void ImpressionistUI::cb_paintlyMinBrushSizeSlider(Fl_Widget* o, void* v)
{
	ImpressionistUI* pUI = ((ImpressionistUI *)(o->user_data()));
	ImpressionistDoc* pDoc = pUI->getDocument();
	int val = int(((Fl_Slider *)o)->value());
	pDoc->setPaintlyMinBrush(val);
}