diff options
Diffstat (limited to 'FL')
| -rw-r--r-- | FL/Fl_Image.H | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/FL/Fl_Image.H b/FL/Fl_Image.H index 203a91d3b..09d84a6de 100644 --- a/FL/Fl_Image.H +++ b/FL/Fl_Image.H @@ -30,6 +30,7 @@ class Fl_Widget; class Fl_Pixmap; struct Fl_Menu_Item; struct Fl_Label; +class Fl_RGB_Image; /** \enum Fl_RGB_Scaling @@ -186,6 +187,12 @@ public: // get RGB image scaling method static Fl_RGB_Scaling RGB_scaling(); + /** Use this method if you have an Fl_Image object and want to know whether it is derived + from class Fl_RGB_Image. + If the method returns non-NULL, then the image in question is + derived from Fl_RGB_Image, and the returned value is a pointer to this image. + */ + virtual Fl_RGB_Image *as_rgb_image() {return NULL;} }; @@ -249,6 +256,7 @@ public: \sa void Fl_RGB_Image::max_size(size_t) */ static size_t max_size() {return max_size_;} + virtual Fl_RGB_Image *as_rgb_image() {return this;} }; #endif // !Fl_Image_H |