating Scroll FramesWhen
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CHAPTER24Scanning and ConstructingT
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CHAPTER25Taking Protected Actionin
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PartIVReferenceIn This PartChapter
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540 Part IV ■ ReferenceThis notat
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542 Part IV ■ ReferenceAPI Meta-T
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544 Part IV ■ ReferenceRAID—Spe
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546 Part IV ■ Referencezero inten
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548 Part IV ■ ReferenceDigits 7-1
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550 Part IV ■ ReferenceRepresents
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552 Part IV ■ Referenceitemdata
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554 Part IV ■ Reference5. Epic (p
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556 Part IV ■ Referencemouseover
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558 Part IV ■ ReferenceConfirmati
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560 Part IV ■ ReferenceThe Muted
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564 Part IV ■ ReferenceUsable fol
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566 Part IV ■ ReferenceAfter call
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568 Part IV ■ ReferenceCalendarCo
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570 Part IV ■ ReferenceReturns:mo
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572 Part IV ■ ReferenceCalendarCo
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574 Part IV ■ ReferenceCalendarDe
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590 Part IV ■ ReferenceReturns:..
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594 Part IV ■ ReferenceCanComplai
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596 Part IV ■ ReferenceCanGuildDe
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598 Part IV ■ ReferenceReturns:ca
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600 Part IV ■ ReferenceReturns:en
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602 Part IV ■ ReferenceProtectedP
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604 Part IV ■ ReferenceArguments:
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608 Part IV ■ ReferenceBlizzard U
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610 Part IV ■ ReferenceClearLFGAu
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612 Part IV ■ ReferenceautoReturn
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614 Part IV ■ ReferenceCloseBattl
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616 Part IV ■ ReferenceFires the
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618 Part IV ■ ReferenceCombatLogC
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620 Part IV ■ ReferenceCOMBATLOG_
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622 Part IV ■ ReferenceUsable bet
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624 Part IV ■ ReferenceCreateMacr
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626 Part IV ■ ReferenceDeclineNam
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630 Part IV ■ ReferenceThe list o
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634 Part IV ■ ReferenceUsable fol
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640 Part IV ■ ReferenceGMSurveySu
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642 Part IV ■ Referencequantity
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644 Part IV ■ ReferenceThe toolti
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646 Part IV ■ Referencelocal acti
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664 Part IV ■ ReferenceExample:--
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666 Part IV ■ Referencebreakenden
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668 Part IV ■ ReferencevehicleY
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670 Part IV ■ ReferenceReturns:ac
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672 Part IV ■ ReferenceReturns:li
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674 Part IV ■ ReferenceGetCVarMin
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676 Part IV ■ ReferenceReturns:ch
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678 Part IV ■ ReferenceGetChatWin
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680 Part IV ■ ReferenceCR_CRIT_TA
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682 Part IV ■ Referenceenable—1
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684 Part IV ■ Reference-- oops, i
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688 Part IV ■ ReferenceReturns:ti
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690 Part IV ■ ReferenceGetCurrent
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692 Part IV ■ ReferencesubType—
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696 Part IV ■ ReferenceoffhandExp
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700 Part IV ■ ReferenceGetGlyphSo
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702 Part IV ■ ReferenceThis funct
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704 Part IV ■ ReferencenumWithdra
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706 Part IV ■ ReferenceGetGuildEv
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708 Part IV ■ ReferenceReturns:ye
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710 Part IV ■ Referencestationery
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712 Part IV ■ Referencetexture—
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714 Part IV ■ ReferenceReturns:di
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724 Part IV ■ Referencefor stat,
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726 Part IV ■ ReferenceReturns:ma
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728 Part IV ■ ReferenceisLeader
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730 Part IV ■ ReferenceGetLatestC
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732 Part IV ■ ReferenceGetLootRol
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734 Part IV ■ ReferenceGetMacroIn
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736 Part IV ■ ReferenceGetMapInfo
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738 Part IV ■ ReferenceNot all pa
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740 Part IV ■ ReferenceitemCount
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742 Part IV ■ ReferenceBREATH—U
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744 Part IV ■ ReferenceChatFrame1
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746 Part IV ■ ReferenceIf the giv
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748 Part IV ■ ReferenceisFull—1
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750 Part IV ■ ReferenceGetNumComp
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752 Part IV ■ ReferenceGetNumFrie
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754 Part IV ■ Referenceindex—In
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756 Part IV ■ ReferenceOnly valid
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758 Part IV ■ ReferenceGetNumSave
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760 Part IV ■ Referenceinspect—
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762 Part IV ■ ReferenceOnly valid
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766 Part IV ■ ReferenceNote: GetP
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768 Part IV ■ ReferenceReturns:na
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770 Part IV ■ Referencecasting a
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772 Part IV ■ Referenceelseif ( l
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790 Part IV ■ ReferenceGetSelecte
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800 Part IV ■ Referencepet—The
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808 Part IV ■ ReferenceTotem func
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810 Part IV ■ ReferenceGetTradeSk
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812 Part IV ■ ReferenceGetTradeSk
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814 Part IV ■ ReferenceplayerReag
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874 Part IV ■ ReferenceINSECURE
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886 Part IV ■ ReferencePetRenameR
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998 Part IV ■ ReferenceVoiceGetCu
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1046 Part IV ■ ReferenceQuit—At
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1058 Part IV ■ ReferenceGetGuildT
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1074 Part IV ■ ReferenceSecureCmd
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1076 Part IV ■ ReferenceGetMapCon
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1080 Part IV ■ ReferencePitchUpSt
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1082 Part IV ■ ReferenceParty Fun
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1084 Part IV ■ ReferenceGetPetFoo
Page 1128 and 1129:
1086 Part IV ■ ReferenceConfirmBi
Page 1130 and 1131:
1088 Part IV ■ ReferenceUnitChara
Page 1132 and 1133:
1090 Part IV ■ ReferenceGetGossip
Page 1134 and 1135:
1092 Part IV ■ ReferenceGetQuestL
Page 1136 and 1137:
1094 Part IV ■ ReferenceRaid Func
Page 1138 and 1139:
1096 Part IV ■ Referenceissecure
Page 1140 and 1141:
1098 Part IV ■ ReferenceGetSocket
Page 1142 and 1143:
1100 Part IV ■ ReferenceIsAttackS
Page 1144 and 1145:
1102 Part IV ■ ReferenceGetManaRe
Page 1146 and 1147:
1104 Part IV ■ ReferenceGetNumTal
Page 1148 and 1149:
1106 Part IV ■ ReferenceTracking
Page 1150 and 1151:
1108 Part IV ■ ReferenceGetTradeS
Page 1152 and 1153:
1110 Part IV ■ ReferenceIsTrainer
Page 1154 and 1155:
1112 Part IV ■ ReferenceUnitInBat
Page 1156 and 1157:
1114 Part IV ■ ReferenceGetCurren
Page 1158 and 1159:
1116 Part IV ■ ReferenceVehicleAi
Page 1160 and 1161:
1118 Part IV ■ ReferenceDisplayCh
Page 1163 and 1164:
CHAPTER29Widget ReferenceTo respond
Page 1165 and 1166:
Chapter 29 ■ Widget Reference 112
Page 1167 and 1168:
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Page 1175 and 1176:
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Page 1317:
Page 1320 and 1321:
1278 Part IV ■ ReferenceADDON_ACT
Page 1322 and 1323:
1280 Part IV ■ ReferenceCALENDAR_
Page 1324 and 1325:
1282 Part IV ■ ReferenceCHAT_MSG_
Page 1326 and 1327:
1284 Part IV ■ ReferenceCORPSE_OU
Page 1328 and 1329:
1286 Part IV ■ ReferenceGUILDBANK
Page 1330 and 1331:
1288 Part IV ■ ReferenceKNOWLEDGE
Page 1332 and 1333:
1290 Part IV ■ ReferenceOPEN_TABA
Page 1334 and 1335:
1292 Part IV ■ ReferencePLAYER_EN
Page 1336 and 1337:
1294 Part IV ■ ReferenceQUEST_LOG
Page 1338 and 1339:
1296 Part IV ■ ReferenceTRADE_POT
Page 1340 and 1341:
1298 Part IV ■ ReferenceUNIT_PET_
Page 1342 and 1343:
1300 Part IV ■ ReferenceUPDATE_MA
Page 1345:
PartVAppendixesIn This PartAppendix
Page 1348 and 1349:
1306 Part V ■ AppendixesUse Meani
Page 1350 and 1351:
1308 Part V ■ Appendixeshard codi
Page 1352 and 1353:
1310 Part V ■ AppendixesOrganizat
Page 1354 and 1355:
1312 Part V ■ Appendixesespeciall
Page 1356 and 1357:
1314 Part V ■ Appendixesitself to
Page 1358 and 1359:
1316 Part V ■ AppendixesTAIL CALL
Page 1360 and 1361:
1318 Part V ■ AppendixesEach time
Page 1362 and 1363:
1320 Part V ■ AppendixesEven if y
Page 1364 and 1365:
1322 Part V ■ AppendixesEach even
Page 1366 and 1367:
1324 Part V ■ Appendixesthe basic
Page 1368 and 1369:
1326 Part V ■ AppendixesEntering
Page 1371 and 1372:
APPENDIXBUtilizing Addon LibrariesW
Page 1373 and 1374:
Appendix B ■ Utilizing Addon Libr
Page 1375 and 1376:
Page 1377 and 1378:
Page 1379:
Page 1382 and 1383:
1340 Part V ■ AppendixesOne major
Page 1384 and 1385:
1342 Part V ■ Appendixessvn updat
Page 1386 and 1387:
1344 Part V ■ AppendixesGit and M
Page 1388 and 1389:
1346 Part V ■ AppendixesOnce that
Page 1390 and 1391:
1348 Part V ■ Appendixesremote: a
Page 1392 and 1393:
1350 Part V ■ Appendixeshave alre
Page 1394 and 1395:
1352 Part V ■ Appendixesthe other
Page 1396 and 1397:
1354 Part V ■ Appendixesand open
Page 1399 and 1400:
IndexAAbandonQuest, 556AbandonSkill
Page 1401 and 1402:
Index ■ A-B 1359hyperlink, 549-55
Page 1403 and 1404:
Index ■ B-C 1361BuyPetition, 564B
Page 1405 and 1406:
Index ■ C-C 1363Lua library funct
Page 1407 and 1408:
Index ■ C-C 1365storing damage an
Page 1409 and 1410:
Index ■ D-E 1367dropdown frames,
Page 1411 and 1412:
Index ■ F-F 1369TabButtonTemplate
Page 1413 and 1414:
Index ■ G-G 1371GetAchievementNum
Page 1415 and 1416:
Index ■ G-G 1373GetGameTime, 699G
Page 1417 and 1418:
Index ■ G-G 1375GetNumLetters(),
Page 1419 and 1420:
Index ■ G-G 1377GetStatusBarColor
Page 1421 and 1422:
Index ■ G-I 1379GuildInvite, 832G
Page 1423 and 1424:
Index ■ I-K 1381IsPlaying(), Anim
Page 1425 and 1426:
Index ■ L-M 1383Lua interpreterdo
Page 1427 and 1428:
Index ■ O-O 1385OnClick widget sc
Page 1429 and 1430:
Index ■ P-R 1387PlaySoundFile, 89
Page 1431 and 1432:
Index ■ S-S 1389how addon code ca
Page 1433 and 1434:
Index ■ S-S 1391SetInventoryItem(
Page 1435 and 1436:
Index ■ S-S 1393overview of, 337S
Page 1437 and 1438:
Index ■ T-T 1395table.insert, 58-
Page 1439 and 1440:
Index ■ U-U 1397UnitArmor, 962Uni
Page 1441 and 1442:
Index ■ W-W 1399WWebLua, 15well-f
Page 1443:
Your secret weapon againstthe Lich
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