Athena Widget Set - C Language Interface - X Consortium ... - X.Org

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Text WidgetsFunction Inherit with Public Interface must specifyMaxHeightXtInherit-MaxHeightXawTextSinkMaxHeightGetCursorBoundsDisplaying TextSetTabs XtInheritSetTabs XawTextSinkSetTabsXtInheritGetCursorBoundsXawTextSinkGetCursorBoundsTo display a section of the text buffer contained in the text source use the functionDisplayText:void DisplayText( w, y, pos2, highlight);nonoyeswxypos1pos2highlightSpecifies the TextSink object.Specifies the x location to start drawing the text.Specifies the y location to start drawing text.Specifies the location within the text source of the firstcharacter to be printed.Specifies the location within the text source of the lastcharacter to be printed.Specifies whether or not to paint the text region highlighted.The Text widget will only pass one line at a time to the text sink, so this functiondoes not need to know how to line feed the text. It is acceptable for this functionto just ignore Carriage Returns. x and y denote the upper left hand corner of thefirst character to be displayed.Displaying the Insert PointThe function that controls the display of the text cursor is InsertCursor. Thisfunction will be called whenever the text widget desires to change the state of, ormove the insert point.void InsertCursor( w, y, state);wxystateSpecifies the TextSink object.Specifies the x location of the cursor in Pixels.Specifies the y location of the cursor in Pixels.Specifies the state of the cursor, may be one of XawisOn orXawisOff.X and y denote the upper left hand corner of the insert point.85
Text WidgetsClearing Portions of the Text windowTo clear a portion of the Text window to its background color, the Text widget willcall ClearToBackground. The TextSink object already defines this function as callingXClearArea on the region passed. This behavior will be used if you specify XtInheritClearToBackgroundfor this method.void ClearToBackground( w, y, height);wxywidthheightSpecifies the TextSink object.Specifies the x location, in pixels, of the Region to clear.Specifies the y location, in pixels, of the Region to clear.Specifies the width, in pixels, of the Region to clear.Specifies the height, in pixels, of the Region to clear.X and y denote the upper left hand corner of region to clear.Finding a Text Position Given Pixel ValuesTo find the text character position that will be rendered at a given x location theText widget uses the function FindPosition:void FindPosition( w, fromPos, width, stopAtWordBreak, *pos_return,*height_return);wfromPosfromXwidthstopAtWordBreakpos_returnwidth_returnheight_returnSpecifies the TextSink object.Specifies a reference position, usually the first characterin this line. This character is always to the leftof the desired character location.Specifies the distance that the left edge of fromPos isfrom the left edge of the window. This is the referencex location for the reference position.Specifies the distance, in pixels, from the referenceposition to the desired character position.Specifies whether or not the position that is returnedshould be forced to be on a word boundary.Returns the character position that corresponds tothe location that has been specified, or the workbreak immediately to the left of the position if stopAt-WordBreak is True.Returns the actual distance between fromPos andpos_return.Returns the maximum height of the text betweenfromPos and pos_return.This function need make no attempt to deal with line feeds. The text widget willonly call it one line at a time.86
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Athena Widget Set -C Language Inter
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Table of Contents1. Athena Widgets
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Athena Widget Set -C Language Inter
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Athena Widgetsand The Intrinsicswid
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Athena Widgetsand The Intrinsics•
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Athena Widgetsand The IntrinsicsDRD
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Using Widgetsapplication_classoptio
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Using WidgetsName Class Type Defaul
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Using Widgetsapp_contextSpecifies t
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Using Widgetsnum_argsSpecifies the
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Using Widgets6. When the argument l
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Using Widgetseither the name used t
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Using WidgetsArg arglist[10];arglis
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Simple WidgetsSuperclass LabelResou
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Simple Widgets• Processing applic
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Simple WidgetsName Class Type Notes
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Simple WidgetsResourceswill allow i
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Simple WidgetsResourcesWhen creatin
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Simple WidgetsforegroundA pixel val
Page 39 and 40: Simple WidgetsresizeSpecifies a Boo
Page 41 and 42: Simple WidgetsName Class Type Notes
Page 43 and 44: Simple WidgetssliderWidthPanner Act
Page 47 and 48: Simple WidgetsRepeater ActionsThe R
Page 51 and 52: Simple Widgetsbacks and passes eith
Page 53 and 54: Simple WidgetsSimple Widget\ * reso
Page 55 and 56: Simple WidgetsResourcesThe StripCha
Page 57 and 58: Simple Widgetsvoid(*getValueProc)(
Page 61 and 62: Simple Widgetsnotify()When the Togg
Page 63 and 64: Chapter 4. MenusThe Athena widget s
Page 65 and 66: MenusNotify(\|)Called when the user
Page 67 and 68: MenusleftBitmaprightBitmapThis is a
Page 69 and 70: Chapter 5. Text WidgetsThe Text wid
Page 71 and 72: Text Widgetswill be insensitive and
Page 73 and 74: Text WidgetsTwoThreeFourFiveSelect
Page 75 and 76: Text Widgetsscroll-one-line-up()scr
Page 77 and 78: Text Widgetskill-to-end-of-paragrap
Page 79 and 80: Text Widgetsreconnect-im()The popup
Page 81 and 82: Text WidgetsText FunctionsLeft: bac
Page 83 and 84: Text Widgetsint XawTextReplace( w,
Page 85 and 86: Text WidgetsCalling this function i
Page 87 and 88: Text WidgetsClass Header fileClassC
Page 89: Text WidgetsResourcesClass Name Tex
Page 93 and 94: Text WidgetsFinding the Size of the
Page 95 and 96: Text WidgetsXawTextPosition Read( w
Page 97 and 98: Text Widgetstypevalue_returnlength_
Page 99 and 100: Text WidgetsResourcesSuperclass Tex
Page 101 and 102: Text WidgetsBoolean XawAsciiSaveAsF
Page 103 and 104: Text WidgetsName Class Type Notes D
Page 105 and 106: Chapter 6. Composite and Constraint
Page 107 and 108: Composite and ConstraintWidgetsName
Page 111 and 112: Composite and ConstraintWidgetsLayo
Page 113 and 114: Composite and ConstraintWidgets{Wid
Page 117 and 118: Composite and ConstraintWidgetsAppl
Page 123 and 124: Composite and ConstraintWidgets: Gr
Page 125 and 126: Composite and ConstraintWidgetsReso
Page 129 and 130: Composite and ConstraintWidgetsAppl
Page 131 and 132: Composite and ConstraintWidgetsLayo
Page 133 and 134: Creating New Widgets(Subclassing)It
Page 135 and 136: Creating New Widgets(Subclassing)dr
Page 137 and 138: Creating New Widgets(Subclassing)st
Page 139 and 140: Creating New Widgets(Subclassing)In
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AcknowledgmentsDonna ConverseMIT X
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Athena Widget Set - C Language Interface - X Consortium ... - X.Org

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