HelloWorld2

  1 //HelloWorld2.cpp
  2 
  3 /*
  4 Copyright 2000-2004 The VCF Project.
  5 Please see License.txt in the top level directory
  6 where you installed the VCF.
  7 */
  8 
  9 
 10 /**
 11 *This builds on our work in the first example, HelloWorld
 12 *This will demonstrate customizing the VCF::Application class
 13 *and positioning the window where we want it
 14 */
 15 
 16 /**
 17 *standard headers here
 18 */
 19 #include "vcf/ApplicationKit/ApplicationKit.h"
 20 
 21 
 22 using namespace VCF;
 23 
 24 /**
 25 *This is our application derived class that
 26 *we are going to customize.
 27 *We override one method: the initRunningApplication() method,
 28 *which surprisingly enough, is called to initialize the running
 29 *application.
 30 *In this method we can execute whatever appropriate start up code is
 31 *neccessary for our application, including createing the main
 32 *window like we‘ll do below.
 33 */
 34 class HelloWorld2Application : public Application {
 35 public:
 36 
 37     HelloWorld2Application( int argc, char** argv ): Application(argc, argv) {
 38 
 39     }
 40 
 41     virtual bool initRunningApplication(){
 42         /**
 43         *call the super classes initRunningApplication()
 44         *and store off the result.
 45         *If anything goes wrong here that will prevent our app
 46         *from starting, we should return false, to attempt
 47         *to gracefully allow the application to shut down
 48         */
 49         bool result = Application::initRunningApplication();
 50 
 51         /**
 52         *Create the window as before
 53         */
 54         Window* mainWindow = new Window();
 55 
 56         /**
 57         *set the main window, again as we did in the first
 58         *HelloWorld example
 59         */
 60         setMainWindow( mainWindow );
 61 
 62         /**
 63         *set the bounds for the main window.
 64         *First create a VCF::Rect object on the stack
 65         *passing in the desired left, top, right, and
 66         *bottom coordinates. Our coordinates are screen
 67         *coordinates, since this is the main window and
 68         *it does not have a parent. As usual, the coordinates
 69         *origin is in the top left corner of the screen
 70         *
 71         *In our case we will pass in 100.0, 100.0 for the left
 72         *and top coordinates, and 500.0, and 500.0 for the
 73         *right and bottom, thus giving us a window with a
 74         *width and height of 400.0 and 400.0 respectively.
 75         */
 76         Rect mainWindowBounds( 100.0, 100.0, 500.0, 500.0 );
 77 
 78         /**
 79         *pass in a pointer to the rect to the window
 80         *via the setBounds() call
 81         */
 82         mainWindow->setBounds( &mainWindowBounds );
 83 
 84         /**
 85         set caption
 86         */
 87         mainWindow->setCaption( "Hello World 2" );
 88 
 89         /**
 90         *Show the main window
 91         */
 92         mainWindow->show();
 93 
 94         return result;
 95     }
 96 
 97 };
 98 
 99 
100 /**
101 *the applications one and only main function
102 */
103 int main(int argc, char *argv[])
104 {
105     /**
106     *here we create an instance of our application class on the heap
107     */
108     Application* app = new HelloWorld2Application( argc, argv );
109 
110     /**
111     *call the appMain() method
112     */
113     Application::main();
114 
115     return 0;
116 }
117 
118 
119 /**
120 $Id: HelloWorld2.cpp 2647 2006-04-28 16:42:38Z kdmix $
121 */