diff options
| -rw-r--r-- | src/plugins/platforms/windows/qwindowstheme.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/plugins/platforms/windows/qwindowstheme.cpp b/src/plugins/platforms/windows/qwindowstheme.cpp index ce0c69f9ed..40be4fa31f 100644 --- a/src/plugins/platforms/windows/qwindowstheme.cpp +++ b/src/plugins/platforms/windows/qwindowstheme.cpp @@ -401,8 +401,13 @@ QVariant QWindowsTheme::themeHint(ThemeHint hint) const return QVariant(booleanSystemParametersInfo(SPI_GETSNAPTODEFBUTTON, false)); case ContextMenuOnMouseRelease: return QVariant(true); - case WheelScrollLines: - return QVariant(int(dWordSystemParametersInfo(SPI_GETWHEELSCROLLLINES, 3))); + case WheelScrollLines: { + int result = 3; + const DWORD scrollLines = dWordSystemParametersInfo(SPI_GETWHEELSCROLLLINES, DWORD(result)); + if (scrollLines != DWORD(-1)) // Special value meaning "scroll one screen", unimplemented in Qt. + result = int(scrollLines); + return QVariant(result); + } default: break; } |