Bug 170011

Description Paul E. Keyser 2007-01-09 15:23:35 EST

Build ID:  M20060921-0945

Steps To Reproduce:
1.Create a CTabFolder, backed by some data-model
2.Allow user to delete any tab
3.User deletes last tab; coder wishes to write message in CTablFolder area -- no way to do so


More information:
I'd like to be able to display some sort of useful help message to the user after they close (delete) all tabs in a CTabFolder (that is valid in my app, but perhaps was not intended by CTabFolder). 

I'm aware of bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=25615

I've tried to make use of Snippet 214, but it fails (or maybe I copied the code wrongly); "folder()" of course just returns the CTabFolder, and the code is called at a time when the user deletes the last tab, and the folder().getBounds() is fine, e.g. Rectangle {29, 28, 576, 237}:

            final Image old = folder().getBackgroundImage();
            if (null != old) {
                old.dispose();
            }
            final Rectangle bounds = folder().getBounds();
            final Display display = Display.getCurrent();
            final Image newImage = new Image(display, Math.max(1, bounds.width), 1);
            final GC gc = new GC(newImage);

            // temporarily just copy the Snippet 214 image; later write text:
            gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
            gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
            gc.fillGradientRectangle(bounds.x, bounds.y, bounds.width, 1, false);

            gc.dispose();
            folder().setBackgroundImage(newImage);
            folder().getParent().layout();