System.out.println("Available camera: " + cam_count);
for (int i = 0; i < cam_count; i++) {
CameraViewer new_viewer = new CameraViewer(this.pool, SWT.NULL, i);
new_viewer.registerListener(this);
new_viewer.setLayoutData(data);
this.cams.add(new_viewer);
}
scrollable.setMinSize(this.pool.computeSize(SWT.DEFAULT, SWT.DEFAULT));
}