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Windows QPA: Allow the native Windows virtual keyboard to be disabled 

This change provides a way to disable the automatic showing of the native
Windows on-screen virtual keyboard when a text editing widget is
selected on a system without a physical keyboard, by enabling the new
AA_MSWindowsDisableVirtualKeyboard application attribute, allowing
applications to use a custom virtual keyboard implementation.

Fixes: QTBUG-76088
Change-Id: Id76f9673a2e4081e5325662f3e3b4b102d133b9a
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
bb10
Andre de la Rocha 2019-11-13 16:39:52 +01:00
parent abbdd634cd
commit 18f22fea7c
4 changed files with 13 additions and 3 deletions
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1
src/corelib/global/qnamespace.h
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@ -523,6 +523,7 @@ public:
AA_DontUseNativeMenuBar = 6,
AA_MacDontSwapCtrlAndMeta = 7,
AA_Use96Dpi = 8,
AA_MSWindowsDisableVirtualKeyboard = 9,
#if QT_DEPRECATED_SINCE(5, 14)
AA_X11InitThreads Q_DECL_ENUMERATOR_DEPRECATED = 10,
#endif

6
src/corelib/global/qnamespace.qdoc
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@ -293,6 +293,12 @@
This attribute must be set before QGuiApplication is constructed.
This value was added in 5.13
\value AA_MSWindowsDisableVirtualKeyboard When this attribute is set,
Windows' native on-screen virtual keyboard will not be shown
automatically when a text input widget gains focus on a system
without a physical keyboard.
This value was added in 5.15
The following values are deprecated or obsolete:
\value AA_ImmediateWidgetCreation This attribute is no longer fully

3
src/plugins/platforms/windows/qwindowsinputcontext.cpp
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@ -285,7 +285,8 @@ void QWindowsInputContext::showInputPanel()
// the Surface seems unnecessary there anyway. But leave it hidden for IME.
// Only trigger the native OSK if the Qt OSK is not in use.
static bool imModuleEmpty = qEnvironmentVariableIsEmpty("QT_IM_MODULE");
if (imModuleEmpty
bool nativeVKDisabled = QCoreApplication::testAttribute(Qt::AA_MSWindowsDisableVirtualKeyboard);
if ((imModuleEmpty && !nativeVKDisabled)
&& QOperatingSystemVersion::current()
>= QOperatingSystemVersion(QOperatingSystemVersion::Windows, 10, 0, 16299)) {
ShowCaret(platformWindow->handle());

6
src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
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@ -393,12 +393,14 @@ HRESULT QWindowsUiaMainProvider::GetPropertyValue(PROPERTYID idProp, VARIANT *pR
// Control type converted from role.
auto controlType = roleToControlTypeId(accessible->role());
// The native OSK should be disbled if the Qt OSK is in use.
// The native OSK should be disbled if the Qt OSK is in use,
// or if disabled via application attribute.
static bool imModuleEmpty = qEnvironmentVariableIsEmpty("QT_IM_MODULE");
bool nativeVKDisabled = QCoreApplication::testAttribute(Qt::AA_MSWindowsDisableVirtualKeyboard);
// If we want to disable the native OSK auto-showing
// we have to report text fields as non-editable.
if (controlType == UIA_EditControlTypeId && !imModuleEmpty)
if (controlType == UIA_EditControlTypeId && (!imModuleEmpty || nativeVKDisabled))
controlType = UIA_TextControlTypeId;
setVariantI4(controlType, pRetVal);