+ /* Checking for CTRL, ALT, and SHIFT key positions: Key Down! */
+ if ( !lControl && GetAsyncKeyState ( VK_LCONTROL ) )
+ {
+ INVOKE_WCB ( *window, Special,
+ ( GLUT_KEY_CTRL_L, window->State.MouseX, window->State.MouseY )
+ );
+
+ lControl = 1;
+ }
+
+ if ( !rControl && GetAsyncKeyState ( VK_RCONTROL ) )
+ {
+ INVOKE_WCB ( *window, Special,
+ ( GLUT_KEY_CTRL_R, window->State.MouseX, window->State.MouseY )
+ );
+
+ rControl = 1;
+ }
+
+ if ( !lShift && GetAsyncKeyState ( VK_LSHIFT ) )
+ {
+ INVOKE_WCB ( *window, Special,
+ ( GLUT_KEY_SHIFT_L, window->State.MouseX, window->State.MouseY )
+ );
+
+ lShift = 1;
+ }
+
+ if ( !rShift && GetAsyncKeyState ( VK_RSHIFT ) )
+ {
+ INVOKE_WCB ( *window, Special,
+ ( GLUT_KEY_SHIFT_R, window->State.MouseX, window->State.MouseY )
+ );
+
+ rShift = 1;
+ }
+
+ if ( !lAlt && GetAsyncKeyState ( VK_LMENU ) )
+ {
+ INVOKE_WCB ( *window, Special,
+ ( GLUT_KEY_ALT_L, window->State.MouseX, window->State.MouseY )
+ );
+
+ lAlt = 1;
+ }
+
+ if ( !rAlt && GetAsyncKeyState ( VK_RMENU ) )
+ {
+ INVOKE_WCB ( *window, Special,
+ ( GLUT_KEY_ALT_R, window->State.MouseX, window->State.MouseY )
+ );
+
+ rAlt = 1;
+ }
+
+ /* Checking for CTRL, ALT, and SHIFT key positions: Key Up! */
+ if ( lControl && !GetAsyncKeyState ( VK_LCONTROL ) )
+ {
+ INVOKE_WCB ( *window, SpecialUp,
+ ( GLUT_KEY_CTRL_L, window->State.MouseX, window->State.MouseY )
+ );
+
+ lControl = 0;
+ }
+
+ if ( rControl && !GetAsyncKeyState ( VK_RCONTROL ) )
+ {
+ INVOKE_WCB ( *window, SpecialUp,
+ ( GLUT_KEY_CTRL_R, window->State.MouseX, window->State.MouseY )
+ );
+
+ rControl = 0;
+ }
+
+ if ( lShift && !GetAsyncKeyState ( VK_LSHIFT ) )
+ {
+ INVOKE_WCB ( *window, SpecialUp,
+ ( GLUT_KEY_SHIFT_L, window->State.MouseX, window->State.MouseY )
+ );
+
+ lShift = 0;
+ }
+
+ if ( rShift && !GetAsyncKeyState ( VK_RSHIFT ) )
+ {
+ INVOKE_WCB ( *window, SpecialUp,
+ ( GLUT_KEY_SHIFT_R, window->State.MouseX, window->State.MouseY )
+ );
+
+ rShift = 0;
+ }
+
+ if ( lAlt && !GetAsyncKeyState ( VK_LMENU ) )
+ {
+ INVOKE_WCB ( *window, SpecialUp,
+ ( GLUT_KEY_ALT_L, window->State.MouseX, window->State.MouseY )
+ );
+
+ lAlt = 0;
+ }
+
+ if ( rAlt && !GetAsyncKeyState ( VK_RMENU ) )
+ {
+ INVOKE_WCB ( *window, SpecialUp,
+ ( GLUT_KEY_ALT_R, window->State.MouseX, window->State.MouseY )
+ );
+
+ rAlt = 0;
+ }