gtk-cell-renderer-text-set-fixed-height-from-font (renderer number-of-rows)

renderer -- a gtk-cell-renderer-text object
number-of-rows -- an integer with the number of rows of text each cell renderer is allocated, or -1

Sets the height of a renderer to explicitly be determined by the font and y-pad properties set on it. Further changes in these properties do not affect the height, so they must be accompanied by a subsequent call to this function. Using this function is unflexible, and should really only be used if calculating the size of a cell is too slow, i.e., a massive number of cells displayed. If number-of-rows is -1, then the fixed height is unset, and the height is determined by the properties again.