结合航空玻璃效果和SWT

作为一个宠物项目,我一直在玩将空气玻璃效果集成到我的SWT应用程序的概念。 Łukasz Milewski has an excellent blog post 解释如何做到这一点,基本上可以归结为:

final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FormLayout());
final MARGINS margins = new MARGINS();
margins.cyTopHeight = -1;

final Composite c = new Composite(shell, SWT.NORMAL);
c.setBackground(new Color(shell.getDisplay(), new RGB(0, 0, 0)));
final FormData fd = new FormData();
fd.top = new FormAttachment(0, 0);
fd.left = new FormAttachment(0, 0);
fd.right = new FormAttachment(100, 0);
fd.bottom = new FormAttachment(100, 0);
c.setLayoutData(fd);

OS.DwmExtendFrameIntoClientArea(shell.handle, margins);

shell.open();
while (!shell.isDisposed()) {
    if (!display.readAndDispatch()) {
        display.sleep();
    }
}

在您想要添加控件之前,这项工作非常出色。这将导致黑色保持透明:

A follow-up post @Override .)

如何避免控件变得透明?更妙的是:如何从透明度中获益(例如,在其上放置图像) like so ),但用一种明智的方式?