Function glfwGetVideoMode 

pub unsafe extern "C" fn glfwGetVideoMode(
    monitor: *mut GLFWmonitor,
) -> *const GLFWvidmode

@brief Returns the current mode of the specified monitor.

This function returns the current video mode of the specified monitor. If you have created a full screen window for that monitor, the return value will depend on whether that window is iconified.

@param[in] monitor The monitor to query. @return The current mode of the monitor, or NULL if an [error](@ref error_handling) occurred.

@errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref GLFW_PLATFORM_ERROR.

@pointer_lifetime The returned array is allocated and freed by GLFW. You should not free it yourself. It is valid until the specified monitor is disconnected or the library is terminated.

@thread_safety This function must only be called from the main thread.

@sa @ref monitor_modes @sa @ref glfwGetVideoModes

@since Added in version 3.0. Replaces glfwGetDesktopMode.

@ingroup monitor