GOUndoBinaryFunc ()

void
(*GOUndoBinaryFunc) (gpointer a,
                     gpointer b,
                     gpointer data);

GOUndoUnaryFunc ()

void
(*GOUndoUnaryFunc) (gpointer a,
                    gpointer data);

go_undo_binary_new ()

GOUndo *
go_undo_binary_new (gpointer a,
                    gpointer b,
                    GOUndoBinaryFunc undo,
                    GFreeFunc fa,
                    GFreeFunc fb);

This function creates a new undo object for undo operations of two arguments. (In addition, an undo-time argument is added for context.)

go_undo_combine ()

GOUndo *
go_undo_combine (GOUndo *a,
                 GOUndo *b);

This function takes ownership of the argument references and gives ownership of the result to the caller. Either argument may be NULL in which case the other is returned.

go_undo_group_add ()

void
go_undo_group_add (GOUndoGroup *g,
                   GOUndo *u);

This function adds u to g .

go_undo_group_new ()

GOUndoGroup *
go_undo_group_new (void);

This function creates a new undo group for compounding undo objects.

go_undo_unary_new ()

GOUndo *
go_undo_unary_new (gpointer a,
                   GOUndoUnaryFunc undo,
                   GFreeFunc fa);

This function creates a new undo object for undo operations of one argument. (In addition, an undo-time argument is added for context.)

go_undo_undo ()

void
go_undo_undo (GOUndo *u);

Execute the stored undo operation.

go_undo_undo_with_data ()

void
go_undo_undo_with_data (GOUndo *u,
                        gpointer data);

Execute the stored undo operation. data is supplied to the undo operation as an extra argument. It is meant not to affect the undo operation in any way, but rather supply a context through which progress and errors can be reported.

struct GOUndo

struct GOUndo;

struct GOUndoBinary

struct GOUndoBinary;

struct GOUndoBinaryClass

struct GOUndoBinaryClass {
	GOUndoClass base;
};

struct GOUndoClass

struct GOUndoClass {
	GObjectClass base;

	void (*undo) (GOUndo *u, gpointer data);
};

struct GOUndoGroup

struct GOUndoGroup;

struct GOUndoGroupClass

struct GOUndoGroupClass {
	GOUndoClass base;
};

struct GOUndoUnary

struct GOUndoUnary;

struct GOUndoUnaryClass

struct GOUndoUnaryClass {
	GOUndoClass base;
};