c++ - How do you handle case sensitivity in OpenSceneGraph keyboard input events? -

(please forgive shorthand memory) have code similar to:

bool myclass::handle(event ea){   switch (ea.geteventtype()){     case(osgga::keydown):       switch (ea.getkey() )       {         case (osgga::key_lshift):            down = true;            break;         case (osgga::key_w):            forward = true;            break;       }       return false;      case(osgga::keyup){       switch (ea.getkey() )       {         case (osgga::key_lshift):            down = false;            break;         case (osgga::key_w):            forward = false;            break;       }       return false;             } 

i print ea.getkey() , when press 'w', expected behavior of moving forward. however, if press 'shift' next , let go of 'w', debug: "keyup: w". note it's capitalized, , continue move forward until lowercase 'w' pressed , released.

am expected use basic c++ functions convert lowercase? i'm trying use standard wasd movement space/l-shift move , down around environment.

when press key, osg creates event corresponding key code, different letter or corresponding capitalized one.
osgga::key_w it's enum value corresponding lower case 'w' (119 ascii code), while 'w' has code 87.

so if want either lower or upper case keypress, write like:

if (ea.geteventtype() == osgga::guieventadapter::keydown) {      if (ea.getkey() == osgga::guieventadapter::key_w || ea.getkey() == 'w')      { /*code when either w or w pressed*/ } }