I'm trying to add support to let the user print the diagram or export it to PDF. My first efforts aren't very successful - please see attachments.

The two nodes in the print preview are the two tiny points in the upper left corner.

My program uses MeasureUnit = pixel. I've seen here on the forum that there are lots of problems with that and printing.

So I guess my question is, what is the best and easiest way to make the program provide printing and export to PDF support? Change the program to not use MeasureUnit = pixel, and overcome the problems that entails, or get into various workarounds involving copying the diagram to a new hidden view and do printing and export to PDF from there?

Thanks.

PS. Maximum attachment size of 250 KB? Do you store them on floppy disks?

Hi Stoyan, and thanks.

In trying to get something to work I've temporarily suppressed the background image, so I only have the two (custom) nodes. If I call PrintOptions.ScaleToPage() then PrintOptions gets set to 680! What does that mean? (I'm still using Diagram.MeasureUnit = pixel.)

But PrintOptions.Scale = 680 actually works - the two nodes are printed about where I would expect them to be. See attachment.

But the texts are not printed. These are custom nodes similar to those in the IconNodes sample program. What do I need to do to get the texts printed?

And one last question - it looks like the scaling has been done based on the printing being done in landscape orientation, but the preview doesn't automatically switch to landscape orientation. Is there a way of specifying which page orientation you want?

Thanks.

Thanks for your help.

The thing that threw me about the "scale factor" of 680 was that it was so large. The printer does not have 680 times as many pixels per inch as the screen! Then I discovered that the so-called "scale factor" is actually a percentage.

You were right about Font.Unit being the problem with the text. The default unit of Point does not work, but Pixel does.

The header string is always printed immediately above the top margin at this time. The only way I can think of to add more space is by appending new lines to the header:

var nl = Environment.NewLine;
diagramView.PrintOptions.HeaderFormat = "%D , Page %P" + nl + nl; 

I hope that helps,
Stoyan