Adding "MouseWheelTicks" to the "fgState" structure as a first step towards supportin...

[freeglut] / src / freeglut_menu.c

diff --git a/src/freeglut_menu.c b/src/freeglut_menu.c
index ec2ff45..ea5837e 100644 (file)
--- a/src/freeglut_menu.c
+++ b/src/freeglut_menu.c
@@ -25,6 +25,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#define FREEGLUT_BUILDING_LIB
 #include <GL/freeglut.h>
 #include "freeglut_internal.h"
 
@@ -263,9 +264,13 @@ static GLboolean fghCheckMenuStatus( SFG_Menu* menu )
                     menuEntry->SubMenu->X = menu->X - menuEntry->SubMenu->Width;
 
                 if( menuEntry->SubMenu->Y + menuEntry->SubMenu->Height > max_y )
+                {
                     menuEntry->SubMenu->Y -= ( menuEntry->SubMenu->Height -
                                                FREEGLUT_MENU_HEIGHT -
                                                2 * FREEGLUT_MENU_BORDER );
+                    if( menuEntry->SubMenu->Y < 0 )
+                        menuEntry->SubMenu->Y = 0;
+                }
 
                 fgSetWindow( menuEntry->SubMenu->Window );
                 glutPositionWindow( menuEntry->SubMenu->X,
@@ -552,7 +557,11 @@ static void fghActivateMenu( SFG_Window* window, int button )
         menu->X -=menu->Width;
 
     if( menu->Y + menu->Height > max_y )
+    {
         menu->Y -=menu->Height;
+        if( menu->Y < 0 )
+            menu->Y = 0;
+    }
 
     menu->Window->State.MouseX =
         window->State.MouseX + glutGet( GLUT_WINDOW_X ) - menu->X;
@@ -770,6 +779,14 @@ int FGAPIENTRY glutCreateMenu( void(* callback)( int ) )
     return fgCreateMenu( callback )->ID;
 }
 
+#if TARGET_HOST_MS_WINDOWS
+int FGAPIENTRY __glutCreateMenuWithExit( void(* callback)( int ), void (__cdecl *exit_function)(int) )
+{
+  __glutExitFunc = exit_function;
+  return glutCreateMenu( callback );
+}
+#endif
+
 /*
  * Destroys a menu object, removing all references to it
  */