Is it possible to control charts in powerpoint using combo box? - excel

Question

The below image is an example of what i am trying to do. My chart shows the capacity of Resources over month. I choose the month for which i want to view data from the dropdown list. While this is in excel, im trying to do the same in Powerpoint using the charts and AxtiveX controls. Can anyone please guide me on this?
Chart and combobox example

Answer 1

Using a standard Microsoft Forms 2.0 ComboBox control (I do not use ActiveX controls), this is pretty much what you're looking for.
Insert the ComboBox control on the slide where the chart exists. This assumes that the chart data exists in the default ListBox item on the ChartData.Workbook.Worksheets(1) worksheet (i.e., this is what happens when you insert a chart directly in PPT) if you're copying a chart from Excel, this may need revision, but the general idea is the same:
When the user selects the combobox, (ComboBox1_GotFocus queries the chart's underlying data to populate the list. If your data is structured differently, this will need to be modified.
User can make a selection in the ComboBox.
After making the selection, the ComboBox1_Change event will identify the range of data which contains the selected series, and hides the other series, so that only the selected series is visible
Here's my default chart & data which I can view by right-click/Edit Data:
Displaying the slideshow, entering the ComboBox will display the list of series names:
Then, change the selection, and see only the selected series:
Option Explicit
'This code belongs in a SLIDE module in PowerPoint
Private Sub ComboBox1_Change()
'This procedure hides/unhides chart series, based on combobox value
Dim rng As Object 'Excel.Range object
Dim c As Long
With Me.Shapes("Content Placeholder 5").Chart.ChartData '## MODIFY YOUR SHAPE NAME
.Activate
.Workbook.Parent.WindowState = -4140
For c = 2 To .Workbook.Worksheets(1).ListObjects(1).HeaderRowRange.Columns.Count
Set rng = .Workbook.Worksheets(1).ListObjects(1).HeaderRowRange.Cells(c)
rng.EntireColumn.Hidden = (rng.Value <> ComboBox1.Value)
Next
.Workbook.Close
End With
End Sub
Private Sub ComboBox1_GotFocus()
'This procedure sets the list items in the combobox whenever it gets focus
Dim lst As Variant
Dim xlApp As Object
With Me.Shapes("Content Placeholder 5").Chart.ChartData '## MODIFY YOUR SHAPE NAME
.Activate
.Workbook.Parent.WindowState = -4140
Set xlApp = .Workbook.Parent
.Workbook.Worksheets(1).Columns("B:D").Hidden = False
lst = xlApp.Transpose(xlApp.Transpose(.Workbook.Worksheets(1).Range("B1:D1").Value))
.Workbook.Close
End With
ComboBox1.List = lst
End Sub