[3.14] gh-152502: Detect the curses mouse interface portably (GH-152705) - #152734
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…ythonGH-152705) The mouse interface (getmouse(), the BUTTON* constants, ...) was gated on the ncurses-specific NCURSES_MOUSE_VERSION macro, so it was dropped on other curses implementations that provide it, such as NetBSD curses and PDCurses. Gate it instead on a configure capability probe or the PDCURSES macro. Probe for getmouse() with its X/Open getmouse(MEVENT *) signature, since PDCurses declares an incompatible getmouse(void) unless built for the ncurses mouse API, which PDC_NCMOUSE now always selects. The is_*() state-query methods named in the original change do not exist on 3.15, so only the mouse interface is backported. (cherry picked from commit 7bbea4f) Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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The mouse interface (getmouse(), the BUTTON* constants, ...) was gated on the ncurses-specific NCURSES_MOUSE_VERSION macro, so it was dropped on other curses implementations that provide it, such as NetBSD curses and PDCurses (the latter underpins windows-curses).
It is now gated on a configure capability probe or the PDCURSES macro. getmouse() is probed with its X/Open getmouse(MEVENT *) signature specifically, because PDCurses declares an incompatible getmouse(void) unless built for the ncurses mouse API; PDC_NCMOUSE is now always defined so PDCurses selects that interface.
The is_*() state-query methods named in the original change (GH-152705) do not exist on 3.14, so only the mouse interface is backported.
Verified by reconfiguring + rebuilding on 3.14 (the probe resolves HAVE_CURSES_GETMOUSE=1) and running test_curses.
(cherry picked from commit 7bbea4f)