fix some warnings

libs/blockview/blockeditor.cpp

@@ -16,7 +16,7 @@ BlockEditor::BlockEditor(QWidget *parent) : QWidget(parent), ui(new Ui::BlockEdi
 	ui->setupUi(this);
 	src_title = windowTitle();
 	connect(ui->blockView->scene(), SIGNAL(selectionChanged()), this, SLOT(selectionChanged()));
-	block.setFlags(0);
+	block.setFlags(QGraphicsItem::GraphicsItemFlags());
 	ui->blockView->addItem(&block);
 	ui->blockView->viewport()->installEventFilter(this);
 	DrawTools * drawtools = new DrawTools(ui->blockView);