Files
spice2x.github.io/src/spice2x/touch/native/nativetouchhook.h
T
bicarus bd2fbfcb67 touch: restore wintouchemu, fall back to it when native touch hooks fail (#834)
## Link to GitHub Issue or related Pull Request, if one exists
Fixes #833

## Description of change
Last couple PRs - such as #820 #827 #828 - made the native touch hook &
touch injection using `InjectTouchInput` the default path, since it
performs much more reliably with both real touch screens and mouse (or
any other synthetic source).

However, user has reported that WINE lacks `InjectTouchInput` which
means this won't work.

As a fix, revive the old wintouchemu code. Native touch is still the
default, but under following circumstances:

1. if `-touchemuforce` is set, or
2. if any of the required Windows touch APIs are unavailable

then we fail over from native touch to wintouchemu code. 

For Linux, condition #2 would be hit during init, and gracefully switch
over.

Caveat: the poke code for IIDX and Nost will continue to require native
touch, I do not want to maintain two paths for this. This means that
iidx poke will stop working on Linux, unfortunately.

## Testing
Tested on Windows with `-touchemuforce` set. This is mostly reverting
Linux code path back to where we were last release, so this should just
work with wine.
2026-07-26 04:29:45 -07:00

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C++

#pragma once
#include <windows.h>
namespace nativetouch {
struct NativeTouchEvent {
DWORD id;
LONG x;
LONG y;
bool down;
bool move;
bool up;
bool synthetic;
};
using TouchInputFilter = bool (*)(const NativeTouchEvent &event);
bool hook(HMODULE module);
void refresh_contact_lifetime();
void set_input_filter(TouchInputFilter filter);
// true once hook() has installed the native touch stack for the current game;
// such games consume touch through the GetTouchInputInfo hook rather than spicetouch
bool is_hooked();
}