问题
I am using ReadConsoleInputW to read Windows 10 console input. I want to be able to detect when Ctrl+S is pressed. Using the code I have, I can detect Ctrl+Q without issue, but I'm not seeing anything for Ctrl+S. Is Ctrl+S even detectable?
The below is the sequence of INPUT_RECORD I read when pressing Ctrl+S a few times, followed by Ctrl+Q.
Key { key_down: true, repeat_count: 1, key_code: 17, scan_code: 29, wide_char: 0, control_key_state: 40 }
Key { key_down: true, repeat_count: 1, key_code: 17, scan_code: 29, wide_char: 0, control_key_state: 40 }
Key { key_down: true, repeat_count: 1, key_code: 17, scan_code: 29, wide_char: 0, control_key_state: 40 }
Key { key_down: true, repeat_count: 1, key_code: 17, scan_code: 29, wide_char: 0, control_key_state: 40 }
Key { key_down: true, repeat_count: 1, key_code: 17, scan_code: 29, wide_char: 0, control_key_state: 40 }
Key { key_down: true, repeat_count: 1, key_code: 17, scan_code: 29, wide_char: 0, control_key_state: 40 }
Key { key_down: true, repeat_count: 1, key_code: 17, scan_code: 29, wide_char: 0, control_key_state: 40 }
Key { key_down: true, repeat_count: 1, key_code: 17, scan_code: 29, wide_char: 0, control_key_state: 40 }
Key { key_down: true, repeat_count: 1, key_code: 81, scan_code: 16, wide_char: 17, control_key_state: 40 }
If it matters, this is in Rust using wio.
回答1:
Calling SetConsoleMode with ENABLE_WINDOW_INPUT | ENABLE_MOUSE_INPUT | ENABLE_EXTENDED_FLAGS as the second argument (thus disabling ENABLE_PROCESSED_INPUT) did the trick.
回答2:
oconnor0's answer helped me find the solution.
However, I could not get ctrl-s event by disabling ENABLE_PROCESSED_INPUT, so I tried using only ENABLE_WINDOW_INPUT | ENABLE_MOUSE_INPUT | ENABLE_EXTENDED_FLAGS as suggested by oconnor0. This worked, but this means ENABLE_PROCESSED_INPUT is not the culrpit!
So I tried:
//This didn't work
if (!GetConsoleMode(hConsoleInput, &lpMode)) Error();
lpMode &= ~(ENABLE_PROCESSED_INPUT);
if (!SetConsoleMode(hConsoleInput, lpMode)) Error();
//This worked
if (!GetConsoleMode(hConsoleInput, &lpMode)) Error();
lpMode &= ~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT);
if (!SetConsoleMode(hConsoleInput, lpMode)) Error();
Disabling ENABLE_ECHO_INPUT forces you to disable ENABLE_ECHO_INPUT (see msdn), but it isn't the culprit because:
//This didn't work either
if (!GetConsoleMode(hConsoleInput, &lpMode)) Error();
lpMode &= ~(ENABLE_PROCESSED_INPUT | ENABLE_ECHO_INPUT);
if (!SetConsoleMode(hConsoleInput, lpMode)) Error();
So this means that ENABLE_LINE_INPUT is the culprit!
It's not clear why though:
ENABLE_LINE_INPUT 0x0002 The ReadFile or ReadConsole function returns only when a carriage return character is read. If this mode is disabled, the functions return when one or more characters are available.
来源：https://stackoverflow.com/questions/39695431/ctrl-s-input-event-in-windows-console-with-readconsoleinputw