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ACC2000: How to Create an MS Graph in PowerPoint Using Access

This article was previously published under Q200551
Advanced: Requires expert coding, interoperability, and multiuser skills.

SUMMARY
This article shows you how to use Automation to create a Microsoft Graphobject on a Microsoft PowerPoint slide from Microsoft Access by using a Microsoft Access table.

MORE INFORMATION
Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements. CAUTION: If you follow the steps in this example, you modify the sample database Northwind.mdb. You may want to back up the Northwind.mdb file and follow these steps on a copy of the database.

To create a Graph version 9.0 object on a PowerPoint slide, follow these steps:

NOTE: The sample code in this article uses Microsoft Data Access Objects. For this code to run properly, you must reference the Microsoft DAO 3.6 Object Library. To do so, click References on the Tools menu in the Visual Basic Editor, and make sure that the Microsoft DAO 3.6 Object Library check box is selected.

  1. Open the sample database Northwind.mdb.
  2. Create a module and type the following line in the Declarationssection, if it is not already there:
    Option Explicit					
  3. Type the following procedures:
    Option Compare DatabaseFunction CreateGraphFromFile(CGFF_PPTFileName As String, _  CGFF_Tablename As String, CGFF_SavedPPT As String) As Boolean    '********************************************************************    'Function:  CreateGraphFromFile    'Purpose:   Create a graph on a PowerPoint Slide using a Microsoft    '           Access table.    '    'Arguments: CGFF_PPTFilename - name of the new PowerPoint presentation    '           file that you want to create. You must include the file    '           name and path.    '    '           CGFF_Tablename- name of the Microsoft Access table or query    '    '           CGFF_SavedPPT - name of a previously saved PowerPoint    '           presentation with a graph object already on it. An    '           empty string ("") if you want to use a blank presentation    '    '    'Returns:  True if successful or False if not.    '    '****************************************************************   On Error GoTo ERR_CGFF   Dim oDataSheet As Object   Dim shpGraph As Object, Shpcnt As Integer, FndGraph As Boolean   Dim lRowCnt, lColCnt, lValue As Long, CGFF_FldCnt As Integer   Dim OPwrPnt As Object, OpwrPresent As Object   Dim CGFF_DB As DAO.Database, CGFF_TD As DAO.TableDef   Dim CGFF_Rs As DAO.Recordset, CGFF_field As DAO.Field   Dim CGFF_PwrPntloaded As Boolean   Dim lheight, lwidth, LLeft, lTop As Single   ' See if the CGFF Table already exists.   If IsTableQuery("", CGFF_Tablename) Then      Set CGFF_DB = CurrentDb      Set CGFF_Rs = CGFF_DB.OpenRecordset(CGFF_Tablename, dbOpenSnapshot)      On Error GoTo ERR_CGFF      ' Set up the object references.      On Error GoTo Err_CGFFOle      CGFF_PwrPntloaded = False      Set OPwrPnt = CreateObject("Powerpoint.application")      ' Activate PowerPoint. If you do not want to see PowerPoint,      ' remark the      ' next line out.      OPwrPnt.Activate      CGFF_PwrPntloaded = True      ' Use this line to Open a default saved presentation      ' Set OpwrPresent = OPwrPnt.Presentations.Open(DefFileName).Slides(1)      If CGFF_SavedPPT = "" Then         ' Use these lines to create a new Graph object on the slide.         Set OpwrPresent = OPwrPnt.Presentations.Add.Slides.Add(1, 12)         lheight = OPwrPnt.ActivePresentation.PageSetup.SlideHeight / 2         lwidth = OPwrPnt.ActivePresentation.PageSetup.SlideWidth / 2         LLeft = OPwrPnt.ActivePresentation.PageSetup.SlideHeight / 4         lTop = OPwrPnt.ActivePresentation.PageSetup.SlideHeight / 4         Set shpGraph = OpwrPresent.Shapes.AddOLEObject(Left:=LLeft, _         Top:=lTop, Width:=lwidth, Height:=lheight, _         ClassName:="MSGraph.Chart", Link:=0).OLEFormat.Object         FndGraph = True      Else         ' Use these lines if you already have a saved chart         ' on a PowerPoint         ' slide.         Set OpwrPresent = _         OPwrPnt.Presentations.Open(CGFF_SavedPPT).Slides(1)         FndGraph = False         For Shpcnt = 1 To OpwrPresent.Shapes.Count            ' Check if shape is an OLE object.            If OpwrPresent.Shapes(Shpcnt).Type = 7 Then               ' Check if OLE object is graph 9 object. The ProgID is               ' case sensitive.               If OpwrPresent.Shapes(Shpcnt).OLEFormat.ProgId = _                 "MSGraph.Chart.8" Then                  Set shpGraph = _                  OpwrPresent.Shapes(Shpcnt).OLEFormat.Object                  ' Found the graph.                  FndGraph = True               End If            End If         Next Shpcnt         ' If a graph was found.      End If      On Error GoTo ERR_CGFF      If FndGraph Then         ' Set the reference to the datasheet collection.         Set oDataSheet = shpGraph.Application.DataSheet         ' Clear the datasheet.         oDataSheet.Cells.Clear         ' These are the lines to set up you row headings You can make this         ' anything you want.         CGFF_FldCnt = 1         ' Loop through the fields collection and get the field names.         For Each CGFF_field In CGFF_Rs.Fields            oDataSheet.Cells(CGFF_FldCnt, 1).Value = _              CGFF_Rs.Fields(CGFF_FldCnt - 1).Name            CGFF_FldCnt = CGFF_FldCnt + 1         Next CGFF_field         lRowCnt = 1         ' Loop through the recordset.         Do While Not CGFF_Rs.EOF            CGFF_FldCnt = 1            ' Put the values for the fields in the datasheet.            For Each CGFF_field In CGFF_Rs.Fields               oDataSheet.Cells(CGFF_FldCnt, lRowCnt + 1).Value = _                 CGFF_Rs.Fields(CGFF_FldCnt - 1).Value               CGFF_FldCnt = CGFF_FldCnt + 1            Next CGFF_field            lRowCnt = lRowCnt + 1            CGFF_Rs.MoveNext         Loop         ' Update the graph.         shpGraph.Application.Update         DoEvents         CGFF_Rs.Close         CGFF_DB.Close         ' Release the references and save the slide.         OPwrPnt.ActivePresentation.SaveAs (CGFF_PPTFileName)         DoEvents         OPwrPnt.Quit         CreateGraphFromFile = True         GoTo Exit_CGFF      Else   ' No graphs were found display an error.         MsgBox "No graph objects were found on the Activepresentation", _            vbOKOnly, "No Graphs!!!"         OPwrPnt.Quit         CreateGraphFromFile = False         GoTo Exit_CGFF      End If   Else      ' No table was found.      MsgBox "There is not a recordset named " & CGFF_Tablename & _        "In this database", vbOKOnly, "No Table!!!"      CreateGraphFromFile = False      Exit Function   End IfErr_CGFFOle:   ' OLE error section when trying to communicate with PowerPoint.   MsgBox "There was a problem Communicating with PowerPoint", vbOKOnly, _     "No data file!!!"   MsgBox Err & " " & Err.Description, vbOKOnly, "Data file problem!!!"     CreateGraphFromFile = False   If CGFF_PwrPntloaded Then      OPwrPnt.Quit   End If   GoTo Exit_CGFFERR_CGFF:   ' General error section.   MsgBox Err & " " & Err.Description, vbOKOnly, _     "An Error has occurred with this application"   CreateGraphFromFile = FalseExit_CGFF:   Set oDataSheet = Nothing   Set OPwrPnt = Nothing   Set OpwrPresent = Nothing   Set shpGraph = NothingEnd Function'********************************************************' FUNCTION: IsTableQuery()'' PURPOSE: Determine if a table or query exists.'' ARGUMENTS:'   DbName: The name of the database. If the database name'           is "" the current database is used.'    TName: The name of a table or query.'' RETURNS: True (it exists) or False (it does not exist).''********************************************************Function IsTableQuery(DbName As String, TName As String) As Integer   Dim Db As Database, Found As Integer, Test As String   Const NAME_NOT_IN_COLLECTION = 3265   ' Assume the table or query does not exist.   Found = False   ' Trap for any errors.   On Error Resume Next   ' If the database name is empty...   If Trim$(DbName) = "" Then      '...then set Db to the current Db.      Set Db = CurrentDb()   Else      'Otherwise, set Db to the specified open database.      Set Db = DBEngine.Workspaces(0).OpenDatabase(DbName)      'See if an error occurred.      If Err Then         MsgBox "Could not find database to open: " & DbName         IsTableQuery = False         Exit Function      End If   End If   ' See if the name is in the Tables collection.   Test = Db.TableDefs(TName).Name   If Err <> NAME_NOT_IN_COLLECTION Then Found = True   ' Reset the error variable.   Err = 0   ' See if the name is in the Queries collection.   Test = Db.QueryDefs(TName$).Name   If Err <> NAME_NOT_IN_COLLECTION Then Found = True   Db.Close   IsTableQuery = FoundEnd Function					
  4. To test this function, type the following line in the Immediate window, and then press ENTER:
    ?CreateGraphFromFile("C:\MyPPT.ppt", "Category Sales for 1997", "")						
    Note that a Microsoft PowerPoint Presentation file, called MyPPT.ppt,is created with a Bar chart. The CategoryName field is the column value heading and the CategorySales field contains the data for the chart.
REFERENCES
For more information about getting help with Visual Basic for Applications, please see the following article in the MicrosoftKnowledge Base:
226118 OFF2000: Programming Resources for Visual Basic for Applications
kbmacro vba OLE 9.0
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Article ID: 200551 - Last Review: 10/11/2006 19:08:00 - Revision: 2.3

  • Microsoft Access 2000 Standard Edition
  • Microsoft PowerPoint 2000 Standard Edition
  • kbinfo kbinterop kbprogramming KB200551
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