Added a way to store a Font descriptor as a string. Tweaked sample-rate initialisation in the AU hosting wrapper. Gave default constructors to a few components.

src/gui/components/buttons/juce_TextButton.h

@@ -49,7 +49,7 @@ public:
 
         @see Button
     */
-    TextButton (const String& buttonName,
+    TextButton (const String& buttonName = String::empty,
                 const String& toolTip = String::empty);
 
     /** Destructor. */

src/gui/components/buttons/juce_ToggleButton.h

@@ -48,7 +48,7 @@ public:
                             initially set to this string, but these can be changed later
                             using the setName() and setButtonText() methods)
     */
-    ToggleButton (const String& buttonText);
+    explicit ToggleButton (const String& buttonText = String::empty);
 
     /** Destructor. */
     ~ToggleButton();

src/gui/components/controls/juce_ComboBox.h

@@ -84,7 +84,7 @@ public:
 
         @param componentName    the name to set for the component (see Component::setName())
     */
-    explicit ComboBox (const String& componentName);
+    explicit ComboBox (const String& componentName = String::empty);
 
     /** Destructor. */
     ~ComboBox();

src/gui/components/controls/juce_Label.h

@@ -71,8 +71,8 @@ public:
         @param componentName    the name to give the component
         @param labelText        the text to show in the label
     */
-    Label (const String& componentName,
-           const String& labelText);
+    Label (const String& componentName = String::empty,
+           const String& labelText = String::empty);
 
     /** Destructor. */
     ~Label();

src/gui/components/controls/juce_Slider.h

@@ -68,7 +68,7 @@ public:
         When created, you'll need to set up the slider's style and range with setSliderStyle(),
         setRange(), etc.
     */
-    explicit Slider (const String& componentName);
+    explicit Slider (const String& componentName = String::empty);
 
     /** Destructor. */
     ~Slider();

src/gui/components/layout/juce_GroupComponent.h

@@ -44,8 +44,8 @@ public:
         @param componentName    the name to give the component
         @param labelText        the text to show at the top of the outline
     */
-    GroupComponent (const String& componentName,
-                    const String& labelText);
+    GroupComponent (const String& componentName = String::empty,
+                    const String& labelText = String::empty);
 
     /** Destructor. */
     ~GroupComponent();