diff options
| -rw-r--r-- | win32/PlatWin.cxx | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/win32/PlatWin.cxx b/win32/PlatWin.cxx index 0ccc8aa13..4d937ac81 100644 --- a/win32/PlatWin.cxx +++ b/win32/PlatWin.cxx @@ -2103,7 +2103,7 @@ LRESULT ListBoxX::WndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam return ::DefWindowProc(hWnd, iMessage, wParam, lParam); case WM_MOUSEWHEEL: - wheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam); + wheelDelta -= static_cast<short>(HIWORD(wParam)); if (abs(wheelDelta) >= WHEEL_DELTA) { int nRows = GetVisibleRows(); int linesToScroll = 1; |