diff options
Diffstat (limited to 'src/plugins/platforms/windows/qwindowscontext.cpp')
-rw-r--r-- | src/plugins/platforms/windows/qwindowscontext.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp index 5745fc6d19..b7a866679f 100644 --- a/src/plugins/platforms/windows/qwindowscontext.cpp +++ b/src/plugins/platforms/windows/qwindowscontext.cpp @@ -79,6 +79,7 @@ #include <stdio.h> #include <windowsx.h> #include <comdef.h> +#include <dbt.h> QT_BEGIN_NAMESPACE @@ -322,6 +323,13 @@ bool QWindowsContext::initTouch(unsigned integrationOptions) QWindowSystemInterface::registerTouchDevice(touchDevice); d->m_systemInfo |= QWindowsContext::SI_SupportsTouch; + + // A touch device was plugged while the app is running. Register all windows for touch. + if (QGuiApplicationPrivate::is_app_running) { + for (QWindowsWindow *w : qAsConst(d->m_windows)) + w->registerTouchWindow(); + } + return true; } @@ -965,6 +973,13 @@ bool QWindowsContext::windowsProc(HWND hwnd, UINT message, } switch (et) { + case QtWindows::DeviceChangeEvent: + if (d->m_systemInfo & QWindowsContext::SI_SupportsTouch) + break; + // See if there are any touch devices added + if (wParam == DBT_DEVNODES_CHANGED) + initTouch(); + break; case QtWindows::KeyboardLayoutChangeEvent: if (QWindowsInputContext *wic = windowsInputContext()) wic->handleInputLanguageChanged(wParam, lParam); |