fix #416: reciprocal filter broken

[flightgear.git] / src / GUI / dialog.cxx

diff --git a/src/GUI/dialog.cxx b/src/GUI/dialog.cxx
index 8a4160499a489001193cae7e0f23687f80adb077..364cf5d1399d7acfa20d9232fe652d2f9c852dfc 100644 (file)
--- a/src/GUI/dialog.cxx
+++ b/src/GUI/dialog.cxx
@@ -5,6 +5,8 @@
 #endif
 
 #include <simgear/structure/SGBinding.hxx>
+#include <simgear/props/props_io.hxx>
+
 #include <Scripting/NasalSys.hxx>
 #include <Main/fg_os.hxx>
 
@@ -369,7 +371,7 @@ void fgPopup::applySize(puObject *object)
 void FGDialog::ConditionalObject::update(FGDialog* aDlg)
 {
   if (_name == "visible") {
-    bool wasVis = _pu->isVisible();
+    bool wasVis = _pu->isVisible() != 0;
     bool newVis = test();
     
     if (newVis == wasVis) {
@@ -382,7 +384,7 @@ void FGDialog::ConditionalObject::update(FGDialog* aDlg)
       _pu->hide();
     }
   } else if (_name == "enable") {
-    bool wasEnabled = _pu->isActive();
+    bool wasEnabled = _pu->isActive() != 0;
     bool newEnable = test();
     
     if (wasEnabled == newEnable) {