Delegate CellRendererClassData.GetPreferredHeightForWidthCallback
public delegate void CellRendererClassData.GetPreferredHeightForWidthCallback(IntPtr cell, IntPtr widget, int width, out int minimumHeight, out int naturalHeight)
public delegate void CellRendererClassData.GetPreferredHeightForWidthCallback(IntPtr cell, IntPtr widget, int width, out int minimumHeight, out int naturalHeight)