GtkTreeDragDestIface.rowDropPossible

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
struct GtkTreeDragDestIface
extern (C)
int function(GtkTreeDragDest* dragDest, GtkTreePath* destPath, GtkSelectionData* selectionData) rowDropPossible;

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