The size of the ActiveGantt control will vary when sending the output to different resolution printer. A 300 dpi printer will print the ActiveGantt control correctly, while a 600dpi printer generates a much smaller output.

Originally when the control was developed, the TwipsPerPixel property of the printers that were used to test the control was 4. Some printers have a TwipsPerPixel property of 2.4, so the output will normally vary. To correct this problem you can use the following formula:

ScaleFactor = Scale * (4 / Printer.TwipsPerPixelX)

The Following example demonstrates the use of the formula in Visual Basic 6.0 code:

    With ActiveGanttVBCtl1
        .InitializePrinter #9/1/2003#, #1/7/2004#
        Printer.Print
        .PrintControl Printer.hDC, 0, 0, 16000, 4780, 30, 30, 400 * (4 / Printer.TwipsPerPixelX) , 0.25
        Printer.NewPage
         .PrintControl Printer.hDC, 0, 4781, 16000, 4780, 30, 30, 400 * (4 / Printer.TwipsPerPixelX), 0.25
        Printer.EndDoc
    End With