Added some missing JUCE_API modifiers.

modules/juce_graphics/images/juce_Image.h

@@ -307,7 +307,7 @@ public:
         The actual format of the pixel data depends on the image's format - see Image::getFormat(),
         and the PixelRGB, PixelARGB and PixelAlpha classes for more info.
     */
-    class BitmapData
+    class JUCE_API  BitmapData
     {
     public:
         enum ReadWriteMode

modules/juce_gui_basics/widgets/juce_TextEditor.h

@@ -532,7 +532,7 @@ public:
     /** Base class for input filters that can be applied to a TextEditor to restrict
         the text that can be entered.
     */
-    class InputFilter
+    class JUCE_API  InputFilter
     {
     public:
         InputFilter() {}

modules/juce_gui_extra/code_editor/juce_CodeEditorComponent.h

@@ -206,7 +206,7 @@ public:
     const Font& getFont() const noexcept                { return font; }
 
     //==============================================================================
-    struct ColourScheme
+    struct JUCE_API  ColourScheme
     {
         struct TokenType
         {