Type Definition windows_sys::Win32::UI::Controls::DTT_CALLBACK_PROC

pub type DTT_CALLBACK_PROC = Option<unsafe extern "system" fn(hdc: HDC, psztext: PWSTR, cchtext: i32, prc: *mut RECT, dwflags: u32, lparam: LPARAM) -> i32>;

Required features: "Win32_UI_Controls", "Win32_Foundation", "Win32_Graphics_Gdi"