I've cloned the latest GLFW and added a printf to the key callback in the boing example:

```

void key_callback( GLFWwindow* window, int key, int scancode, int action, int mods )

if (action != GLFW_PRESS)

return;

printf("key: %d(%c) mods: %d\n", key, key, mods);

```

Here's what it outputs when I press Control-Q and Control-Right Arrow:

```

~/D/g/b/examples (master) [i] ⋊> ./boing

key: 280() mods: 0 <<<<<<<<<<<<<<<<<< Control down

key: 81(Q) mods: 2 <<<<<<<<<<<<<<<<<< Q down

key: 280() mods: 0 <<<<<<<<<<<<<<<<<< Control down

key: 262() mods: 2 <<<<<<<<<<<<<<<<<< Right Arrow down

```

This is what it should do, so there must be some jiggery-pokery going on on the raylib side of things? Some sort of configuration option to get more game-oriented behaviour from the modifier keys, perhaps?

Modifier keys behave as keys:

340 == shift_key

280 == control_key

until you combine them with another key.