Question

import com.smartgwt.client.widgets.layout.HLayout;
import com.smartgwt.client.widgets.tree.TreeGrid;

HLayout layout = new HLayout();
TreeGrid treeGrid = new TreeGrid();

layout.setMembersMargin(0);
layout.setBorder("0 none");
layout.setPaddingAsLayoutMargin(false);
layout.setLayoutMargin(0);
layout.setCanDragResize(false);
for (Canvas canvas : layout.getMembers()) {
  canvas.setMargin(0);
  canvas.setPadding(0);
  canvas.setBorder("0 none");
  canvas.setWidth("100%");
  canvas.setHeight("100%");
}
treeGrid.setMargin(0);
treeGrid.setBorder("0 none");

I have tried all these methods and border are still around the treeGrid which is in layout.
How to delete or tell SmartGWT to not generate these grey borders we can see between blue and green borders ?

Or there is a component without these borders ?

Answer 1

It is not TreeGrid fault, proof : http://www.smartclient.com/smartgwt/showcase/#tree_databinding_ondemand

Neither window fault, proof : http://www.smartclient.com/smartgwt/showcase/#layout_windows_footer

I think, your border is being explicitly set somewhere.

Plus, you should take a look at the Edge property. Check for calls of setEdgeSize(int) or try to set edge size explicitly to 0.