We try to run a simple program remotely on a new system that doesn't have a monitor attached to the cpu unit (i.e. application deployed on that remote server, application display directed to a local screen via microsoft windows remote desktop connection). The following exception occurs. On line 95 of the loadDiagram function, it is simply Diagram diagram = new Diagram();


java.awt.HeadlessException
at sun.awt.HeadlessToolkit.getScreenResolution(HeadlessToolkit.java:203)
at com.mindfusion.diagramming.Diagram.setImageDpiX(Unknown Source)
at com.mindfusion.diagramming.Diagram.<init>(Unknown Source)
at com.xxx.yyy.zzzDiagram.loadDiagram(zzzDiagram.java:95)

We'll have to find all places in the JDiagram code where that could happen and add GraphicsEnvironment.isHeadless() checks to avoid the exception. I will send you a new version of the JAR file when thats ready.

It works great. We appreciate your tremendous support.

Here is a trial version:
https://mindfusion.eu/_temp/headless.zip

If you are our licensed customer, please email us your order number or some registrations details you provided with the purchase.

Stoyan

We haven't removed any checks for headless environment, so perhaps that createCustomCursor method started throwing HeadlessException exception in more recent versions of Java. Our developer will check that for next release.

I'm not sure if that will help you though. It seems even if you create DiagramView, you can't add it to a root window since the JFrame constructor throws a HeadlessException too.

Stoyan

Then you shouldn't need a DiagramView either. You can create an image using solely the Diagram class.

I hope that helps,
Stoyan