Remove unnecessary casts from glut demo programs

These casts are no longer useful since commit 5cd9f6fb8058f92d:
"STR #3323: glutAddMenuEntry now has a const label argument"

CHANGES.txt

@@ -1,4 +1,4 @@
-Changes in FLTK 1.4.0                            Released: Feb ?? 2024
+Changes in FLTK 1.4.0                            Released: Oct ?? 2024
 
   General Information about this Release
 
@@ -243,6 +243,7 @@ Changes in FLTK 1.4.0                            Released: Feb ?? 2024
   - Some methods of Fl_Tabs are now virtual and/or protected for easier
     subclassing without code duplication (STR #3211 and others).
     To be continued...
+  - glutAddMenuEntry() now has a *const* label argument (STR #3323)
   - Separated Fl_Input_Choice.H and Fl_Input_Choice.cxx (STR #2750, #2752).
   - Separated Fl_Spinner.H and Fl_Spinner.cxx (STR #2776).
   - New method Fl_Spinner::wrap(int) allows to set wrap mode at bounds if

test/fractals.cxx

@@ -724,28 +724,28 @@ void MenuInit(void)
   int submenu3, submenu2, submenu1;
 
   submenu1 = glutCreateMenu(setlevel);
-  glutAddMenuEntry((char *)"0", 0);  glutAddMenuEntry((char *)"1", 1);
-  glutAddMenuEntry((char *)"2", 2);  glutAddMenuEntry((char *)"3", 3);
-  glutAddMenuEntry((char *)"4", 4);  glutAddMenuEntry((char *)"5", 5);
-  glutAddMenuEntry((char *)"6", 6);  glutAddMenuEntry((char *)"7", 7);
-  glutAddMenuEntry((char *)"8", 8);
+  glutAddMenuEntry("0", 0);  glutAddMenuEntry("1", 1);
+  glutAddMenuEntry("2", 2);  glutAddMenuEntry("3", 3);
+  glutAddMenuEntry("4", 4);  glutAddMenuEntry("5", 5);
+  glutAddMenuEntry("6", 6);  glutAddMenuEntry("7", 7);
+  glutAddMenuEntry("8", 8);
 
   submenu2 = glutCreateMenu(choosefract);
-  glutAddMenuEntry((char *)"Moutain", MOUNTAIN);
-  glutAddMenuEntry((char *)"Tree", TREE);
-  glutAddMenuEntry((char *)"Island", ISLAND);
+  glutAddMenuEntry("Moutain", MOUNTAIN);
+  glutAddMenuEntry("Tree", TREE);
+  glutAddMenuEntry("Island", ISLAND);
 
   submenu3 = glutCreateMenu(agvSwitchMoveMode);
-  glutAddMenuEntry((char *)"Flying", FLYING);
-  glutAddMenuEntry((char *)"Polar", POLAR);
+  glutAddMenuEntry("Flying", FLYING);
+  glutAddMenuEntry("Polar", POLAR);
 
   glutCreateMenu(handlemenu);
   glutAddSubMenu((char *)"Level", submenu1);
   glutAddSubMenu((char *)"Fractal", submenu2);
   glutAddSubMenu((char *)"Movement", submenu3);
-  glutAddMenuEntry((char *)"New Fractal",      MENU_RAND);
-  glutAddMenuEntry((char *)"Toggle Axes", MENU_AXES);
-  glutAddMenuEntry((char *)"Quit",             MENU_QUIT);
+  glutAddMenuEntry("New Fractal",      MENU_RAND);
+  glutAddMenuEntry("Toggle Axes", MENU_AXES);
+  glutAddMenuEntry("Quit",             MENU_QUIT);
   glutAttachMenu(GLUT_RIGHT_BUTTON);
 }
 

test/glpuzzle.cxx

@@ -4,7 +4,7 @@
 // This is a GLUT demo program to demonstrate fltk's GLUT emulation.
 // Search for "fltk" to find all the changes
 //
-// Copyright 1998-2020 by Bill Spitzak and others.
+// Copyright 1998-2024 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -1485,10 +1485,10 @@ main(int argc, char **argv)
   glutMouseFunc(mouse);
   glutVisibilityFunc(visibility);
   glutCreateMenu(menu);
-  glutAddMenuEntry((char *)"Normal pos", 1);
-  glutAddMenuEntry((char *)"Solve", 2);
-  glutAddMenuEntry((char *)"Reset", 3);
-  glutAddMenuEntry((char *)"Quit", 4);
+  glutAddMenuEntry("Normal pos", 1);
+  glutAddMenuEntry("Solve", 2);
+  glutAddMenuEntry("Reset", 3);
+  glutAddMenuEntry("Quit", 4);
   glutAttachMenu(GLUT_RIGHT_BUTTON);
   glutMainLoop();
   return 0;             /* ANSI C requires main to return int. */