###########################################################
#
# sub create_ppt_presentation
#
# create and return a new blank presentation
#
# $title is title for the presentation
#
###########################################################
sub create_ppt_presentation
{
    my ($title) = @_;

    my ($PptApp, $Presentation, $Slide);

    trace("create_ppt_presentation: getting powerpoint.application object\n");
    $PptApp  = Win32::OLE-> GetActiveObject('PowerPoint.Application')
	|| Win32::OLE-> new('PowerPoint.Application', 'Quit');
    $PptApp-> {Visible} = IS_PPT_VISIBLE;
    $Presentation = $PptApp-> Presentations->Add();

    return ($PptApp, $Presentation);
}

##</code><code>##

$Slide = $Presentation-> Slides->Add({Index => $position, Layout => ppLayoutBlank});
$Slide->{Name} = "test";

$graph_shape = $Slide->Shapes->AddOleObject({
   Left => 10,
   Top => 40,
   Height => 450,
   Width => 650,
   ClassName => "MSGraph.Chart",
   Link => 0});
$graph = $graph_shape->OLEFormat->{Object}; # ms graph chart object

# i can now work with $graph

##</code><code>##

    $datasheet = $graph->Application->{DataSheet};
    $datasheet->Cells->ClearContents();
    # i can now feed the datasheet with some datas
    # ...
    
    # after the settings of the datasheet's cells, free graph and datasheet
    undef $datasheet;
    undef $graph;

##</code><code>##

   # $Presentaion is the powerpoint presentation object
   $Presentation->SaveAs("c:/test.ppt");