How to access the Accepted and Close Event of QDialogbox

learnist

i have a Qdialogbox and in this qdialogbox i have a thread(named thread3) which executes

Print_Descendants_key(IUIAutomation* pUIAutomation, IUIAutomationElement* pParent, int indent)

so in my Accepted event(when i click okay in buttonbox) and closeEvent of dialog box, i want to quit/terminate this thread3. How can i do that ?

probably something like this ??

void KeyComd::closeEvent(QCloseEvent* event)
{
    std::terminate();
    thread3.terminate(); ??
}

void KeyComd::accepted()
{
    std::terminate();
}

for reference here is my QDialog code

#include "KeyComd.h"
#include "ui_KeyComd.h"
#include <QtCore>
#include <QtGui>
#include <vector> 
#include<QDebug>
#include "ExecutionContext.h"
#include "XMLParser.h"
#include "Logger.h"
#include "BlockCommand.h"
#include "UIAElementUtils.h"

ExecutionContext exc;
QStringList refreshed_elements;

KeyComd::KeyComd(QWidget *parent)
    : QDialog(parent)
{
    ui.setupUi(this);
    HRESULT hr = exc.init();    
}

KeyComd::~KeyComd()
{
}
void KeyComd::on_showbutton_clicked()
{
    ui.elements_listwidget->clear();
    desktop_elements.clear();

    std::thread thread3(&KeyComd::Print_step, this); // Here it calls a thread, because of this thread ,the execution of "Print_Descendants_key" function happens in a separate thread from main thread
    thread3.detach();
}

void KeyComd::Print_step()
{
    Print_Descendants_key(exc.pUIAutomation, nullptr, 0);
}

void KeyComd::Print_Descendants_key(IUIAutomation* pUIAutomation, IUIAutomationElement* pParent, int indent)
{
    ///Function which appends 1000 list-items in a QListWidget called "elements_listwidget" in my QDialog.
}

jsulm

@learnist said in How to access the Accepted and Close Event of QDialogbox:

std::thread thread3(&KeyComd::Print_step, this);

If you want to access your thread outside of KeyComd::on_showbutton_clicked() then make thread3 member variable first...

learnist

@jsulm said in How to access the Accepted and Close Event of QDialogbox:

If you want to access your thread outside of KeyComd::on_showbutton_clicked() then make thread3 member variable first...

How can i do that ?? , where do i declare it to make it a member variable ? in my .h or . cpp file ??

SGaist

Hi,

In your class declaration.

Note that this is basic C++. If you do not know that, I highly encourage you to first improve your C++ knowledge before going further.