یک برگه نمودار جدید به Workbook اضافه میکند
نحو
این مثال یک برگه نمودار جدید اضافه میکند
type
TXLSChartType = (
xlsChartTypeColumn,
xlsChartTypeBar,
xlsChartTypeLine,
xlsChartTypePie);
مثال
Carries a single series declaration for the 6-parameter overload. Categories and Values are A1-range strings (e.g. 'Sheet1!$B$2:$B$5')
type
TXLSChartSeriesInfo = record
Name : WideString;
Categories : WideString;
Values : WideString;
end;
نحو
Five overloads cover progressively richer chart-sheet definitions:
// 1) v2.41.0 — name only; default column chart, no titles, no series.
function AddChartSheet(const Name: WideString): TXLSWorksheet;
// 2) v2.41.0 — name + chart type.
function AddChartSheet(
const Name : WideString;
ChartType : TXLSChartType): TXLSWorksheet;
// 3) v2.41.0 — + chart title.
function AddChartSheet(
const Name : WideString;
ChartType : TXLSChartType;
const Title: WideString): TXLSWorksheet;
// 4) v2.41.0 — + category-axis title + value-axis title.
function AddChartSheet(
const Name : WideString;
ChartType : TXLSChartType;
const Title : WideString;
const CatAxisTitle: WideString;
const ValAxisTitle: WideString): TXLSWorksheet;
// 5) v2.42.0 — + array of series (Name + Categories range + Values range).
function AddChartSheet(
const Name : WideString;
ChartType : TXLSChartType;
const Title : WideString;
const CatAxisTitle: WideString;
const ValAxisTitle: WideString;
const Series : array of TXLSChartSeriesInfo): TXLSWorksheet;
یادداشتها
The emitted chart substream covers the BIFF8 framing the spec calls for — BOF (dt=$0020), Chart / PlotGrowth / Frame / Series / SheetProperties / AxesUsed / AxisParent (POS + category axis + value axis + PlotArea + Frame + ChartFormat + chart-kind record + ChartFormatLink + Legend), EOF. Existing chart-sheet round-trip via TXLSCustomChart is unchanged
Series name binding (v2.42.0): each non-empty Series[i].Name is written into the chart substream as a literal series label via a tStr PTG token on the series-name BRAI (id=2). Excel uses this label in the legend and series selector, so multi-series charts show proper captions instead of the default "Series1 / Series2" placeholders
Series range binding (v2.47.0): starting in v2.47.0, the Categories and Values A1-range strings are compiled into real tArea3D cell-range references inside the BRAI, going through the formula compiler and the workbook EXTERNSHEET reference table. Before v2.47.0 these two fields were accepted on the API but emitted as cce=0 placeholders, so the rendered chart was empty. Existing v2.42.0 callers that left Categories / Values empty are unaffected
The returned TXLSWorksheet appears in the Sheets collection and gets a chart-sheet boundsheet entry written on save. Cell-level methods on the result are unsupported — the host worksheet is a chart container, not a data sheet
نمونه
This example builds a workbook with a data sheet and a column chart bound to two columns of that data sheet
var
Series: array of TXLSChartSeriesInfo;
begin
// Populate cells on Sheet1.
Workbook.Sheets[1].Name := 'Data';
// ... fill A1:B5 with categories + values ...
SetLength(Series, 1);
Series[0].Name := 'Quarterly Revenue';
Series[0].Categories := 'Data!$A$2:$A$5';
Series[0].Values := 'Data!$B$2:$B$5';
Workbook.Sheets.AddChartSheet(
'Revenue',
xlsChartTypeColumn,
'Quarterly Revenue',
'Quarter',
'USD',
Series);
Workbook.SaveAs('Revenue.xls', xlExcel97);
end;
Limitations
Per-chart-type formatting details (gap width, bar overlap, pie hole size, marker style) are still emitted at the chart-builder defaults — not yet exposed on the API. Save-and-reopen with Excel preserves the chart sheet's presence, kind, title, axis titles, series captions, and (from v2.47.0) the series data binding
همچنین ببینید