ET++: Stepping through the redraw of a changed ImageItem

When the appearance of a VObject becomes invalid, this method is called, either by the VObject itself or by some other interested object like the Application, to notify ET++ that that a certain rectangular part of an object is invalid and must be redrawn. This method calls VObject::InvalidateRect(), using the VObjects content rectangle, to indicate that the entire contents of the VObject should be redrawn. 

void VObject::ForceRedraw()
{
	InvalidateRect(contentRect);
}

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