Struct winsafe::msg::em::GetLine

pub struct GetLine<'a> {
    pub index: u16,
    pub buffer: &'a mut WString,
}

Available on crate feature user only.

EM_GETLINE message parameters.

The message will retrieve at most buffer.len() - 1 characters for the line, because there must be room for a terminating null.

Returns the number of chars copied to buffer, not counting the terminating null, or None if no chars were copied. There is no documented way to differentiate between an error and an empty line.

Return type: Option<u32>.

Fields

index: u16

buffer: &'a mut WString

Trait Implementations

impl<'a> MsgSend for GetLine<'a>

type RetType = Option<u32>

The specific type of the value returned by the message.

fn convert_ret(&self, v: isize) -> Self::RetType

Converts the generic isize return value to the specific type returned by the message.

fn as_generic_wm(&mut self) -> WndMsg

Converts the specific message parameters struct into the generic WndMsg message struct.