EXL

QUiLoader uiLoader;
QFile file("sortdialog.ui");
QWidget *sortDialog = uiLoader.load(&file);
if (sortDialog) {
    ....
}

#ifndef TESTCLASS_H
#define TESTCLASS_H

#include "ui_MainWindow.h"

class TestClass
{
public:
    TestClass();
    void changeTextOnForm(Ui_MainWindow *mainWindow);
};

#endif // TESTCLASS_H

#include "TestClass.h"

TestClass::TestClass()
{
}

void TestClass::changeTextOnForm(Ui_MainWindow *mainWindow)
{
    mainWindow->label_2->setText(QString("Text from ") + Q_FUNC_INFO);
    mainWindow->textBrowser->append(mainWindow->label_2->text());
}

...
void MainWindow::on_pushButton_clicked()
{
    TestClass testClass;
    testClass.changeTextOnForm(this->ui);
}
...

double Rand(double fMin, double fMax)
{
    double f = (double)rand() / RAND_MAX;
    return fMin + f * (fMax - fMin);
}

Часть кода separate_image выглядит следующим образом:

void separateImage(char* path_to_image)
{
    ...
}

void MainWindow::separateImage(char* path_to_image)
{
    ...
}

ui->label->setStyleSheet("QLabel {"
                             "border-style: solid;"
                             "border-width: 1px;"
                             "border-color: black; "
                             "}");

QGraphicsDropShadowEffect* effect = new QGraphicsDropShadowEffect(this);
effect->setOffset(-1, -1);
effect->setColor(Qt::yellow);
ui->label->setGraphicsEffect(effect);

QGraphicsDropShadowEffect *eff = new QGraphicsDropShadowEffect(this);
eff->setOffset(0, 0);
eff->setBlurRadius(5.0);
eff->setColor(Qt::red);
ui->label->setGraphicsEffect(eff);

void Widget::paintEvent(QPaintEvent *)
{
    int off = 10;
    QPainter painter(this);
    QPainterPath path;
    QFont drawFont("Sans", 20);
    path.addText(off, drawFont.pointSize() + off, drawFont, text());
    painter.setRenderHints(QPainter::Antialiasing);
    painter.strokePath(path, QPen(QColor("#FF8C00"), 4));
    painter.fillPath(path, QBrush(Qt::black));
    resize(path.boundingRect().size().toSize().width() + off * 2, path.boundingRect().size().toSize().height() + off * 2);
}

OptionApp *optionDialog = new OptionApp(this);
optionDialog->show();

exl@exl-Lenovo-G560e:~/Projects/genobj > cat main.cpp 
#include <iostream>
#include <cstdlib>

int main()
{
    srand(time(0));
    std::cout << ((rand() % 2) ? "Object #1" : "Object #2") << std::endl;
    return 0;
}
exl@exl-Lenovo-G560e:~/Projects/genobj > g++ main.cpp
exl@exl-Lenovo-G560e:~/Projects/genobj > for ((a=0; a < 10; a++)) do ./a.out; sleep 3; done
Object #2
Object #1
Object #2
Object #2
Object #1
Object #1
Object #1
Object #2
Object #2
Object #1

Tampler()
{
        std::string str(GetCurrentDir());
        str = str + filename + TLDR_EXT;
        m_sMyString = strdup(str.c_str());
}

Tampler()
{
        char *tempstr = (char *)malloc(strlen(GetCurrentDir()) + strlen(filename) + strlen(TLDR_EXT) + 1);
        strcpy(tempstr, GetCurrentDir());
        strcat(tempstr, filename);
        strcat(tempstr, TLDR_EXT);
        m_sMyString = tempstr;
}