pub fn has_raw_handler(handle: &ControlHandle, handler_id: UINT_PTR) -> bool {
    let handle = handle.hwnd().expect("This type of control cannot have a raw handler.");
    let subclass_proc: SUBCLASSPROC = Some(process_raw_events);
    let mut tmp_value = 0;
    unsafe { GetWindowSubclass(handle, subclass_proc, handler_id, &mut tmp_value) != 0 }
}
/** 
    Check if a raw handler with the specified handler_id is currently bound on the control.
    This function will panic if the handle parameter is not a window control.
*/
Check if a raw handler with the specified handler_id is currently bound on the control.
This function will panic if the handle parameter is not a window control.
Check if a raw handler with the specified handler_id is currently bound on the control . This function will panic if the handle parameter is not a window control .
pub fn has_raw_handler(handle: &ControlHandle, handler_id: UINT_PTR) -> bool {
    let handle = handle.hwnd().expect("This type of control cannot have a raw handler.");
    let subclass_proc: SUBCLASSPROC = Some(process_raw_events);
    let mut tmp_value = 0;
    unsafe { GetWindowSubclass(handle, subclass_proc, handler_id, &mut tmp_value) != 0 }
}
pub fn has_raw_handler ( handle : & ControlHandle , handler_id : UINT_PTR ) -> bool { let handle = handle . hwnd ( ) . expect ( " " ) ; let subclass_proc : SUBCLASSPROC = Some ( process_raw_events ) ; let mut tmp_value = 0 ; unsafe { GetWindowSubclass ( handle , subclass_proc , handler_id , & mut tmp_value ) != 0 } }
Check if a raw handler with the specified handler_id is currently bound on the control.
Check if a raw handler with the specified handler_id is currently bound on the control .
handle
&ControlHandle
handler_id
UINT_PTR