QMap Struct and finding key/value!

[Kris Revi]

So this is my code

// =========================================================================================================== //
// INCLUDE
// =========================================================================================================== //
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "adddevice.h"
#include "QMouseEvent"
#include "QWindow"
#include "Structs.h"
#include <QFile>
#include <QFileInfo>

#include <QCoreApplication>
#include <QCommandLineParser>
#include <QCommandLineOption>
#include "MySocket.h"
#include "QDebug"

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


    // Setup Device Struct
    // ======================================================================================================= //
    QMap<QString, DeviceInfo> board;
    board.insert("Studio Lights", DeviceInfo{"Studio lights", false, "192.168.10.138", "online", "off"});
    board.insert("Neon Heaven", DeviceInfo{"Neon Heaven", true, "192.168.10.146", "online", "off"});
    board.insert("Vitrineskap", DeviceInfo{"Vitrineskap", false, "vitrineskap", "online", "off"});
    board.insert("Voodoo Mask", DeviceInfo{"Voodoo Mask", false, "voodoomask", "online", "off"});
    board.insert("Test Device", DeviceInfo{"Test Device", false, "test123", "online", "off"});

}

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

// =========================================================================================================== //
// BUTTON BINDINGS
// =========================================================================================================== //
void connectTo(QString selected_board)
{
    // Find the IP of the "Selected_board" in the struct

    MySocket client(QUrl(QStringLiteral("ws://192.168.10.122:80")), true); // <---------- and put the IP here
}

// BUTTON BINDINGS
// =========================================================================================================== //

void MainWindow::on_BUTTON_STUDIOLIGHT_clicked()
{
    connectTo(QString("Studio Light"));
}

how do i do what i commented in the code under (BUTTON BINDINGS)? :/

[SGaist]

Hi,

Make "board" a member variable.

[Kris Revi]

@SGaist of the Mainwindow Class?

[mrjj]

@Kris-Revi
Yes currently board is only usable in the constructor but if you move it
to be a member, you can use it to look up the IP
in the on_BUTTON_STUDIOLIGHT_clicked

[Kris Revi]

@mrjj this is how my class looks now

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QMap>
#include <QString>
#include "Structs.h"

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
    QMap<QString, DeviceInfo> board;  // <-------------- board struct
    QMap<QString, Pattern> pattern;   // <-------------- pattern struct
    Hue hue;                          // <-------------------- Hue Struct

private slots:
    void on_BUTTON_ADD_DEVICE_clicked();
    void on_BUTTON_QUIT_clicked();
    void on_BUTTON_MINIMIZE_clicked();
    void on_BUTTON_MAXIMIZE_clicked();

    void on_BUTTON_STUDIOLIGHT_clicked();

private:
    Ui::MainWindow *ui;

protected:
    void mousePressEvent(QMouseEvent *) override;
};
#endif // MAINWINDOW_H

[Kris Revi]

This post is deleted!

[Kris Revi]

What todo now?

[mrjj]

@Kris-Revi
Hi
You mean how to use the map ?

DeviceInfo &di = board["Studio Light"];
connectTo( di.ip ); //

[Kris Revi]

@mrjj yes and thank you :)

[mrjj]

Hi
Ok :)
There is one thing with std::map you need to be aware of.
If you try to use a key you don't have, it will create a new empty DeviceInfo that
it will then return so a more correct way would be

auto key = "Studio Light";
if ( board.count(key) ) {
DeviceInfo &di = board[key];
connectTo( di.ip ); //
} else
qDebug() << "error invalid loopup name";

[Kris Revi]

@mrjj ty for that info :)

void MainWindow::on_BUTTON_STUDIOLIGHT_clicked()
{
    auto key = "Studio lights";
        if ( board.count(key) ) {
            DeviceInfo &di = board[key];
            connectTo( di.ip );
        }
        else
        {
            qDebug() << "error invalid loopup name";
        }
}

all im getting is error invalid loopup name and i have checked the name is correct!

[JonB]

@Kris-Revi
I cannot spot that error on the code you have pasted! Are you sure it does not come from elsewhere, the error message will be indicating a line number?
EDIT You have just edited your message to omit the error message you claimed!

Your new error:

all im getting is error invalid loopup name and i have checked the name is correct!

I take it this is a runtime error, not compile time? So, presumably, that comes from board.count(key) or board[key], so what is the declaration of board? OK, just seen from earlier, @mrjj is answering below....

[mrjj]

Hi
Did you forget to remove the old board in constructor ?

QMap<QString, DeviceInfo> board;

    board.insert("Studio Lights", DeviceInfo{"Studio lights", false, "192.168.10.138", "online", "off"});
    board.insert("Neon Heaven", DeviceInfo{"Neon Heaven", true, "192.168.10.146", "online", "off"});
    board.insert("Vitrineskap", DeviceInfo{"Vitrineskap", false, "vitrineskap", "online", "off"});
    board.insert("Voodoo Mask", DeviceInfo{"Voodoo Mask", false, "voodoomask", "online", "off"});
    board.insert("Test Device", DeviceInfo{"Test Device", false, "test123", "online", "off"});

as else you have 2 (one local and one member) and the one you made of a member will be empty.

[Bonnie]

@Kris-Revi
"Studio Lights" and "Studio lights"?
It is case sensitive.