for( i = 0; glut_functions[ i ].name; i++ )
if( strcmp( glut_functions[ i ].name, procName ) == 0)
return glut_functions[ i ].address;
for( i = 0; glut_functions[ i ].name; i++ )
if( strcmp( glut_functions[ i ].name, procName ) == 0)
return glut_functions[ i ].address;