src/juce_appframework/gui/components/controls/juce_ComboBox.cpp

@@ -51,12 +51,6 @@ ComboBox::ComboBox (const String& name)
       label (0)
 {
     noChoicesMessage = TRANS("(no choices)");
-
-    addAndMakeVisible (label = new Label (String::empty, String::empty));
-    label->addListener (this);
-    label->addMouseListener (this, false);
-
-    setEditableText (false);
     setRepaintsOnMouseActivity (true);
 
     lookAndFeelChanged();
@@ -453,13 +447,33 @@ void ComboBox::lookAndFeelChanged()
 {
     repaint();
 
-    label->setColour (Label::backgroundColourId, Colours::transparentBlack);
-    label->setColour (Label::textColourId, findColour (ComboBox::textColourId));
+    Label* const newLabel = getLookAndFeel().createComboBoxTextBox (*this);
 
-    label->setColour (TextEditor::textColourId, findColour (ComboBox::textColourId));
-    label->setColour (TextEditor::backgroundColourId, Colours::transparentBlack);
-    label->setColour (TextEditor::highlightColourId, findColour (TextEditor::highlightColourId));
-    label->setColour (TextEditor::outlineColourId, Colours::transparentBlack);
+    if (label != 0)
+    {
+        newLabel->setEditable (label->isEditable());
+        newLabel->setJustificationType (label->getJustificationType());
+        newLabel->setTooltip (label->getTooltip());
+        newLabel->setText (label->getText(), false);
+    }
+
+    delete label;
+    label = newLabel;
+
+    addAndMakeVisible (newLabel);
+
+    newLabel->addListener (this);
+    newLabel->addMouseListener (this, false);
+
+    newLabel->setColour (Label::backgroundColourId, Colours::transparentBlack);
+    newLabel->setColour (Label::textColourId, findColour (ComboBox::textColourId));
+
+    newLabel->setColour (TextEditor::textColourId, findColour (ComboBox::textColourId));
+    newLabel->setColour (TextEditor::backgroundColourId, Colours::transparentBlack);
+    newLabel->setColour (TextEditor::highlightColourId, findColour (TextEditor::highlightColourId));
+    newLabel->setColour (TextEditor::outlineColourId, Colours::transparentBlack);
+
+    resized();
 }
 
 void ComboBox::colourChanged()

src/juce_appframework/gui/components/juce_Component.cpp

@@ -875,6 +875,11 @@ void Component::setBounds (int x, int y, int w, int h)
     const bool wasResized  = (getWidth() != w || getHeight() != h);
     const bool wasMoved    = (getX() != x || getY() != y);
 
+#ifdef JUCE_DEBUG
+    // It's a very bad idea to try to resize a component during its paint() method!
+    jassert (! (flags.isInsidePaintCall && wasResized));
+#endif
+
     if (wasMoved || wasResized)
     {
         if (flags.visibleFlag)
@@ -1680,6 +1685,10 @@ void Component::paintEntireComponent (Graphics& originalContext)
 {
     jassert (! originalContext.isClipEmpty());
 
+#ifdef JUCE_DEBUG
+    flags.isInsidePaintCall = true;
+#endif
+
     Graphics* g = &originalContext;
     Image* effectImage = 0;
 
@@ -1775,6 +1784,10 @@ void Component::paintEntireComponent (Graphics& originalContext)
         effect_->applyEffect (*effectImage, originalContext);
         delete effectImage;
     }
+
+#ifdef JUCE_DEBUG
+    flags.isInsidePaintCall = false;
+#endif
 }
 
 //==============================================================================

src/juce_appframework/gui/components/juce_Component.h

@@ -2038,6 +2038,9 @@ private:
         bool currentlyModalFlag         : 1;
         bool isDisabledFlag             : 1;
         bool childCompFocusedFlag       : 1;
+#ifdef JUCE_DEBUG
+        bool isInsidePaintCall          : 1;
+#endif
     };
 
     union

src/juce_appframework/gui/components/lookandfeel/juce_LookAndFeel.cpp

@@ -1121,6 +1121,11 @@ const Font LookAndFeel::getComboBoxFont (ComboBox& box)
     return f;
 }
 
+Label* LookAndFeel::createComboBoxTextBox (ComboBox& box)
+{
+    return new Label (String::empty, String::empty);
+}
+
 //==============================================================================
 void LookAndFeel::drawLinearSlider (Graphics& g,
                                     int x, int y,

src/juce_appframework/gui/components/lookandfeel/juce_LookAndFeel.h

@@ -326,6 +326,8 @@ public:
 
     virtual const Font getComboBoxFont (ComboBox& box);
 
+    virtual Label* createComboBoxTextBox (ComboBox& box);
+
     //==============================================================================
     virtual void drawLinearSlider (Graphics& g,
                                    int x, int y,