modernize C++: use bool literals

src/Mod/PartDesign/App/FeatureExtrude.cpp

@@ -177,7 +177,7 @@ void FeatureExtrude::generatePrism(TopoDS_Shape& prism,
         // see e.g. https://forum.freecad.org/viewtopic.php?p=560785#p560785
         // It is better not to use BRepFeat_MakePrism here even if we have a support because the
         // resulting shape creates problems with Pocket
-        BRepPrimAPI_MakePrism PrismMaker(from, Ltotal * gp_Vec(direction), 0, 1); // finite prism
+        BRepPrimAPI_MakePrism PrismMaker(from, Ltotal * gp_Vec(direction), Standard_False, Standard_True); // finite prism
         if (!PrismMaker.IsDone())
             throw Base::RuntimeError("ProfileBased: Length: Could not extrude the sketch!");
         prism = PrismMaker.Shape();

src/Mod/PartDesign/App/FeatureHelix.cpp

@@ -594,7 +594,7 @@ void Helix::proposeParameters(bool force)
 
         Pitch.setValue(pitch);
         Height.setValue(pitch * 3.0);
-        HasBeenEdited.setValue(1);
+        HasBeenEdited.setValue(true);
     }
 }
 

src/Mod/PartDesign/App/FeatureHole.cpp

@@ -1260,9 +1260,9 @@ void Hole::onChanged(const App::Property* prop)
             CustomThreadClearance.setReadOnly(true);
             ThreadDepth.setReadOnly(true);
             ThreadDepthType.setReadOnly(true);
-            Threaded.setValue(0);
-            ModelThread.setValue(0);
-            UseCustomThreadClearance.setValue(0);
+            Threaded.setValue(false);
+            ModelThread.setValue(false);
+            UseCustomThreadClearance.setValue(false);
         }
         else if (type == "ISOMetricProfile") {
             ThreadSize.setEnums(ThreadSize_ISOmetric_Enums);

src/Mod/PartDesign/Gui/Utils.cpp

@@ -279,7 +279,7 @@ void fixSketchSupport (Sketcher::SketchObject* sketch)
         return; // Sketch is on a face of a solid, do nothing
 
     const App::Document* doc = sketch->getDocument();
-    PartDesign::Body *body = getBodyFor(sketch, /*messageIfNot*/ 0);
+    PartDesign::Body *body = getBodyFor(sketch, /*messageIfNot*/ false);
     if (!body) {
         throw Base::RuntimeError ("Couldn't find body for the sketch");
     }