juce/source/extras/example projects/Source/Main.cpp

   1 /*
   2   ==============================================================================
   3
   4    Demonstration "Hello World" application in JUCE
   5    Copyright 2008 by Julian Storer.
   6
   7   ==============================================================================
   8 */
   9
  10 #include "../JuceLibraryCode/JuceHeader.h"
  11 #include "MainComponent.h"
  12
  13 //==============================================================================
  14 /**
  15     This is the top-level window that we'll pop up. Inside it, we'll create and
  16     show a component from the MainComponent.cpp file (you can open this file using
  17     the Jucer to edit it).
  18 */
  19 class HelloWorldWindow  : public DocumentWindow
  20 {
  21 public:
  22     //==============================================================================
  23     HelloWorldWindow()
  24         : DocumentWindow ("JUCE Hello World!",
  25                           Colours::lightgrey,
  26                           DocumentWindow::allButtons,
  27                           true)
  28     {
  29         // Create an instance of our main content component, and add it to our window..
  30         setContentOwned (new MainComponent(), true);
  31
  32         // Centre the window on the screen
  33         centreWithSize (getWidth(), getHeight());
  34
  35         // And show it!
  36         setVisible (true);
  37     }
  38
  39     ~HelloWorldWindow()
  40     {
  41         // (the content component will be deleted automatically, so no need to do it here)
  42     }
  43
  44     //==============================================================================
  45     void closeButtonPressed()
  46     {
  47         // When the user presses the close button, we'll tell the app to quit. This
  48         // HelloWorldWindow object will be deleted by the JUCEHelloWorldApplication class.
  49         JUCEApplication::quit();
  50     }
  51 };
  52
  53 //==============================================================================
  54 /** This is the application object that is started up when Juce starts. It handles
  55     the initialisation and shutdown of the whole application.
  56 */
  57 class JUCEHelloWorldApplication : public JUCEApplication
  58 {
  59 public:
  60     //==============================================================================
  61     JUCEHelloWorldApplication()
  62     {
  63     }
  64
  65     ~JUCEHelloWorldApplication()
  66     {
  67     }
  68
  69     //==============================================================================
  70     void initialise (const String& commandLine)
  71     {
  72         // For this demo, we'll just create the main window...
  73         helloWorldWindow = new HelloWorldWindow();
  74
  75         /*  ..and now return, which will fall into to the main event
  76             dispatch loop, and this will run until something calls
  77             JUCEAppliction::quit().
  78
  79             In this case, JUCEAppliction::quit() will be called by the
  80             hello world window being clicked.
  81         */
  82     }
  83
  84     void shutdown()
  85     {
  86         // This method is where you should clear-up your app's resources..
  87
  88         // The helloWorldWindow variable is a ScopedPointer, so setting it to a null
  89         // pointer will delete the window.
  90         helloWorldWindow = 0;
  91     }
  92
  93     //==============================================================================
  94     const String getApplicationName()
  95     {
  96         return "Hello World for JUCE";
  97     }
  98
  99     const String getApplicationVersion()
 100     {
 101         // The ProjectInfo::versionString value is automatically updated by the Jucer, and
 102         // can be found in the JuceHeader.h file that it generates for our project.
 103         return ProjectInfo::versionString;
 104     }
 105
 106     bool moreThanOneInstanceAllowed()
 107     {
 108         return true;
 109     }
 110
 111     void anotherInstanceStarted (const String& commandLine)
 112     {
 113     }
 114
 115 private:
 116     ScopedPointer<HelloWorldWindow> helloWorldWindow;
 117 };
 118
 119
 120 //==============================================================================
 121 // This macro creates the application's main() function..
 122 START_JUCE_APPLICATION (JUCEHelloWorldApplication)