Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>My answer is somehow similar to the one I gave here:</p> <p><a href="https://stackoverflow.com/a/12420458/1449199">SWTChart mouse event handling</a></p> <p>The code below should give you an idea on where to start. It basically remembers the location of a <code>MouseDown</code> event. Each time the mouse is then dragged, a rectangle is drawn from the starting location to the current location. Once <code>MouseUp</code> happens, everything stops.</p> <pre><code>public class DrawExample { private static boolean drag = false; private static int startX; private static int startY; private static int endX; private static int endY; public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setText("Drawing Example"); final Canvas canvas = new Canvas(shell, SWT.NONE); canvas.setSize(150, 150); canvas.setLocation(20, 20); shell.open(); shell.setSize(200, 220); canvas.addListener(SWT.MouseDown, new Listener() { @Override public void handleEvent(Event event) { startX = event.x; startY = event.y; drag = true; } }); canvas.addListener(SWT.MouseUp, new Listener() { @Override public void handleEvent(Event event) { endX = event.x; endY = event.y; drag = false; canvas.redraw(); } }); canvas.addListener(SWT.MouseMove, new Listener() { @Override public void handleEvent(Event event) { if(drag) { endX = event.x; endY = event.y; canvas.redraw(); } } }); canvas.addListener(SWT.Paint, new Listener() { @Override public void handleEvent(Event event) { if(drag) { GC gc = event.gc; gc.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK)); gc.setAlpha(128); int minX = Math.min(startX, endX); int minY = Math.min(startY, endY); int maxX = Math.max(startX, endX); int maxY = Math.max(startY, endY); int width = maxX - minX; int height = maxY - minY; gc.fillRectangle(minX, minY, width, height); } } }); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } } </code></pre> <p>It looks like this:</p> <p><img src="https://i.stack.imgur.com/kz3XE.png" alt="enter image description here"></p>
    singulars
    1. This table or related slice is empty.
    1. POHow to draw selection box on SWT canvas?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. USBaz
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POHow to draw selection box on SWT canvas?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COGreat. This seems to work. I am going to integrate it and mark your answer as solution as soon as I am finished. Thanks again.
      singulars
      1. PO
      1. USali
    2. CO@ali You're welcome. Always glad when I can help.
      singulars
      1. PO
      1. USBaz
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload