How to convert PWSTR to QString to display in a listbox

In Windows programming, PWSTR represents a pointer to a wide character (UTF-16) string, and QString is used in Qt for string handling. To convert a PWSTR to a QString and display it in a QListBox (or QListWidget) in a Qt application, you can follow these steps:

1. Convert PWSTR to QString:

   Use the QString::fromWCharArray function to convert the PWSTR to a QString.

   cppCopy code
   PWSTR pstr = L"Hello, World!"; // Replace with your PWSTR
   
   QString qstr = QString::fromWCharArray(pstr);
   
   

2. Add QString to QListBox (QListWidget):

   Assuming you have a QListWidget named listWidget in your UI, you can add the converted QString to the list as an item.

   cppCopy code
   QListWidgetItem *item = new QListWidgetItem(qstr);
   
   listWidget->addItem(item);
   
   

   Alternatively, if you're using a simple QListBox (not QListWidget), you can add items directly to it.

   cppCopy code
   ui->listBox->addItem(qstr);
   
   

Here's a full example demonstrating how to convert PWSTR to QString and add it to a QListWidget:

cppCopy code
#include <QApplication>

#include <QWidget>

#include <QListWidget>



int main(int argc, char *argv[])

{

    QApplication a(argc, argv);



    PWSTR pstr = L"Hello, World!"; // Replace with your PWSTR

    QString qstr = QString::fromWCharArray(pstr);



    QWidget widget;

    QListWidget listWidget(&widget);

    listWidget.addItem(qstr);



    widget.show();



    return a.exec();

}

Remember that the example assumes you have a properly set up Qt application with a UI containing the QListWidget. The main idea is to convert the PWSTR to a QString and then add it as an item to the QListWidget or QListBox.