mirror/AC6_recomp
1
0
Fork 0
mirror of https://github.com/sal063/AC6_recomp synced 2026-08-21 23:00:53 -04:00
Code Issues Packages Projects Releases Wiki Activity

Silence the Alt+key system beep (unhandled WM_SYSCHAR)

Browse Source 
While Alt is held every keypress arrives as WM_SYSKEYDOWN->WM_SYSCHAR,
and an unhandled WM_SYSCHAR reaching DefWindowProc on a menu-less
window triggers MessageBeep which causes camera panning on KB+M dinged constantly.
Consume it (and answer WM_MENUCHAR with MNC_CLOSE) when the window has
no menu.
This commit is contained in:
Dipshet
2026-08-07 23:29:53 +02:00
parent 42b6ab3b85
commit 07d09128e6
1 changed files with 25 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
thirdparty/rexglue-sdk/src/native/ui/window_win.cpp
Vendored
+25
View File
@@ -970,6 +970,22 @@ bool Win32Window::HandleKeyboard(UINT message, WPARAM wParam, LPARAM lParam,
case WM_CHAR:
OnKeyChar(e, destruction_receiver);
break;
case WM_SYSCHAR:
// An unhandled WM_SYSCHAR reaching DefWindowProc on a window with no
// menu triggers the system "ding" (MessageBeep) for every Alt+key
// press. A menu-less window has no mnemonics to dispatch, so consume
// it. This also swallows Alt+Space's keyboard route to the system
// menu - standard for borderless games. Alt+F4 lives in
// WM_SYSKEYDOWN handling, which still reaches DefWindowProc.
if (!GetMenu(hwnd_)) {
static bool s_syschar_logged = false;
if (!s_syschar_logged) {
s_syschar_logged = true;
REXLOG_INFO("Win32Window: consuming WM_SYSCHAR (Alt+key) - system beep suppressed");
}
e.set_handled(true);
}
break;
default:
break;
}
@@ -1230,6 +1246,15 @@ LRESULT Win32Window::WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lPar
return 0;
} break;
case WM_MENUCHAR: {
// Belt to the WM_SYSCHAR braces above: if a system-char ever reaches
// menu processing on a menu-less window, answer "close the menu, no
// beep" instead of the default MNC_IGNORE ding.
if (!GetMenu(hwnd_)) {
return MAKELRESULT(0, MNC_CLOSE);
}
} break;
case WM_TABLET_QUERYSYSTEMGESTURESTATUS:
return
// disables press and hold (right-click) gesture