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