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ofParameterGroup parameters;
ofEventListener listenerParameters;

parameters.add(param1.set("p1", 1.f, 0.f, 10.f));
parameters.add(param2.set("p2", 10.f, 1.f, 50.f));
parameters.add(param3.set("p3", 5, 0, 10));

listenerParameters = parameters.parameterChangedE().newListener([this](ofAbstractParameter& e){
    string n = e.getName();
    ofLogNotice("ofApp") << "Changed " << n << ": " << e;

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// ofApp.h

ofParameterGroup params{"Params"};
void Changed_Params(ofAbstractParameter &e);

ofParameter<bool> bAnimate;
ofParameter<void> bRefresh;
ofParameter<float> size;

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// How to do a toolbar in Dear ImGui.

const float toolbarSize = 50;

void DockSpaceUI()
{
	ImGuiViewport* viewport = ImGui::GetMainViewport();
	ImGui::SetNextWindowPos(viewport->Pos + ImVec2(0, toolbarSize));
	ImGui::SetNextWindowSize(viewport->Size - ImVec2(0, toolbarSize));
	ImGui::SetNextWindowViewport(viewport->ID);

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// CHANGES MADE:
// Added more clarifying comments inside the function.
// Removed MSVC warning C6011 - null pointer dereference.
// Fixed a slight grammar error - "This demo app only demonstrate" => "This demo app only demonstrates"

// Demonstrate using DockSpace() to create an explicit docking node within an existing window.
// Note: You can use most Docking facilities without calling any API. You DO NOT need to call DockSpace() to use Docking!
// - Drag from window title bar or their tab to dock/undock. Hold SHIFT to disable docking.
// - Drag from window menu button (upper-left button) to undock an entire node (all windows).
// About dockspaces:

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static ImGuiDockNodeFlags dockspace_flags = ImGuiDockNodeFlags_PassthruCentralNode;

// We are using the ImGuiWindowFlags_NoDocking flag to make the parent window not dockable into,
// because it would be confusing to have two docking targets within each others.
ImGuiWindowFlags window_flags = ImGuiWindowFlags_MenuBar | ImGuiWindowFlags_NoDocking;

ImGuiViewport* viewport = ImGui::GetMainViewport();
ImGui::SetNextWindowPos(viewport->Pos);
ImGui::SetNextWindowSize(viewport->Size);
ImGui::SetNextWindowViewport(viewport->ID);

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Encoding to Hap from the command line using FFmpeg

For users who prefer working with a command line or need to access advanced encoding settings for Hap the popular FFmpeg library can be used to work with Hap movies.

1. If this is your first time using FFmpeg you may need to install it on your system, or compile it from source. In either case be sure that Snappy is enabled as part of the binary. If you already have FFmpeg on your system with Snappy enabled, you can skip this step.

   You can check that your version of FFmpeg can encode Hap using

   ffmpeg -encoders | grep hap
   

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ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

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//
//  imgui_color_gradient.cpp
//  imgui extension
//
//  Created by David Gallardo on 11/06/16.


#include "imgui_color_gradient.h"
#include "imgui_internal.h"

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namespace ImGui
{
	static bool SelectFile(const std::string &path, std::string &selected, const std::vector<std::string> &ext={}) {
		bool ret = false;
		if(ofFile(path).isDirectory()) {
			if(TreeNode(ofFilePath::getBaseName(path).c_str())) {
				ofDirectory dir;
				if(!ext.empty()) {
					dir.allowExt("");
					for(auto &&e : ext) {

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 if (ofxImGui::BeginWindow("TEST", mainSettings, flags)){
            ImGui::BeginGroup();
            {
                int numRows = 2;
                int numWidgets = 3;

                float spcx =ImGui::GetStyle().ItemSpacing.x;
                float spcy =ImGui::GetStyle().ItemSpacing.y;

                float maxWidth = ImGui::GetContentRegionAvail().x - spcx;