Type Alias PFN_vkDebugUtilsMessengerCallbackEXT 

pub type PFN_vkDebugUtilsMessengerCallbackEXT = Option<unsafe extern "system" fn(DebugUtilsMessageSeverityFlagsEXT, DebugUtilsMessageTypeFlagsEXT, *const DebugUtilsMessengerCallbackDataEXT, *mut c_void) -> Bool32>;

https://www.khronos.org/registry/vulkan/specs/latest/man/html/PFN_vkDebugUtilsMessengerCallbackEXT.html

Aliased Type

pub enum PFN_vkDebugUtilsMessengerCallbackEXT {
    None,
    Some(unsafe extern "system" fn(DebugUtilsMessageSeverityFlagsEXT, DebugUtilsMessageTypeFlagsEXT, *const DebugUtilsMessengerCallbackDataEXT, *mut c_void) -> u32),
}

Variants

None

No value.

Some(unsafe extern "system" fn(DebugUtilsMessageSeverityFlagsEXT, DebugUtilsMessageTypeFlagsEXT, *const DebugUtilsMessengerCallbackDataEXT, *mut c_void) -> u32)

Some value of type T.