Function windows_sys::Win32::UI::WindowsAndMessaging::DefMDIChildProcA

pub unsafe extern "system" fn DefMDIChildProcA(
    hwnd: HWND, 
    umsg: u32, 
    wparam: WPARAM, 
    lparam: LPARAM
) -> LRESULT

Required features: "Win32_UI_WindowsAndMessaging", "Win32_Foundation"