swt

I have a TreeViewer where some nodes represent folders, so I wanted to show the icon of an open folder when the node is expanded and a closed folder when it is collapsed. Sounds easy, I just need to add a tree listener (the code is in Scala, but Java equivalent should be easy to imagine): val tree = new TreeViewer(contents) tree.addTreeListener(folderIconFixingListener) private def folderIconFixingListener = new ITreeViewerListener { def treeCollapsed(event: TreeExpansionEvent) { tree.update(event.getElement, null) } def treeExpanded(event: TreeExpansionEvent) { tree.update(event.getElement,

I am trying to create an arraylist from the data in my table. I need to get the values from the visible columns, but I also need to get values from columns that are not visible in the table. Using SWT with a Table Viewer, I have no idea on how to not display columns in my table. I also have no idea on how to pull the data from the table by specifying column names. I have always used Swing, so I have always used a Table Model Class. In swing it is pretty simple to create the columns, hide them and get data from them. This is how I have done it in previous Swing projects. In my table model class

i have composite object Composite composite = new Composite(shell, SWT.NONE); composite.setBounds(new Rectangle(10,10,100,100); How do i make this composite to have transparent background? I will need to have widgets(non transparent) placed in this composite... That not possible to create a Composite with transparent background. You can use a Shell with a transparent background (see example ), and put widgets inside it. 来源： https://stackoverflow.com/questions/9542524/java-swt-transparent-composite-background

I'm new in Java/SWT. I'm experiencing some troubles using a SWT label . When I update the text on the label, its size is not correctly updated (the label is cut, respecting the original size). However, if I perform a very small resize in my dialog, the size is updated correctly. Basically, I create the label with a default text and then, when I load data I update the label with the real text, that is bigger than the original one. I tried calling label.update() and label.redraw() without luck. Try to call parent.layout() , where parent is the Composite which contains your label. Also see

I have the following problem: I'm preparing an editor in Eclipse and one of the tab contains TreeViewer to show items in the tree. Each item has a name and a value, which is editable. The problem I need to indicate to user that value is incorrect (e.g. exceeds a given range). My idea is to decorate incorrect cells with a warning or error icon which will be shown also after editing is complete. Does anybody have an idea how to decorate items in the tree? I was experimenting with ControlDecoration class but without success. Thanks in advance, Marcin PS. I'm limited to Eclipse 3.4 There are two

I have an Eclipse RCP / SWT application with a Menu of Check Box Menu Items. I would like to be able to check/uncheck multiple items before clicking elsewhere to close the menu. However, the default SWT behavior is to close the menu after a single click. I have implemented the following very hacked solution which works, but is certainly not elegant and probably won't work properly on all platforms or under all circumstances. So I'm very interested in a simpler technique if one exists. The following code should compile and run inside eclipse right out of the box (apologies for the length, its