diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Fl_Screen_Driver.cxx | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/Fl_Screen_Driver.cxx b/src/Fl_Screen_Driver.cxx index e9fd4ec73..526f37b1e 100644 --- a/src/Fl_Screen_Driver.cxx +++ b/src/Fl_Screen_Driver.cxx @@ -158,6 +158,9 @@ uchar *Fl_Screen_Driver::read_image(uchar *p, int X, int Y, int w, int h, int al Fl_RGB_Image *img; if (fl_find(fl_window) == 0) { // read from off_screen buffer img = read_win_rectangle(p, X, Y, w, h, alpha); + if (!img) { + return NULL; + } img->alloc_array = 1; } else { img = traverse_to_gl_subwindows(Fl_Window::current(), p, X, Y, w, h, alpha, NULL); |