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Text File | 1998-08-19 | 28.8 KB | 1,154 lines | [TEXT/CWIE]

======================================================================== PowerPlant Core Classes Notes ======================================================================== Version: PowerPlant 1.9.1 Date: August 19, 1998 ======================================================================== ======================================================================== Changes Required for Existing Projects ======================================================================== * You may need to add the following files to your project: PP_Constants.cp AppearanceLib UClassicDialogs.cp UModalDialogs.cp UKeyFilters.cp - PP_Constants.cp (inside the PP Headersfolder) contains the definitions of Str_Empty, Point_00, and Rect_0000. Putting these definitions in a .cp file rather than a header saves data space. - Projects with PPC targets must include AppearanceLib. After adding this file (path {Compiler}:MacOS Support:Libraries: MacOS Common), make sure to set the "Import Weak" option by using the Project Inspector (select the file in the project window and choose "Project Inspector" from the Window menu). If you don't "Import Weak", your program will not launch on machines that don't have the Appearance Manager. - The LDocument class uses UClassicDialogs.cp by default, but you should consider using the new Navigation Services support. See the "PP Standard Dialogs Note". - LApplication uses new routines in UModalDialogs.cp and UKeyFilters.cp for displaying alerts. * Removed support for PP_Obsolete_Constants and PP_Obsolete_Array_API * StResource::Release() is now named StResource::Dispose() to adhere to naming conventions used in other classes. * Removed function UGraphicUtils::InitGraphicUtils(). This function just called UEnvironment::InitEnvironment(), so call that function directly if you need to. * Moved the comparison operators for RGBColor, Point, and Rect that were in UGraphicUtils.h to a new file called UQDOperators.h. You may need to #include <UQDOperators.h> in files where you use those operators. * gDebugThrow and gDebugSignal globals moved inside the UDebugging namespace. If you access them directly, you need to qualify the name: PP_PowerPlant::UDebugging::gDebugThrow PP_PowerPlant::UDebugging::gDebugSignal * If you have subclasses of LDocument that use the inherited LDocument::AskSaveAs() function [instead of overriding it], you should override the new LDocument::GetFileType() function to return the file type (four character code) used for saving your documents. The Navigation Services requires this information. Standard File doesn't need to know the file type, so you don't have to override GetFileType() if you use the Classic Dialogs. However, we strongly recommend that you add the override anyway. It's very little code and you'll have to update to Nav Services eventually if you want your program to run natively under Mac OS X. ======================================================================== Significant New Features ======================================================================== * New classes for using Navigation Services (see separate note file about PP Standard Dialogs) * New classes with better support for StandardFile (see separate note file about PP Standard Dialogs) * New LString functions for dealing with floating point numbers using flexible formatting options. * New LString functions for using Int16 numbers * New LStringRef class which lets you use LString functions to manipulate an arbitrary string * New LTabGroupView class. All Panes that are also Commanders enclosed within a LTabGroupView are part of a tab group. Similar to LRadioGroupView. * New UModalAlerts class (within UModalDialogs.h/.cp) with wrappers for the Toolbox Alert() calls. The wrappers deactivate the desktop and supply an event filter for handling events while the alert window is displayed. * New classes for supporting Contextual Menus. * New LAppearanceMBAR class. Calls ::MenuEvent(), a new Menu Manager call introduced with the Appearance Manager that supports menu key equivalents beyond just the Command key. ======================================================================== General Changes ======================================================================== * Added a PowerPlant namespace controlled via macros PP_Macros.h #define's PP_Begin_Namespace_PowerPlant PP_End_Namespace_PowerPlant controlled by the symbol PP_Uses_PowerPlant_Namespace The default value for PP_Uses_PowerPlant_Namespace is 0 (false) for this release. In the future, it will default to true. If you wish to activate the PowerPlant namespace, put #define PP_Uses_PowerPlant_Namespace 1 in your prefix file. If you do activate the PowerPlant namespace, you will need to explicity qualify PowerPlant types or use a "using" declaration. For example, PowerPlant::LPane *thePane; // explicit qualifier or using namespace PowerPlant; // using declaration LPane *thePane; // Refers to PowerPlant::LPane For convenience, you may want to define a namespace alias: namespace PowerPlant { } // Forward declaration namespace PP = PowerPlant; // Alias PP::LPane *thePane; // Use alias. Less typing. The forward declaration of the PowerPlant namespace is needed if you define your alias before #include'ing any PP code, such as in a prefix file. A subtle issue with namespaces occurs with forward class declarations. You need to specify the namespace. For example, class LPane; // Will get errors if using namespaces namespace PowerPlant { // The right way class LPane; // forward declaration with namespaces } Or, if you want to use the conditional macros: PP_Begin_Namespace_PowerPlant class LPane; PP_End_Namespace_PowerPlant Also, don't put your own classes in the PowerPlant namespace. It is reserved for Metrowerks code. Define your own namespace for your code (or use none at all). This will prevent naming conflicts with future releases of PowerPlant. * Use FOUR_CHAR_CODE macro to define constants such as 'abcd' * PP is migrating to use the Universal Header typedef's for integer types in MacTypes.h rather than the ones in PP_Types.h. Type MacTypes PP_Types ---- -------- -------- signed char SInt8 Int8 signed short SInt16 Int16 signed long SInt32 Int32 unsigned char UInt8 Uint8 unsigned short UInt16 Uint16 unsigned long UInt32 Uint32 The PP types are deprecated (still around, but will go away some time in the future). The PP_Uses_Old_Integer_Types preprocessor symbol (see PP_Macros.h) controls whether the PP Types are defined. * Names of all the PowerPlant precompiled header binaries changed to end with ++ (for example, PP_MacHeaders68K++). This conforms to the naming conventions used by the standard MacHeaders files. This change should not affect existing projects, as you should always use the .h file (for example, PP_MacHeaders.h) as a prefix file rather than the precompiled binary file. * Minor re-organization of files within the PowerPlant folder - New "Standard Dialogs" folder contains new files for supporting Navigation Services and Classic Dialogs. Moved UStandardFiles and UModalDialogs files into this folder. - New "Menu Classes" folder contains LMenu, LMenuBar, LMercutioMBAR, and LAppearanceMBAR files. Contextual Menus and Menu Utilities classes that are currently "In Progress" will move here in a later release. ======================================================================== Class Status Changes ======================================================================== * Database classes moved to Obsolete ======================================================================== Source Code Changes ======================================================================== ColorAlertIcons.rsrc -------------------- * Updated to Mac OS 8 versions LAMBevelButtonImp ----------------- * SetValue() New override. Uses StBevelMenuSetter to set the MenuHandle before calling the inherited routine. LAMControlImp ------------- * SetTextTraitsID() Don't set forecolor value and mask if color is black. This lets the Toolbox dim black text when inactive. * DeactivaeSelf() Do nothing if Toolbox control is already inactive. LAMPopupGroupBoxImp ------------------- * PostSetValue() Check for special empty menu rather than nil to determine if we need to draw the popup box LAMStaticTextImp ---------------- * ActivateSelf() * DeactivateSelf() New overrides. Deactivating lightens the text color and activating restores the original color. LAMTabsControlImp ----------------- * FocusImp() Call inherited FocusImp() LAMTrackActionImp ----------------- * TrackAction() Add try/catch block to prevent exception from going back through the Toolbox LAppearanceMBAR --------------- * New class. Use this class instead of LMenuBar (or LMercutioMBAR) to support menu key equivalents beyond the Command key. Requires the Appearance Manager, so you should check for AM beforehand. LApplication ------------ * LApplication() Call UEnvironment::InitEnvironment(). Remove check for ColorQD as InitEnvironment() does that. * ShowAboutBox() Calls UModalAlerts::Alert() LArray ------ * Removed PP_Obsolete_Constants support LArrayIterator -------------- * Removed PP_Obsolete_Constants support LBroadcasterEditField --------------------- * Removed declaration of msg_AllowTargetSwitch constant from header file. PP does not use this constant. LCicnButton ----------- * FindHotSpot() * PointInHotSpot() New overrides. Point is within hot spot if it corresponds to a non-white pixel in the icon mask. LControlImp ----------- * Hilite() New function LControlPane ------------ * Added class_ID of 'cpan' LDialogBox ---------- * LDialogBox() Declared SWindowInfo& as const * HandleKeyPress() Rewrote to use new UKeyFilters::IsEscapeKey() function LDocApplication --------------- * OpenOrPrintDocList() New function. Factors out code for iterating over an AEDescList of files that used to be in DoAEOpenOrPrintDoc(). * DoAEOpenOrPrintDoc() Calls OpenOrPrintDocList() * SendAEOpenDoc() * SendAECreateDocument() Restructured to send AppleEvent with ExecuteAE_No option, and to always call OpenDocument()/MakeNewDocument() * SendAEOpenDocList() New function. Sends an AppleEvent for opening a list of documents for recording, then calls OpenOrPrintDocList(). LDocument --------- * AskSaveAs() Use PP_StandardDialogs::AskSaveFile() instead of StandardPutFile(). Also, handle situation where user "saves file as" using the existing file name. * AskConfirmRevert() New function. Moved code that was in ObeyCommand. Uses new PP_StandardDialogs::AskConfirmRevert() call. * AskSaveChanges() New functions. Moved code that was in AttemptClose() and AttemptQuitSelf(). Use new PP_StandardDialogs::AskSaveChanges() call. * ObeyCommand() Call AskConfirmRevert(). * AttemptClose() * AttemptQuitSelf() Call AskSaveChanges() * GetFileType() New function. Returns the file type (four character code) used for saving Documents. Subclasses should override if they support saving to files. LDragAndDrop ------------ * HandleDragTracking() * HandleDragReceive() * HandleDragSendData() * HandleDragInput() * HandleDragDrawing() Set err to dragNotAcceptedErr when catching an unknown error and don't Signal LEditField ---------- * GetSelection() New override. Passes back an AEDesc of the selected text. * LEditField(LStream*) Turn off autoscroll for right justified text. Due to a bug, this doesn't work. LEditText --------- * GetSelection() New override. Passes back an AEDesc of the selected text. * InitEditText() Turn off autoscroll for right justified text. Due to a bug, this doesn't work. LGAChasingArrowsImp ------------------- * DrawSelf() Draws arrows in gray if inactive * AllocateGWorlds() New function. Contains code that used to be in Init(). * DisposeGWorlds() New function. PP doesn't call this function, but you can if you wish to dispose of the GWorlds used internally by this class. LGAProgressBarImp ----------------- * AllocateGWorlds() New function. Contains code that used to be in Init(). * DisposeGWorlds() New function. PP doesn't call this function, but you can if you wish to dispose of the GWorlds used internally by this class. LGATabsControlImp ----------------- * Fixed struct describing 'tab#' resource. Defined STabListRec and STabInfo structs. * LoadTabTitlesFromTabList() Rewrote to use new struct definitions to access tab information LGrafPortView ------------- * GetForeAndBackColors() New override * DoKeyPress() Changed to return a bool that specifies whether it handled the keystroke. LGrowZone --------- * ~LGrowZone() Set sGrowZone to nil LHierarchyTable --------------- * AddLastChildRow() Changed refreshAdjustment to have a value of 0 or 1 instead of 0 or -1. Avoids warnings about assigning a negative number to an unsigned long variable. LMenu ----- * LMenu() New constructor for creating menus on-the-fly via ::NewMenu() rather than from a resource * MakeNewMacMenu() New static function. Wrapper for ::NewMenu() which can create an Appearance-savvy menu. LMenuBar -------- * FindMenuItem() * FindNextCommand() Declared as "const" LModelDirector -------------- * HandleCreateElementEvent() For case typeObjectSpecifier, assign target to return value of target->GetInsertionTarget(typeNull) For case typeInsertionLoc, handle situation where reference object is the default (application) object. Don't put element in reply AppleEvent if the reply is typeNull. * Removed functions for handling open document and print document AppleEvents: HandleOpenOrPrintEvent() OpenOrPrintEventHandler() There's no need to special case those events. The regular HandleAppleEvent() function that handles all other events works just fine for open document and print document events. * InstallCallBacks() Removed special handlers for open and print events. The generic handler is sufficient. * AppleEventHandler() * CreateElementEventHandler() * ModelObjectAccessor() * ModelObjectListAccessor() * OSLDisposeToken() * OSLCompareObjects() * OSLCountObjects() Set err to errAEEventNotHandled or errNoSuchObject when catching an unknown error and don't Signal * OSLCompareObjects() Implemented workaround for Apple's unlocked Handle bug as discussed in Technote 1095. LModelObject ------------ * HandleClone() For case typeInsertionLoc, handle situation where reference object is the default (application) object. LOffscreenView -------------- * Draw() Erase to background color before calling LView::Draw() to be consistent with what happens when drawing offscreen * DrawOffscreen() Call FocusExposed() instead of (IsVisible() && FocusDraw()). It does the same thing. LOutlineTable ------------- * GetLocalCellRect() New override which does NOT set the rectangle to {0, 0, 0, 0} if the Image is outside the Frame. * InsertCols() Added default parameter values for inDataPtr, inDataSize, and inRefresh. LPageController --------------- * SetSelectedPageButtonByIndex() Removed bounds checks since LArray::FetchItemAt() checks the bounds * GetPageIndex() Call to FetchIndexOf() was wrong. Need to pass address of pageButton. * GetTextTraitsID() * GetCurrentIndex() * GetPageButtonView() Declared non-virtual and const * GetPageButtons() * GetNextIndex() * GetControllerMessage() * HaveScrollArrows() * HaveScrolling() Declared non-virtual * RevealSelectedPageButton() Handle case where buttons need to scroll to the right LPane ----- * GetSelection() New function. Override to pass back an AEDesc describing the current selection within the Pane (if the concept of a selection is meaningful). LPlaceHolder ------------ * InstallOccupant() * RemoveOccupant() Declared virtual LPopupGroupBox -------------- * Use kControlGroupBoxMenuHandleTag instead of kControlPopupButtonMenuHandleTag. The two constants are the same now, but may be different under Allegro. LPrintout --------- * GetForeAndBackColors() New override * Declared EPrintAttr as a typedef UInt32 instead of an enum LScrollBar ---------- * ActivateSelf() New override. Set hiliting to kControlNoPart. * DeactivateSelf() New override. Set hiliting to kControlDisabledPart. LScrollerView ------------- * ActivateSelf() Don't show scroll bars. LScrollBar activates them. * DeactivateSelf() Don't hide scroll bars. LScrollBar deactivates them. * InvalidateBorder() New function called when activating/deactivating to redraw the border with the right color. * ListenToMessage() Call AdjustScrollBars() for case msg_ThumbDragged LSharable --------- * LSharable() [copy constructor] * operator = () New functions. Copy has no users. LStdControlImp -------------- * Hilite() New override. Calls ::HiliteControl() * FocusImp() Set text traits of both the current and control owner port (if they are different) LStdPopupMenu ------------- * GetMacMenuH() Check for nil dataH Declared "const" LStdScrollBarImp ---------------- * TrackAction() Add try/catch block to prevent exception from going back through the Toolbox LString ------- * CStringLength() Made more efficient by consolodating "for" and "if" statements into a single "while" loop. * Removed operator double_t() Replaced by operator double() and operator long double(). * operator double() Conversion operator which interprets the string as a double floating point number * operator long double() Conversion operator which interprets the string as a long double floating point number * Assign( long double ) with formatting Two versions for setting a string from a long double number. One version uses an optional formatting string, the other uses formatting data structures (which you can get from FetchFloatFormat). These functions call ExtendedToString(), which gives you much more control over the number format than the Assign( double_t ) function, which calls dec2str(). * Assign( double_t ) changed to Assign( long double ) Existing Assign from floating point changed to use long double instead of double_t. * FetchFloatFormat() Static utility which passes back Toolbox data structures for number formatting given a formatting string. For information about formatting strings, see IM:Text 5-39 The formatting information controls how a floating point number is represented as a string. This information includes localization data such as the decimal and thousands separator (period vs. comma). * StringToLongDouble() Two overloaded static utilities for converting a Pascal string to a long double number. One version uses a formatting string, the other uses formatting data structures (which you can get from FetchFloatFormat). * Assign( Handle ) When Handle is bigger than the string, copy as much as fits rather than nother. * operator = ( Int16 ) * Assign( Int16 ) * operator += ( Int16 ) * Append( Int16 ) New functions. Convert Int16 to a string. Similar to Int32 versions of these functions. LStr255 ------- * New constructors from long double with formatting which call the corresponding Assign() functions. * New constructor and operator= from Int16 LStringRef ---------- * New subclass of LString which doesn't allocate space for the string. It relies on the client to set the StringPtr to an existing string. Thus you can use the functions of the LString class on a string stored in another data structure. For example, FSSpec mySpec; // File Specification // ... Code which obtains an FSSpec ... // Make LStringRef that points to the name // field within the FSSpec LStringRef fileName(sizeof(mySpec.name), mySpec.name); // Now we can manipulate the file name using // LString functions fileName += " copy"; // Append text to file name LTextEditView ------------- * GetSelection() New override. Passes back an AEDesc of the selected text. LToggleButton ------------- * Defined a copy constructor LView ----- * ScrollImageBy() Calling UpdatePort() before calling ScrollBits(). This fixes problems when the view scrolls while there is a pending update event LWindow ------- * Declared EWindAttr values as const's instead of part of an enum * Defined window_InFront and window_InBack as const's instead of #define's * SendAESetZoom() Restructured to send AppleEvent with ExecuteAE_No option and to always call DoSetZoom() PowerPlant Resorcerer TMPLs --------------------------- * Added definitions in 'PPob' for: LTabGroupView LCMAttachment PowerPlant.r ------------ * Added definitions in 'PPob' for: LTabGroupView LCMAttachment PP Copy & Customize.ppob ------------------------ * Created default Txtr resources for system font (128) and application font (129). They are set to default settings (size 0, normal style, default justification, srcCopy). * Added two strings to STR# 200 for the titles of the Nav Services open and save dialogs PP Copy & Customize.rsrc ------------------------ * Set attributes of ALRT/DITL 204 (Low memory warning) to preloaded and locked instead of purgeable. This way, these resources are always present so they don't need to be loaded in low memory situations. PP DebugAlerts.rsrc ------------------- * Set attributes of ALRT/DITL resources (throw and signal alerts) to preloaded and locked instead of purgeable. Also made the text area larger to accommodate long error messages. PP_Constants.h -------------- * Defined constants for ExecuteAE_Yes and ExecuteAE_No for specifying whether or not to execute an AppleEvent * Declared Str_Empty, Point_00, and Rect_0000 as extern and put actual definitions inside PP_Constants.cp * Defined delay_Feedback constant for specifying the number of ticks to delay when presenting visual feedback PP_KeyCodes.h ------------- * Added char_Dash constant PP_MacHeaders.c --------------- * Updated to Universal Headers 3.1 PP_Macros.h ----------- * Removed support for PP_Obsolete_Constants and PP_Obsolete_Array_API * Added macros for a PowerPlant namespace * Added macros for choosing implmentation of standard dialogs * Added macro for whether to use the old PP integer types PP_Resources.h -------------- * Added definitions of PP and Toolbox resources types using the FOUR_CHAR_CODE() macro (from <ConditionalMacros.h>): ResType_PPob ResType_IDList ResType_MenuCommands ResType_AETable ResType_TextTraits ResType_MacWindow ResType_MenuBar ResType_MenuDefProc ResType_Driver * Added constant for new strings in STRx_Standards const SInt16 str_OpenDialogTitle = 3; const SInt16 str_SaveDialogTitle = 4; These strings are used for the titles of the Nav Services open and save dialogs StAEDescriptor -------------- * Dispose() New function which disposes the AEDesc and resets it to a null descriptor * IsNull() New functions which returns whether the AEDesc is a null descriptor * operator = () * Assign() New functions for setting an existing descriptor to a new value. Supported value types are: StAEDescriptor& Boolean SInt16 SInt32 OSType ConstStringPtr FSSpec StDeleter --------- * StDeleter() Added default constructor * StDeleter(T*) Removed default parameter value of nil so that this is no longer the default constructor StFractionalPenWidth -------------------- * ~StFractionalPenWidth() Reset lineWidthP after call to PicComment() since Handle might have moved StHandleBlock ------------- * StHandleBlock() Copy Constructor Check for nil Handle before copying * operator=() Check for nil Handle and don't take ownership unless copy succeeds * Dispose() Changed to work for Handles that are resources * IsValid() New function. Returns true if Handle isn't nil. * IsAResource() New function. Returns whether the Handle is a Resource. StHandleLocker -------------- * Adopt() * Release() * RestoreLockState() New functions * StHandleLocker() Changed to use Adopt() * ~StHandleLocker() Changed to use RestoreLockState() StMenuHandleDisposer -------------------- * New class whose destructor disposes of a MenuHandle (defined in LMenu.h) StPointerBlock -------------- * IsValid() New function. Returns true is Ptr isn't nil. StResource ---------- * Changed name of Release() to Dispose() to match the naming conventions used by StHandleBlock and StDeleter. Also improved the test for determining whether the Handle is not a Resource anymore (i.e., it was detached). * Adopt() New function which replaces the underlying Resource handle * Declared, but didn't implement, copy constructor and assignement operator in order to disallow those functions * Get() New function. Returns the Resource handle. * IsValid() New function. Returns true if Resource handle isn't nil. StUnhiliteMenu -------------- * Don't unhilite menu until at least 8 ticks have passed. For key commands, this leaves the menu title hilited long enough for the user to notice it. StVisRgn -------- * StVisRgn() Use inPort instead of mGrafPtr when saving top left. Both point to the same port, but the code is smaller using the local variable rather than the member variable. TArray ------ * Removed PP_Obsolete_Array_API support * TArray() Added "true" default constructor with no parameters, not even ones with default values. This works around a problem where the compiler would warn about non-inlined functions for classes that have TArray member variables. * TArray(LComparator*, Boolean) Removed default value of nil for LComparator* so that this is no longer the default constructor. TString ------- * New constructors from long double with formatting which call the corresponding Assign() functions. * New constructor and operator= from Int16 UAppleEventsMgr --------------- * Removed definition of AETable_Type constant, replacing it with resType_AETable which is defined in PP_Resources.h UControlRegistry ---------------- * RegisterClasses() If Appearance version is less than 1.0.1 (AM 1.0 shipped with Mac OS 8.0), register the GA imps for LPopupButton and LPopupGroupBox. Those classes require AM 1.0.1 or later. UDebugging ---------- * Changed UDebugging from a class with all static members to a namespace. Code accessing members still use the UDebugging:: qualifier, but it's a namespace rather than a class. * debugAction_LowLevelDebugger and debugAction_SourceDebugger are now obsolete constants (but still defined). There is a single debugAction_Debugger constant. The separate low-level/source options aren't needed since the MW Debugger has a preference option for controlling whether it intercepts Debugger() calls or not. * The following macros for breaking into the debugger are obsolete: BreakToLowLevelDebugger_ BreakStrToLowLevelDebugger_ BreakToSourceDebugger_ BreakStrToSourceDebugger_ Just call Debugger or DebugStr directly and set the MW Debugger preference option for whether to break into the source or low-level debugger. * Moved gDebugThrow and gDebugSignal globals inside the UDebugging namespace. * SetDebugThrow() * SetDebugSignal() * GetDebugThrow() * GetDebugSignal() New functions for accessing the gDebugThrow and gDebugSignal static variables You can still use the SetDebugThrow_ and SetDebugSignal_ macros instead of the "set" accessor functions. * DebugThrow() New inline function which contains code that used to be in the Throw_() macro Checks debugAction_Debugger instead of the obsolete debugAction_LowLevelDebugger and debugAction_SourceDebugger * Throw_() Macro now calls UDebugging::DebugThrow() inline function * SignalPStr_() Checks debugAction_Debugger instead of the obsolete debugAction_LowLevelDebugger and debugAction_SourceDebugger UEnvironment ------------ * InitEnvironment() - Fixed test for Appearance version 1.0.1 UKeyFilters ----------- * IsEscapeKey() New function which returns whether a key down event is an escape key press UQDOperators ------------ * New header file defining inline comparison operators for the QuickDraw types RGBColor, Point, and Rect UScreenPort ----------- * Dispose() Call ClosePort() or CloseCPort() UStandardFile ------------- * GetDirectory() Changed name of parameter from ioReply to outReply since it is an output only parameter. Changed to use functions in UClassicDialogs. This function is almost identical to UClassicDialogs::AskChooseFolder(). The only difference is that GetDirectory() lets you specify the ID of the DLOG resource. * FileFilter_Directories() * DialogHook_SelectDirectory() * SetSelectButtonTitle() Removed. Equivalent functions are in UClassicDialogs. UTextDrawing ------------ * DrawWithJustification() Call TextWidth() to see if all text fits on one line before calling StyledTextBreak(). This works around an apparent bug in StyledTextBreak when the text is exactly the same width as the rectangle in which to draw. UTextTraits ----------- * SetTETextTraits() Adjusted logic to remove "return" from middle of function