swt tips

1 Common styles of Button components

SWT.PUSH button

SWT.CHECK multi-select button

SWT.RADIO radio button

SWT.ARROW arrow buttons

SWT.NONE default button

SWT.CENTER text center with SWT.NONE

SWT.LEFT left-aligned

SWT.RIGHT right-aligned

SWT.BORDER Recessed Button

SWT.FLAT flat button

2 When the drop-down box is read-only, set the background to white combo.setBackground(Display.getCurrent().getSystemColor(SWT.TRANSPARENCY_ALPHA));

3 TreeViewer sorting

treeViewer.setSorter(new SEViewSorter());//Tree set sorting rules

   class SEViewSorter extends ViewerSorter{
        public SEViewSorter(){

        }
        public int compare(Viewer viewer, Object e1, Object e2){//The return value is int, and there are generally three return types -1, 0 and 1, where -1 means reverse order ,0 means no entry and exit operations, 1 means positive sequence
           if(e1!=null&&e2!=null){//Sort by integer
               NodeModel nodeModel1=(NodeModel)e1;
               NodeModel nodeModel2=(NodeModel)e2;
               int id1=Integer.parseInt( nodeModel1.getOrder_index());
               int id2=Integer.parseInt(nodeModel2.getOrder_index());
               if(id1<id2){
                   return -1;
               }else if(id1>id2){
                   return 1;
               }
               return 0;
           }
           return super.compare(viewer,e1,e2);
        }
    }

4 Views specify location in advance

IFolderLayout folder =layout.createFolder("main", IPageLayout.RIGHT,0.7F,editorArea);
        folder.addPlaceholder(DbView.ID+ ":*");
        folder.addPlaceholder(ResDbView.ID+":*");
        folder.addPlaceholder(SqlView.ID+":*");

Guess you like