diff --git a/multi-link b/multi-link
index 682fc0e0..7faa1ecf 160000
--- a/multi-link
+++ b/multi-link
@@ -1 +1 @@
-Subproject commit 682fc0e0925ef34749453d2080496b10f5d82fde
+Subproject commit 7faa1ecf0c98f2db7f3b3acab418586d047c7f68
diff --git a/src/qqt_header.pri b/src/qqt_header.pri
index 02ee1f19..1c9e500e 100644
--- a/src/qqt_header.pri
+++ b/src/qqt_header.pri
@@ -320,8 +320,11 @@ defineTest(add_defines_QQt){
         #if you use qextserialport, open the annotation
         #suggest: Qt5 using factory-packed, Qt4 using from Qt5, extra using this.
         #DEFINES += __QEXTSERIALPORT__
+
         #if compiler QtSerialPort module manual, note this line is a good idea. default: qt4 qextserialport
         lessThan(QT_MAJOR_VERSION, 5): DEFINES += __QEXTSERIALPORT__
+        #to winRT, ues qextserialport
+        contains (DEFINES, __WINRT__): DEFINES += __QEXTSERIALPORT__
         #to ios, use qextserialport
         contains (DEFINES, __IOS__): DEFINES += __QEXTSERIALPORT__
         #android qt5 has QtSerialport?
diff --git a/src/qqt_source.pri b/src/qqt_source.pri
index ba02a002..23f50771 100644
--- a/src/qqt_source.pri
+++ b/src/qqt_source.pri
@@ -19,13 +19,13 @@ HEADERS += $$PWD/qqt.h \
     $$PWD/qqtversion.h \
     $$PWD/qqt-qt.h
 #platform header
-contains (QSYS_PRIVATE, Win32|Windows|Win64 || MSVC32|MSVC|MSVC64) {
+contains (DEFINES, __WIN__) {
     #win32 base header
     HEADERS += $$PWD/qqtwin.h
-} else:contains (QSYS_PRIVATE, macOS||iOS||iOSSimulator) {
+} else:contains (DEFINES, __DARWIN__) {
     #mac base header
     HEADERS += $$PWD/qqtdarwin.h
-} else:contains (QSYS_PRIVATE, Android||AndroidX86) {
+} else:contains (DEFINES, __ANDROID__) {
     #android base header
     HEADERS += $$PWD/qqtandroid.h
 } else {
@@ -48,12 +48,13 @@ SOURCES += \
 HEADERS += \
     $$PWD/core/qqtevent.h
 
+##################Process Module###############################
 #后台进程支持。
-#这个只有ios不支持，在源文件pri里处理。
+#ios\winRT 不支持。
 #可以添加QQtProcess适配，正常平台使用QProcess继承下来，iOS下使用fork封装。
 DEFINES += __PROCESSSUPPORT__
 #ios has no backend process
-contains(QSYS_PRIVATE, iOS||iOSSimulator) {
+contains(DEFINES, __IOS__ || __WINRT__) {
     DEFINES -= __PROCESSSUPPORT__
 }