1 //HelloWorld3.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 *The purpose of this example is to demonstrate creating not only 12 *our own custom application class, but our first case of deriving 13 *a new window class 14 */ 15  16 #include "vcf/ApplicationKit/ApplicationKit.h" 17  18 using namespace VCF; 19  20  21 /** 22 *This is our main window class. The code that was previously 23 *in the initialization method of our app class, but will now 24 *migrate to our constructor 25 */ 26 class HelloWorld3Window : public Window { 27 public: 28     HelloWorld3Window() { 29         /** 30         *Here we get the current running Application instance for 31         *this process 32         */ 33         Application* runningApp = Application::getRunningInstance(); 34  35         /** 36         *This gets the app instance‘s class name to put in the 37         *caption of our man window 38         */ 39         String appname = runningApp->getClassName(); 40  41         /** 42         *this sets the caption of the main window 43         */ 44         setCaption( appname + " - Hello World!" ); 45  46         /* 47         *This will set the bounds of the window, see the 48         *previous HelloWorld example for a more in depth 49         *discussion of this. 50         */ 51         Rect bounds( 100.0, 100.0, 500.0, 500.0 ); 52         setBounds( &bounds ); 53  54         /** 55         *Here we can use the debug trace with variable 56         *arguments just like printf(), in this 57         *case printing out the value of our "this" pointer 58         *and the string value returned by the Rect‘s toString() 59         *method 60         */ 61         StringUtils::trace( Format("HelloWorld3Window constructor @%p, bounds: %s\n") 62                                     % this % bounds.toString().c_str() ); 63  64         /** 65         *Show the main window. Previously we had used 66         *the show(), but setVisible(true) also works 67         */ 68         setVisible( true ); 69  70         Locale loc(Locale::lcPolish, Locale::ccPoland ); 71         System::setCurrentThreadLocale( &loc ); 72  73     } 74  75     /** 76     *Always, always, always make our destructor virtual 77     */ 78     virtual ~HelloWorld3Window(){}; 79  80  81     virtual void paint( GraphicsContext* c ) { 82         Window::paint( c ); 83  84         Locale loc(Locale::lcPolish, Locale::ccPoland ); 85         c->getCurrentFont()->setName( "Arial" ); 86         c->textAt( 20, 20, loc.translate( "Hello" ) ); 87     } 88 }; 89  90  91  92  93 class HelloWorld3Application : public Application { 94 public: 95  96     HelloWorld3Application( int argc, char** argv ): Application(argc, argv) { 97  98     } 99 100     virtual bool initRunningApplication(){101         bool result = Application::initRunningApplication();102 103         /**104         *allocate some dummy temporary memory - we105         *will clean this up in the termination method of our106         *app class107         */108         m_tmpDummyBuffer = new char[4096];109 110         /**111         *Create a new instance of our window class112         */113         Window* mainWindow = new HelloWorld3Window();114 115 116         /**117         *set the app‘s main window118         */119         setMainWindow(mainWindow);120 121         return result;122     }123 124     /**125     *terminates the running application. This is where126     *you can do your clean up of resources127     *In our case we‘ll clean up the memory we had allocated in our128     *initRunningApplication() method above129     *and then call the super classes terminateRunningApplication()130     */131     virtual void terminateRunningApplication() {132         delete [] m_tmpDummyBuffer;133         m_tmpDummyBuffer = NULL;134 135         /**136         *here‘s an example of outputting to137         *debug messages. In Win32 these get138         *resolved to a call to OutputDebugString139         *thus if you‘re debugging with VC++ you‘ll140         *see this in the Output window.141         */142         StringUtils::trace( "HelloWorld3Application::terminateRunningApplication() cleaned up memory\n" );143         Application::terminateRunningApplication();144     }145 146 147     char* m_tmpDummyBuffer;148 };149 150 151 int main(int argc, char *argv[])152 {153     Application* app = new HelloWorld3Application( argc, argv );154 155     Application::main();156 157     return 0;158 }159 160 161 /**162 $Id: HelloWorld3.cpp 3625 2008-06-22 02:47:47Z ddiego $163 */