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Windows: cope if caret blinking is disabled.

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On Windows, when a blinking cursor is enabled, PuTTY uses the system
default blink time from GetCaretBlinkTime(), which can be configured in
Control Panel.

Control Panel allows caret blinking to be disabled entirely, in which
case GetCaretBlinkTime() returns INFINITE. PuTTY wasn't handling this
case; if cursor blinking was enabled in PuTTY but disabled at the system
level, the terminal window would hang, blinking the cursor madly.
This commit is contained in:
Simon Tatham
2025-04-24 11:30:52 +01:00
parent 429478f914
commit c71cc50e52
5 changed files with 31 additions and 4 deletions
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5
terminal/terminal.c
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@ -1381,9 +1381,10 @@ static void term_schedule_tblink(Terminal *term)
*/
static void term_schedule_cblink(Terminal *term)
{
if (term->blink_cur && term->has_focus) {
int delay = CBLINK_DELAY;
if (term->blink_cur && term->has_focus && delay > 0) {
if (!term->cblink_pending)
term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
term->next_cblink = schedule_timer(delay, term_timer, term);
term->cblink_pending = true;
} else {
term->cblinker = true; /* reset when not in use */