How to display system icon for a file in SWT?

Question

I want to display a file tree similarly to java2s.com \'Create a lazy file tree\', but include the actual system icons - especially for folders. SWT does not seem to offer t

Answer 1

I haven't looked at the code in detail, but I notice you are using TYPE_INT_RGB instead of TYPE_INT_ARGB (which includes alpha/transparency support).

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Looking at Snippet32 on the Eclipse site, I can see that you can usually pick up icons using the Program class. Using the extension ".Folder" doesn't seem to return an instance, even though it is a member of getExtensions().

This code can get a folder icon:

Display display = new Display();
Shell shell = new Shell(display);
Label label = new Label(shell, SWT.NONE);
label.setText("Can't find icon");
Image image = null;
for (Program p : Program.getPrograms()) {
  if ("Folder".equals(p.getName())) {
    ImageData data = p.getImageData();
    if (data != null) {
      image = new Image(display, data);
      label.setImage(image);
    }
    break;
  }
}
label.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
  if (!display.readAndDispatch())
    display.sleep();
}
if (image != null)
  image.dispose();
display.dispose();

That code needs refined, I think, but should be a pointer in the right direction. I only tested on English-language Windows XP.