[master] debbba1 - Improve docs of Fl_Copy_Surface and use of OpenGL 3.

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[master] debbba1 - Improve docs of Fl_Copy_Surface and use of OpenGL 3. "ManoloFLTK" 06:17 Sep 21 top right image
 
commit debbba19ecf88725d3a467e55b519fa0ec8a42c0
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Wed Sep 21 15:15:55 2022 +0200
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Wed Sep 21 15:15:55 2022 +0200

    Improve docs of Fl_Copy_Surface and use of OpenGL 3.

 FL/Fl_Copy_Surface.H         | 2 +-
 documentation/src/opengl.dox | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git FL/Fl_Copy_Surface.H FL/Fl_Copy_Surface.H
index cf62e1f..9b195e9 100644
--- FL/Fl_Copy_Surface.H
+++ FL/Fl_Copy_Surface.H
@@ -44,7 +44,7 @@
  \li Mac OS: The graphical data are copied to the clipboard (a.k.a. pasteboard) in two 'flavors':
  1) in vectorial form as PDF data; 2) in bitmap form as a TIFF image.
  Applications to which the clipboard content is pasted can use the flavor that suits them best.
- \li X11: the graphical data are copied to the clipboard as an image in BMP format.
+ \li X11 and Wayland: the graphical data are copied to the clipboard as an image in BMP format.
 */
 class FL_EXPORT Fl_Copy_Surface : public Fl_Widget_Surface {
 private:
diff --git documentation/src/opengl.dox documentation/src/opengl.dox
index f826323..d1a36be 100644
--- documentation/src/opengl.dox
+++ documentation/src/opengl.dox
@@ -628,7 +628,7 @@ Testing whether the glewInit() call is successful is to be done as follows:
   GLenum err = glewInit(); // defines pters to functions of OpenGL V 1.2 and above
 #  ifdef FLTK_USE_WAYLAND
       // glewInit returns GLEW_ERROR_NO_GLX_DISPLAY with Wayland
-      if (err == GLEW_ERROR_NO_GLX_DISPLAY) err = GLEW_OK;
+      if (fl_wl_display() && err == GLEW_ERROR_NO_GLX_DISPLAY) err = GLEW_OK;
 #  endif
   if (err != GLEW_OK) Fl::warning("glewInit() failed returning %u", err);
 #endif // ! __APPLE__
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