The purpose of the graphical item is to make it easy for the user to add graphics to their diagrams. This item has the same properties as its base Node class. The only difference is that some of the default properties have been changed to make it easier to use this for graphics. This way you do not have to change these each time. For a description of the basic node properties please click here. To add an image you need to click on the image property and specify the bitmap file to display for this node. Once the image is associated with the node then its raw data is saved in the project files and you do not need to distribute the actual gif or bmp files with your project.