sdk/samples/WPFSamples/ScrollViewerScrollChanged/cpp/scrollviewer_code.cpp

   1 //ScrollViewer_Code.cpp file
   2
   3 using namespace System;
   4 using namespace System::Windows;
   5 using namespace System::Windows::Controls;
   6 using namespace System::Windows::Media;
   7 using namespace System::Windows::Shapes;
   8 using namespace System::Threading;
   9
  10 namespace ScrollViewer_Sample {
  11
  12    public ref class app : Application {
  13
  14    private:
  15       Rectangle^ rect1;
  16       ScrollViewer^ scrView1;
  17       StackPanel^ sPanel;
  18       Window^ mainWindow;
  19       TextBlock^ txt1;
  20       TextBlock^ txt2;
  21
  22    protected:
  23       virtual void OnStartup (StartupEventArgs^ e) override
  24       {
  25          Application::OnStartup(e);
  26          CreateAndShowMainWindow();
  27       };
  28
  29    public:
  30       void sChanged (System::Object^ sender, ScrollChangedEventArgs^ e)
  31       {
  32          txt1->Text = "ScrollViewer.HorizontalScrollBarVisibility is set to: " + scrView1->ComputedHorizontalScrollBarVisibility.ToString();
  33          txt2->Text = "ScrollViewer.VerticalScrollBarVisibility is set to: " + scrView1->ComputedVerticalScrollBarVisibility.ToString();
  34       };
  35
  36    public:
  37       void CreateAndShowMainWindow ()
  38       {
  39          // Create the application's main window
  40          mainWindow = gcnew Window();
  41          mainWindow->Height = 400;
  42          mainWindow->Width = 400;
  43
  44
  45          // Create a ScrollViewer
  46          scrView1 = gcnew ScrollViewer();
  47          txt1 = gcnew TextBlock();
  48          txt2 = gcnew TextBlock();
  49          scrView1->CanContentScroll = true;
  50          scrView1->HorizontalScrollBarVisibility = ScrollBarVisibility::Auto;
  51          scrView1->VerticalScrollBarVisibility = ScrollBarVisibility::Auto;
  52
  53          // Create a StackPanel
  54          sPanel = gcnew StackPanel();
  55          sPanel->Orientation = Orientation::Vertical;
  56          sPanel->Children->Add(txt1);
  57          sPanel->Children->Add(txt2);
  58
  59          // Add the first rectangle to the StackPanel
  60          rect1 = gcnew Rectangle();
  61          rect1->Stroke = Brushes::Black;
  62          rect1->Fill = Brushes::SkyBlue;
  63          rect1->Height = 400;
  64          rect1->Width = 400;
  65          sPanel->Children->Add(rect1);
  66
  67          scrView1->ScrollChanged += gcnew ScrollChangedEventHandler(this,&ScrollViewer_Sample::app::sChanged);
  68          scrView1->Content = sPanel;
  69          mainWindow->Content = scrView1;
  70          mainWindow->Title = "ScrollViewer Sample";
  71          mainWindow->Show();
  72
  73
  74       };
  75    };
  76
  77    private ref class EntryClass sealed {
  78
  79    public:
  80       [System::STAThread()]
  81       static void Main ()
  82       {
  83          ScrollViewer_Sample::app^ app = gcnew ScrollViewer_Sample::app();
  84          app->Run();
  85       };
  86    };
  87 }
  88
  89 //Entry Point:
  90 [System::STAThreadAttribute()]
  91 void main ()
  92 {
  93    return ScrollViewer_Sample::EntryClass::Main();
  94 }