GtkCellRendererClass.getPreferredWidthForHeight

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
struct GtkCellRendererClass
extern (C)
void function(GtkCellRenderer* cell, GtkWidget* widget, int height, int* minimumWidth, int* naturalWidth) getPreferredWidthForHeight;

Meta