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bool   sgCScene::IsRedoStackEmpty() const

 

 

Description:

Checks whether the Redo history is empty.

 

Arguments:

No arguments.

 

Returned value:

Returns false if there are any commands in the Redo history and true if the history is empty.

 

Example:

 

sgLine*      line1 = sgCreateLine(0.0, 0.0, 0.0, 2.0, 3.0, 5.0);

sgLine*      line2 = line1->Clone();

sgGetScene()->StartUndoGroup();

sgGetScene()->AttachObject(line1);

sgGetScene()->AttachObject(line2);

sgGetScene()->EndUndoGroup();

asset(sgGetScene()->IsUndoStackEmpty()==false);

asset(sgGetScene()->IsRedoStackEmpty()==true);

sgGetScene()->Undo();

asset(sgGetScene()->IsUndoStackEmpty()==true);

asset(sgGetScene()->IsRedoStackEmpty()==false);

 

 

See also:

GetScene StartUndoGroup   IsUndoStackEmpty IsRedoStackEmpty Undo Redo