GtkCellAreaClass.activate

This is called when the layouting widget rendering the gtk.cell_area.CellArea activates the focus cell (see gtk.cell_area.CellArea.getFocusCell).

struct GtkCellAreaClass
extern (C)
bool function(GtkCellArea* area, GtkCellAreaContext* context, GtkWidget* widget, const(GdkRectangle)* cellArea, GtkCellRendererState flags, bool editOnly) activate;