Function windows_win::raw::message::peek

pub fn peek(
    window: Option<HWND>,
    range_low: Option<UINT>,
    range_high: Option<UINT>,
    handle_type: Option<UINT>
) -> Result<Option<MSG>>

Retrieves a message from the calling thread’s message queue.

A non-blocking version of get().

If no message presents in queue then returns None.

Parameters:

• window - A handle to the window whose messages are to be retrieved. The window must belong to the current thread.
• range_low - Integer value of the lowest message to retrieve.
• range_high - Integer value of the highest message to retrieve.
• handle_type - Determines how retrieved message is handled. See details

Return

• Ok - Successfully retrieved message..
• Err - Impossible to retrieve message.