Win32
- SetTitle had a body only for Wayland, so the title passed to Window's
constructor and every later SetTitle left a Win32 window untitled. It
converts the title from UTF-8 and hands it to SetWindowTextW.
- The window class is registered with RegisterClassW, the window made
with CreateWindowExW, and WndProc hands what it does not handle to
DefWindowProcW. An ANSI class has the text of every message converted
to the process code page on its way to WndProc, so SetWindowTextW
alone would not do: under Wine, in CP1252, 日本 in a title came back
as ??. WM_CHAR, whose handler takes wParam for a UTF-16 code unit, got
€ as its CP1252 byte 0x80 and passed it on as U+0080, and 日 and both
halves of a surrogate pair as ?.
- Both message pumps use PeekMessageW and DispatchMessageW. PeekMessageA
converts WM_CHAR to the code page whatever the window's class: on the
Unicode class, an ANSI pump still turned 日 and the surrogates into ?.
Wayland
- SetTitle handed title.data() to xdg_toplevel_set_title, which reads up
to a NUL: a view into a longer string sent the whole string, and an
empty view's null data() made libwayland fail the display with EINVAL.
It copies the view into a std::string, as SetAppId does.
Tests
- TextWin32: the constructor's title, SetTitle with characters outside
the code page, with a view into a longer string and with an empty
title, read back with GetWindowTextW; and é, €, 日 and a surrogate
pair posted as WM_CHAR and delivered by StartSync's own loop, which
returns on the WM_CLOSE posted after them, so a StartSync pumping with
the A functions fails it. The window is disabled, so a real keystroke
can't reach the check. Without the fix every check but the empty title
fails. Like PointerWin32, built on Linux it runs under Wine.
- TitleWayland: SetTitle's set_title requests, read off a wl_display
connected to a socketpair, for a view into a longer string and for an
empty view. Both checks fail without the fix. No compositor.
- PointerWin32 pumps with the W functions, as StartSync now does.
Docs
- AGENTS.md names TextWin32 beside PointerWin32 as the Win32 tests, says
what their Wine runs needed (the vulkan-1 import library, -luuid, which
the link flags lack, #184, and a __libc_single_threaded definition),
and lists TitleWayland among the tests that need no GPU.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Win32
- WM_MOUSEMOVE is handled again: c9ebd44 put the WM_CHAR case where it
was, so currentMousePos stopped following the mouse and onMouseMove
never fired. Positions are read signed (GET_X_LPARAM), since under
capture they run past the client area.
- onMouseEnter and onMouseLeave. The first move over the client area
after a leave is the enter, and arms the TME_LEAVE whose WM_MOUSELEAVE
is the leave. An enter counts only once that is armed, a leave only
after an enter, and a move past the client area is a move only.
- A press captures the mouse, so a drag that leaves the window still
sends its moves and its release, as Wayland's implicit grab does.
Losing the capture releases what is held, and a button-up without its
press fires nothing.
- WM_CLOSE fires onClose and clears open, as xdg_toplevel.close does,
instead of destroying the HWND under the swapchain. WM_DESTROY no
longer posts WM_QUIT, which nothing read.
- ~Window detaches the HWND and destroys it. It stayed on screen, and its
messages went to the freed Window. WndProc hands messages without a
Window to DefWindowProc, and looks the Window up again after an event
that more work follows, in case a listener destroyed it.
- The constructor's message pump leaves input queued for StartSync: the
WM_MOUSEMOVE sent when a window appears under the cursor made an
onMouseEnter nobody could hear yet. The mouse state is reset before
the platform code, no longer after it.
- A window after the first finds its class registered, which showed an
error box.
- The wheel remainder is the window's, no longer a function static that
every window shared, and a leave drops it.
Window
- PointerEnter, PointerMove, PointerLeave and PointerScroll hold the rules
both native backends report the pointer by. An enter puts the entry
position in currentMousePos before onMouseEnter fires, and is followed
by a move, on Wayland too now. scrollRemainder replaces
Device::scrollDetentRemainder, and mouseInside is shared.
Tests
- PointerEnterLeave: enter, move and leave through the wl_pointer
callbacks.
- PointerWin32: posts a real HWND the messages above and pumps them as
StartSync does. Built for x86_64-w64-mingw32 it runs under Wine, and is
skipped where Wine is not on PATH.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
