Fixed some findParentComponentOfClass() calls.

extras/JuceDemo/Source/demos/AudioDemoPlaybackPage.cpp

@@ -118,9 +118,9 @@ public:
 
     void filesDropped (const StringArray& files, int /*x*/, int /*y*/)
     {
-        AudioDemoPlaybackPage* demoPage = findParentComponentOfClass ((AudioDemoPlaybackPage*) 0);
+        AudioDemoPlaybackPage* demoPage = findParentComponentOfClass<AudioDemoPlaybackPage>();
 
-        if (demoPage != 0)
+        if (demoPage != nullptr)
             demoPage->showFile (File (files[0]));
     }
 

extras/audio plugin host/Source/GraphEditorPanel.cpp

@@ -202,7 +202,7 @@ private:
 
     GraphEditorPanel* getGraphPanel() const noexcept
     {
-        return findParentComponentOfClass ((GraphEditorPanel*) nullptr);
+        return findParentComponentOfClass<GraphEditorPanel>();
     }
 
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (PinComponent);
@@ -450,7 +450,7 @@ private:
 
     GraphEditorPanel* getGraphPanel() const noexcept
     {
-        return findParentComponentOfClass ((GraphEditorPanel*) nullptr);
+        return findParentComponentOfClass<GraphEditorPanel>();
     }
 
     FilterComponent (const FilterComponent&);
@@ -688,7 +688,7 @@ private:
 
     GraphEditorPanel* getGraphPanel() const noexcept
     {
-        return findParentComponentOfClass ((GraphEditorPanel*) nullptr);
+        return findParentComponentOfClass<GraphEditorPanel>();
     }
 
     void getDistancesFromEnds (int x, int y, double& distanceFromStart, double& distanceFromEnd) const
@@ -730,7 +730,7 @@ void GraphEditorPanel::mouseDown (const MouseEvent& e)
     {
         PopupMenu m;
 
-        MainHostWindow* const mainWindow = findParentComponentOfClass ((MainHostWindow*) nullptr);
+        MainHostWindow* const mainWindow = findParentComponentOfClass<MainHostWindow>();
 
         if (mainWindow != nullptr)
         {

extras/the jucer/src/model/components/jucer_JucerComponentHandler.h

@@ -210,7 +210,7 @@ private:
 
         void buttonClicked()
         {
-            MainWindow* const mw = findParentComponentOfClass ((MainWindow*) 0);
+            MainWindow* const mw = findParentComponentOfClass<MainWindow>();
 
             jassert (mw != 0);
             if (mw != 0)

extras/the jucer/src/properties/jucer_PositionPropertyBase.h

@@ -342,7 +342,7 @@ public:
 
         Rectangle<int> parentArea;
 
-        if (component->findParentComponentOfClass ((ComponentLayoutEditor*) 0) != 0)
+        if (component->findParentComponentOfClass<ComponentLayoutEditor>() != 0)
         {
             parentArea.setSize (component->getParentWidth(), component->getParentHeight());
         }

extras/the jucer/src/ui/jucer_EditingPanelBase.cpp

@@ -129,7 +129,7 @@ private:
 
         void mouseDown (const MouseEvent& e)
         {
-            Viewport* viewport = findParentComponentOfClass ((Viewport*) 0);
+            Viewport* viewport = findParentComponentOfClass<Viewport>();
 
             if (viewport != 0)
             {
@@ -140,7 +140,7 @@ private:
 
         void mouseDrag (const MouseEvent& e)
         {
-            Viewport* viewport = findParentComponentOfClass ((Viewport*) 0);
+            Viewport* viewport = findParentComponentOfClass<Viewport>();
 
             if (viewport != 0)
             {

extras/the jucer/src/ui/jucer_JucerDocumentHolder.cpp

@@ -412,7 +412,7 @@ JucerDocumentHolder::~JucerDocumentHolder()
 
 bool JucerDocumentHolder::close()
 {
-    MainWindow* const mw = findParentComponentOfClass ((MainWindow*) 0);
+    MainWindow* const mw = findParentComponentOfClass<MainWindow>();
 
     if (mw != 0)
         return mw->closeDocument (this);