DoubleBuffer ensureDBuffer()
{
if (dbuffer == null) dbuffer = new DoubleBuffer();
return dbuffer;
}
protected void ClearDBuffer()
{
if (doubleBuffer != null) doubleBuffer.Dispose();
doubleBuffer = null;
}
private DoubleBuffer EnsureScrollbarButtonBuffer(int width, int height)
{
if (scrollBarButtonBuffer == null)
{
scrollBarButtonBuffer = new DoubleBuffer(false);
}
scrollBarButtonBuffer.EnsureDBuffer(width, height);
return scrollBarButtonBuffer;
}
public override void Dispose()
{
base.Dispose();
ClearDBuffer();
if (this.scrollBarButton != null)
{
scrollBarButton.Dispose();
scrollBarButton = null;
}
scrollAnimation.Dispose();
this.backgroundBrush.Dispose();
if (scrollBarButtonBuffer != null) scrollBarButtonBuffer.Dispose();
scrollBarButtonBuffer = null;
}
private void EnsureDoubleBuffer()
{
if (doubleBuffer == null) doubleBuffer = new DoubleBuffer(Width, Height + DBufferSpace);
}