How To Automate Excel to Create a New Workbook from Delphi

Summary

This article demonstrates how to create and manipulate an Excel workbook using Automation from Delphi.

More Information

This article parallels other articles that describe the same process using different languages. For more information, please see the following articles in the Microsoft Knowledge Base:
219151 How To Automate Microsoft Excel from Visual Basic

179706 How To Use MFC to Automate Excel and Create/Format a New Workbook

219430 How To Create and Format an Excel Workbook Using Visual J++

Building the Automation Sample

  1. Start Delphi. A new project should be created by default.
  2. Add a button to Form1.
  3. Replace the contents of the code window for Unit1 with the following:
    unit Unit1;

    interface

    uses
    Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
    StdCtrls;

    type
    TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure DisplayQuarterlySales(oWS : Variant);
    private
    { Private declarations }
    public
    { Public declarations }
    end;

    var
    Form1: TForm1;

    Const xlVAlignCenter = -4108;
    Const xlThin = 2;
    Const xlEdgeBottom = 9;
    Const xlDouble = -4119;
    Const xlThick = 4;
    Const xl3DColumn = -4100;
    Const xlColumns = 2;
    Const xlLocationAsObject = 2;

    implementation

    uses ComObj;

    {$R *.DFM}

    procedure TForm1.DisplayQuarterlySales(oWS : Variant);
    var
    oResizeRange, oChart, oSeries: Variant;
    iNumQtrs,iRet : Integer;
    sMsg : String;
    begin
    // Determine how many quarters to display data for
    for iNumQtrs := 4 downto 2 do
    begin
    sMsg := 'Enter sales data for ' + IntToStr(iNumQtrs) + ' quarter(s)?';
    if MessageDlg(sMsg,mtConfirmation,[mbYes,mbNo],0) = mrYes then
    break;
    end;
    sMsg := 'Displaying data for ' + IntToStr(iNumQtrs) + ' quarter(s).';
    MessageDlg(sMsg,mtInformation,[mbOK],0);

    // Starting at E1, fill headers for the number of columns selected
    oResizeRange := oWS.Range['E1:' + Chr(Ord('E') + iNumQtrs - 1) + '1'];
    oResizeRange.Formula := '="Q" & COLUMN()-4 & CHAR(10) & "Sales"';


    // Change the orientation and WrapText properties for the headers
    oResizeRange.Orientation := 38;
    oResizeRange.WrapText := True;

    // Fill the interior color of the headers
    oResizeRange.Interior.ColorIndex := 36;

    // Fill the columns with a formula and apply a number format
    oResizeRange := oWS.Range['E2:' + Chr(Ord('E') + iNumQtrs - 1) + '6'];
    oResizeRange.Formula := '=RAND()*100';
    oResizeRange.NumberFormat := '$0.00';

    // Apply borders to the Sales data and headers
    oResizeRange := oWS.Range['E1:' + Chr(Ord('E') + iNumQtrs - 1) + '6'];
    oResizeRange.Borders.Weight := xlThin;

    // Add a totals formula for the sales data and apply a border
    oResizeRange := oWS.Range['E8:' + Chr(Ord('E') + iNumQtrs - 1) + '8'];
    oResizeRange.Formula := '=SUM(E2:E6)';
    oResizeRange.Borders.Item[xlEdgeBottom].LineStyle := xlDouble;
    oResizeRange.Borders.Item[xlEdgeBottom].Weight := xlThick;

    // Add a chart for the selected data
    oResizeRange := oWS.Range['E2:' + Chr(Ord('E') + iNumQtrs - 1) + '6'];
    oChart := oWS.Parent.Charts.Add;
    oChart.ChartWizard(oResizeRange,xl3DColumn,,xlColumns);

    oResizeRange := oWS.Range['A2:A6'];
    oChart.SeriesCollection.Item[1].XValues := oResizeRange;
    iRet := oChart.SeriesCollection.Count;
    for iRet := 1 to iNumQtrs do
    begin
    sMsg := '="Q' + IntToStr(iRet) + '"';
    oChart.SeriesCollection.Item[iRet].Name := sMsg;
    end;
    oChart.Location(xlLocationAsObject,oWS.Name);

    // Move the chart so as not to cover your data
    oWS.Shapes.Item(1).Top := oWS.Rows.Item[10].Top;
    oWS.Shapes.Item(1).Left := oWS.Columns.Item[2].Left
    end;

    procedure TForm1.Button1Click(Sender: TObject);
    var
    oXL, oWB, oSheet, oRng, VArray : Variant;
    begin
    // Start Excel and get Application Object
    oXL := CreateOleObject('Excel.Application');
    oXL.Visible := True;

    // Get a new workbook
    oWB := oXL.Workbooks.Add;
    oSheet := oWB.ActiveSheet;

    // Add table headers going cell by cell
    oSheet.Cells[1,1] := 'First Name';
    oSheet.Cells[1,2] := 'Last Name';
    oSheet.Cells[1,3] := 'Full Name';
    oSheet.Cells[1,4] := 'Salary';

    // Format A1:D1 as bold, vertical alignment = center
    oSheet.Range['A1:D1'].Font.Bold := True;
    oSheet.Range['A1:D1'].VerticalAlignment := xlVAlignCenter;

    // Create an array to set multiple values at once
    VArray := VarArrayCreate([0,4,0,1],varVariant);
    VArray[0,0] := 'John';
    VArray[0,1] := 'Smith';
    VArray[1,0] := 'Tom';
    VArray[1,1] := 'Brown';
    VArray[2,0] := 'Sue';
    VArray[2,1] := 'Thomas';
    VArray[3,0] := 'Jane';
    VArray[3,1] := 'Jones';
    VArray[4,0] := 'Adam';
    VArray[4,1] := 'Johnson';


    // Fill A2:B6 with an array of values
    oSheet.Range['A2:B6'] := VArray;

    // Fill C2:C6 with a relative formula (=A2 + ' ' + B2)
    oRng := oSheet.Range['C2:C6'];
    oRng.Formula := '=A2 & " " & B2';

    // Fill D2:D6 with a formula (=RAND()*100000) and apply format
    oRng := oSheet.Range['D2:D6'];
    oRng.Formula := '=RAND()*100000';
    oRng.NumberFormat := '$0.00';

    // Autofit columns A:D
    oRng := oSheet.Range['A1:D1'];
    oRng.EntireColumn.AutoFit;



    // Manipulate a variable number of columns for Quarterly Sales Data
    DisplayQuarterlySales(oSheet);

    // Make sure Excel is visible and give the user control

    // of Microsoft Excel's lifetime
    oXL.Visible := True;
    oXL.UserControl := True;

    end;

    end.
  4. Press the F9 key to run the project. Click the button and Microsoft Excel should start and display a sample worksheet.NOTE: Delphi is manufactured by Borland (Inprise Corporation), a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance of reliability. Contact Inprise for any developer support regarding the Delphi language.

References

For more information on Office Automation, please visit the Microsoft Office Development support site at:
Properties

Article ID: 231614 - Last Review: Mar 23, 2009 - Revision: 1

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