hDC of DynamicDisplay always 0

Question

When I try to access the hDC of my dynamic layer the result is always 0. Is there a way to get a non zero hDC from a layer that inherits BaseDynamicLayer?

public class BalloonCalloutLayer : BaseDynamicLayer
{

public override void DrawDynamicLayer(esriDynamicDrawPhase DynamicDrawPhase, IDisplay display, IDynamicDisplay dynamicDisplay)
{

int hdc = display.hDC; //This is always 0
}

}