Problem with connect

Cobra91151

Hello! I'm getting some data from cmd process. The problem is when I click button opens empty window. When I click again data is displayed.

Code:

void TestSettings::runCommand(QStringList arguments)
{
    connect(&process, &QProcess::readyReadStandardOutput, this, &TestSettings::readCmdData);
    connect(&process, static_cast<void (QProcess::*)(int)>(&QProcess::finished), this, &TestSettings::finishedProcess);
    process.start("cmd.exe", arguments);
}

void TestSettings::readCmdData()
{
    data = process.readAllStandardOutput();
    emit testData(data);
}

void TestSettings::finishedProcess()
{
    connect(this, &TestSettings::testData, &appTestWidow, &TestWindow::getTestData, Qt::DirectConnection);
    appTestWidow.show();
}

How to fix this problem? Thanks.

Cobra91151

I fixed this issue by adding connect to constructor and now it's displays data at first button click.