grid.SlickGrid gd = prepare();
gd.init();
gd.onHeaderCellRendered.subscribe((grid.EventData e, Map parm) {
if ((new math.Random()).nextInt(10) > 5) {
(parm['node'] as DivElement).appendHtml('');
} else {
(parm['node'] as DivElement).appendHtml('');
}
print(parm);
});
columns.forEach((grid.Column _) {
_.minWidth = 60;
_.maxWidth = 200;
});
gd.setColumns(columns);
gd.invalidate();
gd.render();
}