Dialog QML issue

michaelL

Hi,

i press a button and then a dialog will open.
Inside the dialog i am using a property string variable connected to a Q_OBJECT on c++.
I handle the variable change inside the dialog and do some string compair.

This is working fine but if i close the dialog and re-open it, the variable is never changed even if, on c++ side, i QEMIT a signal.

So here is my QML dialog code:

Dialog
{
    id: messageDialog
    height: 300
    width: 500
    visible: false

    property string message_from_UART:SerialPort.message_UART

    onMessage_from_UARTChanged:
    {
         if(message_from_UART === "Offset Fehlgeschlagen Links")
         {
             offset_links.color="red";
         }
         else if(message_from_UART === "Offset Erfolgreich Links")
         {
             offset_links.color="green";
         }
         else if(message_from_UART === "PWDN")
         {
             offset_links.color="grey";
             offset_rechts.color="grey";
             kalibrierung_rechts.color="grey";
             kalibrierung_links.color="grey";
         }
         else if(message_from_UART === "Offset Fehlgeschlagen Rechts")
         {
             offset_rechts.color="red";
         }
         else if(message_from_UART === "Offset Erfolgreich Rechts")
         {
             offset_rechts.color="green";
         }
         else if(message_from_UART === "Kalibrierung fehlgeschlagen Rechts")
         {
             kalibrierung_rechts.color="red";
         }
         else if(message_from_UART === "Kalibrierung erfolgreich abgeschlossen Rechts")
         {
             kalibrierung_rechts.color="green";
         }
         else if(message_from_UART === "Kalibrierung fehlgeschlagen Links")
         {
             kalibrierung_links.color="red";
         }
         else if(message_from_UART === "Kalibrierung erfolgreich abgeschlossen Links")
         {
             kalibrierung_links.color="green";
         }
         else if(message_from_UART==="Sensor Problem oder Sensor nicht angeschlossen")
         {
             spinner.visible=false;
             errormessage.visible=true;
             value_start_button=0;
             SerialPort.write_UART("PWDN:");
             image.source= "Start_schwarz.png";
             start.text= "Start";
         }
    }

this property "property string message_from_UART:SerialPort.message_UART" reads the QEMIT value from c++
I declaire the c++ Q_OBJECT like this:

Q_OBJECT
Q_PROPERTY(QString message_UART READ message WRITE message_write NOTIFY messageChanged)

I did the same test, open the dialog -> receive a signal -> compair the string ->close the dialog->open dialog->send a different string and emit signal-> signal dont get handle in "onMessage_from_UARTChange"

Any idea?

Edited: Please surround the code with ``` - p3c0