Merge remote-tracking branch 'origin/5.4' into 5.5

Conflicts:
	examples/xml/htmlinfo/simpleexample.html
	examples/xml/rsslisting/rsslisting.cpp
	qmake/generators/win32/msbuild_objectmodel.cpp
	src/3rdparty/harfbuzz-ng/src/hb-private.hh
	src/corelib/global/qlogging.cpp
	src/corelib/io/qstorageinfo_unix.cpp
	src/corelib/thread/qwaitcondition_unix.cpp
	src/gui/kernel/qguiapplication.cpp
	src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp
	src/testlib/doc/src/qt-webpages.qdoc
	tests/auto/other/qaccessibility/tst_qaccessibility.cpp

Change-Id: Ib272ff0bc30a1a5d51275eb3cd2f201dc82c11ff

1 files changed, 7 insertions, 8 deletions

diff --git a/src/plugins/platforms/windows/qwindowskeymapper.cpp b/src/plugins/platforms/windows/qwindowskeymapper.cpp
index db89402c05..0e26a17223 100644
--- a/src/plugins/platforms/windows/qwindowskeymapper.cpp
+++ b/src/plugins/platforms/windows/qwindowskeymapper.cpp
@@ -567,16 +567,15 @@ static inline int toKeyOrUnicode(int vk, int scancode, unsigned char *kbdBuffer,
     Q_ASSERT(vk > 0 && vk < 256);
     int code = 0;
     QChar unicodeBuffer[5];
-    // While key combinations containing alt and ctrl might trigger the third assignment of a key
-    // (for example "alt+ctrl+q" causes '@' on a German layout), ToUnicode often does not return the
-    // wanted character if only the ctrl modifier is used. Thus we unset this modifier temporarily
-    // if it is not used together with alt.
-    const unsigned char controlState = kbdBuffer[VK_MENU] ? 0 : kbdBuffer[VK_CONTROL];
-    if (controlState)
-        kbdBuffer[VK_CONTROL] = 0;
     int res = ToUnicode(vk, scancode, kbdBuffer, reinterpret_cast<LPWSTR>(unicodeBuffer), 5, 0);
-    if (controlState)
+    // When Ctrl modifier is used ToUnicode does not return correct values. In order to assign the
+    // right key the control modifier is removed for just that function if the previous call failed.
+    if (res == 0 && kbdBuffer[VK_CONTROL]) {
+        const unsigned char controlState = kbdBuffer[VK_CONTROL];
+        kbdBuffer[VK_CONTROL] = 0;
+        res = ToUnicode(vk, scancode, kbdBuffer, reinterpret_cast<LPWSTR>(unicodeBuffer), 5, 0);
         kbdBuffer[VK_CONTROL] = controlState;
+    }
     if (res)
         code = unicodeBuffer[0].toUpper().unicode();