JUCE beginner here, need help with windowapplication tutorial

General JUCE discussion
1

Hey everyone, i’m new to JUCE and coding in general, I’m trying to create a resizable window, I have followed the tutorial exactly but when I run it in xcode I keep getting errors.

https://docs.juce.com/master/tutorial_main_window.html

Screen Shot 2021-04-05 at 14.34.17 ![Screen Shot 2021-04-05 at 14.34.29|690x147]

/*

This file was auto-generated!

It contains the basic startup code for a JUCE application.

==============================================================================
*/

#include “…/JuceLibraryCode/JuceHeader.h”

//==============================================================================
class MainWindowTutorialApplication : public juce::JUCEApplication
{
public:
//…

//==============================================================================
class MainWindow    : public juce::DocumentWindow
{
public:
    MainWindow (juce::String name)  : DocumentWindow (name,
                                                      juce::Colours::lightgrey,
                                                      DocumentWindow::allButtons)
    {
        centreWithSize (300, 200);
        setVisible (true);
    }

    void closeButtonPressed() override
    {
        juce::JUCEApplication::getInstance()->systemRequestedQuit();
    }

private:
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MainWindow)
};

private:
std::unique_ptr mainWindow;
};
//==============================================================================
MainWindowTutorialApplication() {}

const juce::String getApplicationName() override { return ProjectInfo::projectName; }

const juce::String getApplicationVersion() override { return ProjectInfo::versionString; }
bool moreThanOneInstanceAllowed() override { return true; }

//==============================================================================
void initialise (const juce::String& commandLine) override
{
    // Add your application's initialisation code here..
mainWindow.reset (new MainWindow (getApplicationName()));
}

void shutdown() override
{
    // Add your application's shutdown code here..
mainWindow = nullptr;
}

//==============================================================================
void systemRequestedQuit() override
{
    // This is called when the app is being asked to quit: you can ignore this
    // request and let the app carry on running, or call quit() to allow the app to close.
    quit();
}

void anotherInstanceStarted (const String& commandLine) override
{
    // When another instance of the app is launched while this one is running,
    // this method is invoked, and the commandLine parameter tells you what
    // the other instance's command-line arguments were.
}

};

//==============================================================================
// This macro generates the main() routine that launches the app.
START_JUCE_APPLICATION (MainWindowTutorialApplication)

if more info is needed let me know
Any help would be appreciated, thanks!

2

Hi, welcome to the forum. The code you’ve pasted here is really garbled. You should paste code with three “back ticks” ( ` ) in front, and below. Maybe you could edit and clean this up?

So I can’t really read through what’s here. I would suspect from the errors generated that you have a bad character somewhere in your Main.cpp. Because the first 5 errors seem to be wrong (you have those functions), so the last two are causing them, and that’s a typical error to get when you have a wrong character, or semi-colon, etc somewhere in the declarations.

3

In line below const juce::String& is required:

void anotherInstanceStarted (const String& commandLine) override

But i don’t think your error is related to that (@stephenk is probably right).