This method activates a position in the specified block and moves it into view. The position must be in a word in the block. Otherwise, the position is not changed.
BlockIndex[in] Contains the index of the block to be activated. The index is in the ILayout::VisualBlocks collection.X[in] Contains the horizontal coordinate of a point in the block in pixels. The coordinates are relative to the document image.Y[in] Contains the vertical coordinate of a point in the block in pixels. The coordinates are relative to the document image.