The window whose callback to set.
The new callback, or null to remove the currently set callback.
The previously set callback, or null if no callback was set or the library had not been initialized.
@callback_signature
void function_name(GLFWwindow* window, int width, int height)
For more information about the callback parameters, see the function pointer type.
Errors: Possible errors include @ref GLFW_NOT_INITIALIZED.
This function must only be called from the main thread.
@sa @ref window_fbsize
Added in version 3.0.
Ingroup: window
Sets the framebuffer resize callback for the specified window.
This function sets the framebuffer resize callback of the specified window, which is called when the framebuffer of the specified window is resized.