TRColumn

Fuente: source/classes/rcolumn.prg

Standalone class

TRColumn represents a single column within a TReport. It defines how data is retrieved, formatted, and displayed for each column in a printed report. Columns support totals, cumulative totals, memo fields, images, progress bars, and inline charts.

Key DATA Members

DATA	Type	Description
`oReport`	Object	Parent TReport object this column belongs to
`aData`	Array	Array of codeblocks retrieving field values for each line
`aTitle`	Array	Column heading lines
`aPicture`	Array	Picture clauses for formatting column data
`nWidth`	Numeric	Column width in report units
`nTotal`	Numeric	Running total accumulator
`lTotal`	Logical	Enable column total display
`lMemo`	Logical	Treat column as multi-line memo text
`lImage`	Logical	Treat column as image display
`lProgBar`	Logical	Render column as a progress bar
`lCumTotal`	Logical	Enable cumulative running total
`nAlignTitle`	Numeric	Title text alignment
`bDataFont`	Codeblock	Data font selector (returns font index)
`bColor`	Codeblock	Conditional color codeblock
`cChartStyle`	Character	Inline chart style ("BAR", "PIE", etc.)

Methods

Method	Description
`New( aTitle, nCol, aData, nSize, aPicture, bFont, lTotal, bTotalExpr, cFmt, lShadow, lGrid, nPen, oReport, lCumTotal )`	Create a new TRColumn instance
`SayTitle( nRow, nCol, nLine )`	Render column title at the specified position
`SayData( nRow, nCol, nLine )`	Render data value at the specified position
`SayTotal( nRow, nCol )`	Render total value at the specified position
`Stabilize( nOrder )`	Calculate column dimensions and prepare for rendering
`LineCount()`	Return the number of lines this column occupies
`DrawChart( oRect )`	Draw an inline chart (bar/pie) within the column area
`DrawProgBar( oRect )`	Draw a progress bar within the column area
`Separator( nRow, lForced )`	Draw a separator line at the given row

Example: Column with Total

#include "FiveWin.ch"
#include "report.ch"

function BuildReport()

   local oReport, oCol

   REPORT oReport TITLE "Sales Report" PREVIEW

   COLUMN oCol TITLE "Product" DATA { || oSale:Product }
   COLUMN oCol TITLE "Amount" ;
          DATA { || oSale:Amount } ;
          PICTURE "999,999.99" ;
          TOTAL

   END REPORT

   ACTIVATE REPORT oReport

return nil

Notes

TRColumn is created implicitly when using the COLUMN command inside a REPORT block.
Set lTotal := .T. to enable automatic totaling for numeric columns.
The lCumTotal flag accumulates totals across groups rather than resetting per group.
Memo columns (lMemo := .T.) support multi-line text wrapping within the column width.
Image columns (lImage := .T.) display bitmaps retrieved by the data codeblock.
Columns support inline bar charts via cChartStyle and chartdata data members.

TRColumn

Key DATA Members

Methods

Example: Column with Total

Notes

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