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>
Jorijn van der Graaf
c62109caf3