DocumentPaginator, FixedPages and stubburn VisualBrush()

Hello everyone,

ok, I've banged my head for the past three days, I need help, it hurts :)

Immagine a bunch of XML files: each identifing a JPG and any number of tags described with x, y and a label. Plainly said, an image tagging setup.

Now, immagine an interface that lists these files in a ListView, when you click on an item of the list the JPG, along with its tags, nicely renders in a Canvas.

Along comes the requirement: print the Canvas content! No problem:

Size pageSize = new Size(printDialog.PrintableAreaWidth, printDialog.PrintableAreaHeight);
FixedDocument document = new FixedDocument();
document.DocumentPaginator.PageSize = pageSize;

foreach (String planimetry in Planimetries.SelectedItems) {
	FixedPage fixedPage = new FixedPage();
	fixedPage.Width = pageSize.Width;
	fixedPage.Height = pageSize.Height;

	// Add visual, measure/arrange page
	fixedPage.Children.Add(new Label() { Content = planimetry });

	DrawPlanimetry(planimetry); // Draws the planimetry and tags in thePlanimetry a Canvas
	fixedPage.Background = new VisualBrush(thePlanimetry) { Stretch = Stretch.Uniform };

	fixedPage.Measure(pageSize);
	fixedPage.Arrange(new Rect(new Point(), pageSize));
	fixedPage.UpdateLayout();

	// Add page to document
	var pageContent = new PageContent();
	((IAddChild)pageContent).AddChild(fixedPage);
	document.Pages.Add(pageContent);
}
printDialog.PrintDocument(document.DocumentPaginator, "MyPlanimetries");

The verdict: selecting a single item works like a charm, select two or more, and it prints the corresponding number of pages with the proper Label but with THE SAME background in all pages, the background is that of the last drawn JPG!

I tried this instead of setting fixedpage.Background:

Rectangle plan = new Rectangle() {
	Width = pageSize.Width - 2 * margin,
	Height = pageSize.Height - 2 * margin,
	Fill = new VisualBrush(thePlanimetry) { Stretch = Stretch.Uniform };
plan.UpdateLayout();
fixedPage.Children.Add(plan);

To no avail. I tried cloning the VisualBrush, nope.

Suggestions? And, thank-you for reading this post.

Visualize then Realize (tm)