c++ - 需要帮助弄清楚如何使用 Qdial 更改我的 main 中的变量

Question

我一直试图弄清楚 QT 有一段时间了，所以我想我只是问这个问题。我一直在尝试让一系列六个 Qdial 基本上在其更改时返回它们的值，并使用它来指示我的 main 值中的变量。

这是main.cpp

#include <QApplication>
#include <iostream>
#include "audioOut.h"
#include "ADSR.h"
#include "Oscillators.h"
#include "mainwindow.h"

using namespace std;
atomic<double> frequencyOutput{0.0};
ADSREnvelope envelope;
double octaveBaseFrequency = 110.0;
const double twelfthRootOfTwo = 1.05946309436;
int osc1 = 0;
int osc2 = 0;
double lfoHertz = 5.0;
double lfoAmp = 0.5;
double bias1 = 1.0;
double bias2 = 1.0;

double MakeNoise(double dTime)
{
    // Mixed sine and square waves
    double dOutput = envelope.GetAmplitude(dTime) *
        (+bias1 * osc(frequencyOutput * 0.5, dTime, osc1, lfoHertz, lfoAmp) + bias2 * osc(frequencyOutput, dTime, osc2, lfoHertz, lfoAmp));
    return dOutput * 0.4; // Master Volume
}


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

    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    vector<wstring> devices = audioOut<short>::Enumerate(); //find output device

    for (auto d : devices) wcout << "found output device: " << d << endl;

    audioOut<short> sound(devices[0], 44100, 1, 8, 512); //creates an object of the AudioOut Class

    sound.SetUserFunction(MakeNoise);

    cout << "_____________________________________________________________\n"
            "|    | |    |    | |   | |    |    | |   | |   | |    |     |\n"
            "|    | |    |    | |   | |    |    | |   | |   | |    |     |\n"
            "|    |S|    |    |F|   |G|    |    |J|   |K|   |L|    |     |\n"
            "|     -     |     -     -     |     -     -     -     |     |\n"
            "|  Z  |  X  |  C  |  V  |  B  |  N  |  M  |  ,  |  .  |  /  |\n"
            "-------------------------------------------------------------";



    int currentKey = -1;
    bool keyPressed = false;
    while(w.isVisible())
    {
        a.processEvents();


        keyPressed = false;
        for (int k = 0; k < 16; k++)
        {
            if (GetAsyncKeyState((unsigned char)("ZSXCFVGBNJMK\xbcL\xbe\xbf"[k])) & 0x8000)
            {
                if (currentKey != k)
                {
                    frequencyOutput = octaveBaseFrequency * pow(twelfthRootOfTwo, k);
                    envelope.KeyPress(sound.GetTime());
                    wcout << "\rNote On : " << sound.GetTime() << "s " << frequencyOutput << "Hz";
                    currentKey = k;
                }

                keyPressed = true;
            }
        }

        if (!keyPressed)
        {
            if (currentKey != -1)
            {
                wcout << "\rNote Off: " << sound.GetTime() << "s                        ";
                envelope.KeyDepress(sound.GetTime());
                currentKey = -1;
            }
        }
    }

    return 0;
}

这是我的 mainWindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"


MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}




void MainWindow::on_OSC1Select_valueChanged(int value)
{

}

基本上我希望 OSC1Select 的值主要更改 int osc1，我假设这是使用 on_OSC1Select_valueChanged 方法完成的，但我真的不知道如何。任何帮助将不胜感激

标签： c++qt-creator