boost 1.73.0: The practice of declaring the Bind placeholders (_1, _2, ...) in the global namespace is deprecated

src/Gui/Placement.cpp

@@ -22,11 +22,14 @@
 
 
 #include "PreCompiled.h"
+#ifndef _PreComp_
 #include <QSignalMapper>
 #include <QDockWidget>
 #include <QMessageBox>
 #include <QClipboard>
 #include <QMetaObject>
+#include <boost/bind/bind.hpp>
+#endif
 
 #include "Placement.h"
 #include "ui_Placement.h"
@@ -45,6 +48,7 @@
 #include <Base/UnitsApi.h>
 
 using namespace Gui::Dialog;
+namespace bp = boost::placeholders;
 
 namespace Gui { namespace Dialog {
 class find_placement
@@ -118,7 +122,7 @@ Placement::Placement(QWidget* parent, Qt::WindowFlags fl)
     connect(signalMapper, SIGNAL(mapped(int)),
             this, SLOT(onPlacementChanged(int)));
     connectAct = Application::Instance->signalActiveDocument.connect
-        (boost::bind(&Placement::slotActiveDocument, this, _1));
+        (boost::bind(&Placement::slotActiveDocument, this, bp::_1));
     App::Document* activeDoc = App::GetApplication().getActiveDocument();
     if (activeDoc) documents.insert(activeDoc->getName());