I am trying to print a report in Xojo using the PreviewPage image, because I need to open a standard printing dialog for the user to select a printer and make adjustments to the printout (choose printer, which pages to print, color vs. b/w, etc). But the "default" PreviewPage image resolution is too low for a quality report on a full letter sized page. So I tried increasing PreviewZoom and also PreviewWidth and PreviewHeight, but none of these causes the following PreviewPage function to change - it continues to output the same lower resolution image.
Why aren't PreviewZoom, PreviewWidth and PreviewHeight having any effect on PreviewPage? Or how else can I get a higher resolution image for printing? Note that PrintToLocalPrinter produces acceptable quality printouts, but I can't use a standard printing dialog with this to allow the user to choose the printer and other options.