src/glut/glx/glut_modifier.c

   1
   2 /* Copyright (c) Mark J. Kilgard, 1994. */
   3
   4 /* This program is freely distributable without licensing fees
   5    and is provided without guarantee or warrantee expressed or
   6    implied. This program is -not- in the public domain. */
   7
   8 #include "glutint.h"
   9
  10 /* CENTRY */
  11 int GLUTAPIENTRY
  12 glutGetModifiers(void)
  13 {
  14   int modifiers;
  15
  16   if(__glutModifierMask == (unsigned int) ~0) {
  17     __glutWarning(
  18       "glutCurrentModifiers: do not call outside core input callback.");
  19     return 0;
  20   }
  21   modifiers = 0;
  22   if(__glutModifierMask & (ShiftMask|LockMask))
  23     modifiers |= GLUT_ACTIVE_SHIFT;
  24   if(__glutModifierMask & ControlMask)
  25     modifiers |= GLUT_ACTIVE_CTRL;
  26   if(__glutModifierMask & Mod1Mask)
  27     modifiers |= GLUT_ACTIVE_ALT;
  28   return modifiers;
  29 }
  30
  31 /* ENDCENTRY */