fix for go module support + fix readData memory leak + fix docker wine support

bluetooth/bluetooth.go

@@ -11,6 +11,7 @@ import (
 	"github.com/therecipe/qt"
 	"github.com/therecipe/qt/core"
 	"github.com/therecipe/qt/network"
+	"reflect"
 	"runtime"
 	"strings"
 	"unsafe"
@@ -4460,14 +4461,14 @@ func callbackQBluetoothSocket_ReadData(ptr unsafe.Pointer, data C.struct_QtBluet
 		retS := cGoUnpackString(data)
 		ret := C.longlong(signal.(func(*string, int64) int64)(&retS, int64(maxSize)))
 		if ret > 0 {
-			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 		}
 		return ret
 	}
 	retS := cGoUnpackString(data)
 	ret := C.longlong(NewQBluetoothSocketFromPointer(ptr).ReadDataDefault(&retS, int64(maxSize)))
 	if ret > 0 {
-		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 	}
 	return ret
 }

cmd/cmd.go

@@ -0,0 +1,13 @@
+// +build cmd
+
+package cmd
+
+import (
+	_ "github.com/therecipe/qt/cmd/qtdeploy"
+	_ "github.com/therecipe/qt/cmd/qtminimal"
+	_ "github.com/therecipe/qt/cmd/qtmoc"
+	_ "github.com/therecipe/qt/cmd/qtrcc"
+	_ "github.com/therecipe/qt/cmd/qtsetup"
+
+	_ "github.com/gopherjs/gopherjs"
+)

cmd/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/cmd

core/core.go

@@ -9,6 +9,7 @@ package core
 import "C"
 import (
 	"github.com/therecipe/qt"
+	"reflect"
 	"runtime"
 	"strings"
 	"unsafe"
@@ -7270,14 +7271,14 @@ func callbackQBuffer_ReadData(ptr unsafe.Pointer, data C.struct_QtCore_PackedStr
 		retS := cGoUnpackString(data)
 		ret := C.longlong(signal.(func(*string, int64) int64)(&retS, int64(l)))
 		if ret > 0 {
-			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 		}
 		return ret
 	}
 	retS := cGoUnpackString(data)
 	ret := C.longlong(NewQBufferFromPointer(ptr).ReadDataDefault(&retS, int64(l)))
 	if ret > 0 {
-		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 	}
 	return ret
 }
@@ -16373,14 +16374,14 @@ func callbackQFileDevice_ReadData(ptr unsafe.Pointer, data C.struct_QtCore_Packe
 		retS := cGoUnpackString(data)
 		ret := C.longlong(signal.(func(*string, int64) int64)(&retS, int64(l)))
 		if ret > 0 {
-			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 		}
 		return ret
 	}
 	retS := cGoUnpackString(data)
 	ret := C.longlong(NewQFileDeviceFromPointer(ptr).ReadDataDefault(&retS, int64(l)))
 	if ret > 0 {
-		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 	}
 	return ret
 }
@@ -19029,7 +19030,7 @@ func callbackQIODevice_ReadData(ptr unsafe.Pointer, data C.struct_QtCore_PackedS
 		retS := cGoUnpackString(data)
 		ret := C.longlong(signal.(func(*string, int64) int64)(&retS, int64(maxSize)))
 		if ret > 0 {
-			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 		}
 		return ret
 	}

internal/binding/files/docs/5.10.0/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs/5.10.0

internal/binding/files/docs/5.10.0/mod.go

@@ -0,0 +1 @@
+package mod

internal/binding/files/docs/5.11.1/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs/5.11.1

internal/binding/files/docs/5.11.1/mod.go

@@ -0,0 +1 @@
+package mod

internal/binding/files/docs/5.12.0/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs/5.12.0

internal/binding/files/docs/5.12.0/mod.go

@@ -0,0 +1 @@
+package mod

internal/binding/files/docs/5.6.3/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs/5.6.3

internal/binding/files/docs/5.6.3/mod.go

@@ -0,0 +1 @@
+package mod

internal/binding/files/docs/5.7.0/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs/5.7.0

internal/binding/files/docs/5.7.0/mod.go

@@ -0,0 +1 @@
+package mod

internal/binding/files/docs/5.7.1/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs/5.7.1

internal/binding/files/docs/5.7.1/mod.go

@@ -0,0 +1 @@
+package mod

internal/binding/files/docs/5.8.0/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs/5.8.0

internal/binding/files/docs/5.8.0/mod.go

@@ -0,0 +1 @@
+package mod

internal/binding/files/docs/5.9.0/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs/5.9.0

internal/binding/files/docs/5.9.0/mod.go

@@ -0,0 +1 @@
+package mod

internal/binding/files/docs/go.mod

@@ -0,0 +1 @@
+module github.com/therecipe/qt/internal/binding/files/docs

internal/binding/files/docs/mod.go

@@ -0,0 +1,12 @@
+package docs
+
+import (
+	_ "github.com/therecipe/qt/internal/binding/files/docs/5.10.0"
+	_ "github.com/therecipe/qt/internal/binding/files/docs/5.11.1"
+	_ "github.com/therecipe/qt/internal/binding/files/docs/5.12.0"
+	_ "github.com/therecipe/qt/internal/binding/files/docs/5.6.3"
+	_ "github.com/therecipe/qt/internal/binding/files/docs/5.7.0"
+	_ "github.com/therecipe/qt/internal/binding/files/docs/5.7.1"
+	_ "github.com/therecipe/qt/internal/binding/files/docs/5.8.0"
+	_ "github.com/therecipe/qt/internal/binding/files/docs/5.9.0"
+)

internal/binding/templater/function_go.go

@@ -353,7 +353,7 @@ func goFunctionBody(function *parser.Function) string {
 					if !UseJs() {
 						fmt.Fprint(bb, "retS := cGoUnpackString(data)\n")
 						fmt.Fprintf(bb, "ret := %v\n", converter.GoInput(fmt.Sprintf("signal.(%v)(%v)", converter.GoHeaderInputSignalFunction(function), converter.GoInputParametersForCallback(function)), function.Output, function, function.PureGoOutput))
-						fmt.Fprint(bb, "if ret > 0 {\nC.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))\n}\n")
+						fmt.Fprint(bb, "if ret > 0 {\nC.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))\n}\n")
 						fmt.Fprint(bb, "return ret")
 					} else {
 						fmt.Fprint(bb, "return 0")
@@ -423,7 +423,7 @@ func goFunctionBody(function *parser.Function) string {
 						if !UseJs() {
 							fmt.Fprint(bb, "retS := cGoUnpackString(data)\n")
 							fmt.Fprintf(bb, "ret := %v\n", converter.GoInput(fmt.Sprintf("New%vFromPointer(ptr).%v%vDefault(%v)", strings.Title(class.Name), strings.Replace(strings.Title(function.Name), parser.TILDE, "Destroy", -1), function.OverloadNumber, converter.GoInputParametersForCallback(function)), function.Output, function, function.PureGoOutput))
-							fmt.Fprint(bb, "if ret > 0 {\nC.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))\n}\n")
+							fmt.Fprint(bb, "if ret > 0 {\nC.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))\n}\n")
 							fmt.Fprint(bb, "return ret")
 						} else {
 							fmt.Fprint(bb, "return 0")

internal/binding/templater/template_go.go

@@ -633,7 +633,7 @@ import "C"
 	}
 
 	fmt.Fprint(bb, "import (\n")
-	for _, m := range append(parser.GetLibs(), "qt", "strings", "unsafe", "log", "runtime", "fmt", "errors", "js", "time", "hex") {
+	for _, m := range append(parser.GetLibs(), "qt", "strings", "unsafe", "log", "runtime", "fmt", "errors", "js", "time", "hex", "reflect") {
 		mlow := strings.ToLower(m)
 		if strings.Contains(inputString, fmt.Sprintf(" %v.", mlow)) ||
 			strings.Contains(inputString, fmt.Sprintf("\t%v.", mlow)) ||
@@ -645,7 +645,7 @@ import "C"
 			strings.Contains(inputString, fmt.Sprintf(")%v.", mlow)) ||
 			strings.Contains(inputString, fmt.Sprintf("std_%v.", mlow)) {
 			switch mlow {
-			case "strings", "unsafe", "log", "runtime", "fmt", "errors", "time":
+			case "strings", "unsafe", "log", "runtime", "fmt", "errors", "time", "reflect":
 				fmt.Fprintf(bb, "\"%v\"\n", mlow)
 
 			case "hex":

internal/cmd/cmd.go

@@ -13,6 +13,8 @@ import (
 	"github.com/sirupsen/logrus"
 
 	"github.com/therecipe/qt/internal/utils"
+
+	_ "github.com/therecipe/qt/internal/binding/files/docs"
 )
 
 var buildVersion = "no build version"

internal/examples/qml/custom_scheme/main.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"os"
+
+	"github.com/therecipe/qt/core"
+	"github.com/therecipe/qt/network"
+	"github.com/therecipe/qt/qml"
+	"github.com/therecipe/qt/quick"
+	"github.com/therecipe/qt/widgets"
+)
+
+func main() {
+
+	widgets.NewQApplication(len(os.Args), os.Args)
+
+	var view = quick.NewQQuickView(nil)
+
+	var (
+		factory = qml.NewQQmlNetworkAccessManagerFactory()
+		manager *network.QNetworkAccessManager
+	)
+
+	factory.ConnectCreate(func(parent *core.QObject) *network.QNetworkAccessManager {
+		if manager != nil {
+			return manager
+		}
+
+		manager = network.NewQNetworkAccessManager(parent)
+
+		manager.ConnectCreateRequest(func(op network.QNetworkAccessManager__Operation, req *network.QNetworkRequest, outgoingData *core.QIODevice) *network.QNetworkReply {
+			if req.Url().Scheme() != "custom" {
+				return manager.CreateRequestDefault(op, req, outgoingData)
+			}
+
+			return NewCustomReply(op, req)
+		})
+
+		return manager
+	})
+
+	view.Engine().SetNetworkAccessManagerFactory(factory)
+	view.SetSource(core.NewQUrl3("qrc:///qml/myfile.qml", 0)) //can be custom:/// as well
+	view.SetResizeMode(quick.QQuickView__SizeRootObjectToView)
+	view.Show()
+
+	widgets.QApplication_Exec()
+}

internal/examples/qml/custom_scheme/qml/myfile.qml

@@ -0,0 +1,26 @@
+import QtQuick 2.0
+import "custom:///qml/"
+
+Rectangle {
+  id: page
+  width: 320; height: 480
+  color: "lightblue"
+
+  Text {
+    id: helloText
+    text: "hello from qrc:///"
+    y: 30
+    anchors.horizontalCenter: page.horizontalCenter
+    font.pointSize: 24; font.bold: true
+  }
+
+  SomeClass {
+    height: parent.height/2
+
+    anchors {
+      left: parent.left
+      right: parent.right
+      bottom: parent.bottom
+    }
+  }
+}

internal/examples/qml/custom_scheme/reply.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"github.com/therecipe/qt/core"
+	"github.com/therecipe/qt/network"
+)
+
+//the custom QNetworkReply is partially modeled after
+//https://code.qt.io/cgit/qt/qtbase.git/tree/src/network/access/qnetworkreplyfileimpl.cpp?h=5.7
+//and
+//https://blogs.kde.org/2010/08/28/implementing-reusable-custom-qnetworkreply
+
+func NewCustomReply(op network.QNetworkAccessManager__Operation, req *network.QNetworkRequest) *network.QNetworkReply {
+
+	var customReply = network.NewQNetworkReply(nil)
+	customReply.SetRequest(req)
+	customReply.SetUrl(req.Url())
+	customReply.SetOperation(op)
+	customReply.SetFinished(true)
+
+	//there will be at least 2 requests
+	//one for the qmldir file: https://doc.qt.io/qt-5/qtqml-syntax-directoryimports.html#directory-listing-qmldir-files
+	//and another request for each *.qml file that is exported through the qmldir file
+
+	println("requested:", req.Url().ToString(0))
+
+	var content string
+	if req.Url().FileName(0) == "qmldir" {
+		content = "SomeClass myfile.qml"
+	} else {
+		content = `import QtQuick 2.0
+
+    Rectangle {
+        id: page
+        width: 320; height: 480
+        color: "lightgreen"
+
+        Text {
+            id: helloText
+            text: "hello from custom:///"
+            y: 30
+            anchors.horizontalCenter: page.horizontalCenter
+            font.pointSize: 24; font.bold: true
+        }
+    }`
+	}
+
+	//in case of multiple customReply::ReadData calls for a single reply, an offset is used
+	var offset int64
+	customReply.ConnectReadData(func(data *string, maxSize int64) int64 {
+
+		if offset >= int64(len(content)) {
+			return -1
+		}
+
+		var number = func(a, b int64) int64 {
+			if a <= b {
+				return a
+			}
+			return b
+		}(maxSize, int64(len(content))-offset)
+
+		*data = string([]byte(content)[offset : offset+number])
+		offset += number
+
+		customReply.SetAttribute(network.QNetworkRequest__HttpStatusCodeAttribute, core.NewQVariant7(200))
+		customReply.SetAttribute(network.QNetworkRequest__HttpReasonPhraseAttribute, core.NewQVariant14("OK"))
+
+		return number
+	})
+
+	customReply.ConnectIsSequential(func() bool {
+		return true
+	})
+
+	customReply.ConnectBytesAvailable(func() int64 {
+		return int64(len(content)) - offset
+	})
+
+	customReply.Open(core.QIODevice__ReadOnly | core.QIODevice__Unbuffered)
+	customReply.SetHeader(network.QNetworkRequest__ContentLengthHeader, core.NewQVariant9(int64(len(content))))
+
+	customReply.MetaDataChanged()
+	customReply.DownloadProgress(int64(len(content)), int64(len(content)))
+	customReply.ReadyRead()
+	customReply.Finished()
+
+	return customReply
+}

internal/examples/qml/prop/prop.go

@@ -17,9 +17,10 @@ func main() {
 		object    = component.Create(nil)
 	)
 
-	fmt.Println("Property value:", object.Property("someNumber").ToInt(false))
+	var someBool bool
+	fmt.Println("Property value:", object.Property("someNumber").ToInt(&someBool), someBool)
 	object.SetProperty("someNumber", core.NewQVariant7(5000))
-	fmt.Println("Property value:", object.Property("someNumber").ToInt(false))
+	fmt.Println("Property value:", object.Property("someNumber").ToInt(&someBool), someBool)
 	object.SetProperty("someNumber", core.NewQVariant7(200))
-	fmt.Println("Property value:", object.Property("someNumber").ToInt(false))
+	fmt.Println("Property value:", object.Property("someNumber").ToInt(&someBool), someBool)
 }

internal/utils/utils.go

@@ -6,6 +6,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"strings"
+	"time"
 
 	"github.com/sirupsen/logrus"
 )
@@ -90,7 +91,7 @@ func GoQtPkgPath(s ...string) string {
 func RunCmd(cmd *exec.Cmd, name string) string {
 	fields := logrus.Fields{"_func": "RunCmd", "name": name, "cmd": strings.Join(cmd.Args, " "), "env": strings.Join(cmd.Env, " "), "dir": cmd.Dir}
 	Log.WithFields(fields).Debug("Execute")
-	out, err := cmd.CombinedOutput()
+	out, err := runCmdHelper(cmd)
 	if err != nil {
 		Log.WithError(err).WithFields(fields).Error("failed to run command")
 		println(string(out))
@@ -103,7 +104,7 @@ func RunCmd(cmd *exec.Cmd, name string) string {
 func RunCmdOptional(cmd *exec.Cmd, name string) string {
 	fields := logrus.Fields{"_func": "RunCmdOptional", "name": name, "cmd": strings.Join(cmd.Args, " "), "env": strings.Join(cmd.Env, " "), "dir": cmd.Dir}
 	Log.WithFields(fields).Debug("Execute")
-	out, err := cmd.CombinedOutput()
+	out, err := runCmdHelper(cmd)
 	if err != nil && !strings.Contains(string(out), "No template (-t) specified") {
 		Log.WithError(err).WithFields(fields).Error("failed to run command")
 		println(string(out))
@@ -114,10 +115,23 @@ func RunCmdOptional(cmd *exec.Cmd, name string) string {
 func RunCmdOptionalError(cmd *exec.Cmd, name string) (string, error) {
 	fields := logrus.Fields{"_func": "RunCmdOptionalError", "name": name, "cmd": strings.Join(cmd.Args, " "), "env": strings.Join(cmd.Env, " "), "dir": cmd.Dir}
 	Log.WithFields(fields).Debug("Execute")
-	out, err := cmd.CombinedOutput()
+	out, err := runCmdHelper(cmd)
 	if err != nil {
 		Log.WithError(err).WithFields(fields).Error("failed to run command")
 		println(string(out))
 	}
 	return string(out), err
 }
+
+func runCmdHelper(cmd *exec.Cmd) (out []byte, err error) {
+	if _, ok := os.LookupEnv("WINEDEBUG"); ok {
+		go func() { out, err = cmd.CombinedOutput() }()
+		for range time.NewTicker(250 * time.Millisecond).C {
+			if cmd.ProcessState != nil && cmd.ProcessState.Exited() {
+				break
+			}
+		}
+		return
+	}
+	return cmd.CombinedOutput()
+}

network/network.go

@@ -10,6 +10,7 @@ import "C"
 import (
 	"github.com/therecipe/qt"
 	"github.com/therecipe/qt/core"
+	"reflect"
 	"runtime"
 	"strings"
 	"unsafe"
@@ -1175,14 +1176,14 @@ func callbackQAbstractSocket_ReadData(ptr unsafe.Pointer, data C.struct_QtNetwor
 		retS := cGoUnpackString(data)
 		ret := C.longlong(signal.(func(*string, int64) int64)(&retS, int64(maxSize)))
 		if ret > 0 {
-			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 		}
 		return ret
 	}
 	retS := cGoUnpackString(data)
 	ret := C.longlong(NewQAbstractSocketFromPointer(ptr).ReadDataDefault(&retS, int64(maxSize)))
 	if ret > 0 {
-		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 	}
 	return ret
 }
@@ -6350,14 +6351,14 @@ func callbackQLocalSocket_ReadData(ptr unsafe.Pointer, data C.struct_QtNetwork_P
 		retS := cGoUnpackString(data)
 		ret := C.longlong(signal.(func(*string, int64) int64)(&retS, int64(c)))
 		if ret > 0 {
-			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 		}
 		return ret
 	}
 	retS := cGoUnpackString(data)
 	ret := C.longlong(NewQLocalSocketFromPointer(ptr).ReadDataDefault(&retS, int64(c)))
 	if ret > 0 {
-		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 	}
 	return ret
 }
@@ -14003,14 +14004,14 @@ func callbackQNetworkReply_ReadData(ptr unsafe.Pointer, data C.struct_QtNetwork_
 		retS := cGoUnpackString(data)
 		ret := C.longlong(signal.(func(*string, int64) int64)(&retS, int64(maxSize)))
 		if ret > 0 {
-			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 		}
 		return ret
 	}
 	retS := cGoUnpackString(data)
 	ret := C.longlong(NewQNetworkReplyFromPointer(ptr).ReadDataDefault(&retS, int64(maxSize)))
 	if ret > 0 {
-		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 	}
 	return ret
 }

serialport/serialport.go

@@ -10,6 +10,7 @@ import "C"
 import (
 	"github.com/therecipe/qt"
 	"github.com/therecipe/qt/core"
+	"reflect"
 	"runtime"
 	"strings"
 	"unsafe"
@@ -410,14 +411,14 @@ func callbackQSerialPort_ReadData(ptr unsafe.Pointer, data C.struct_QtSerialPort
 		retS := cGoUnpackString(data)
 		ret := C.longlong(signal.(func(*string, int64) int64)(&retS, int64(maxSize)))
 		if ret > 0 {
-			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+			C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 		}
 		return ret
 	}
 	retS := cGoUnpackString(data)
 	ret := C.longlong(NewQSerialPortFromPointer(ptr).ReadDataDefault(&retS, int64(maxSize)))
 	if ret > 0 {
-		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer(C.CString(retS)), C.size_t(ret))
+		C.memcpy(unsafe.Pointer(data.data), unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&retS)).Data), C.size_t(ret))
 	}
 	return ret
 }