ContainerControl Constructor

ContainerControl Constructor ()


Initializes a new instance of the ContainerControl class.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)


The following code example inherits from the ScrollableControl class and implements the IContainerControl interface. Implementation is added to the ActiveControl property and the ActivateControl method.

using namespace System;
using namespace System::Windows::Forms;
using namespace System::Drawing;

public ref class MyContainer: public ScrollableControl, public IContainerControl
   Control^ activeControl;

      // Make the container control Blue so it can be distinguished on the form.
      this->BackColor = Color::Blue;

      // Make the container scrollable.
      this->AutoScroll = true;

   property Control^ ActiveControl 
      // Add implementation to the IContainerControl.ActiveControl property.
      virtual Control^ get()
         return activeControl;

      virtual void set( Control^ value )

         // Make sure the control is a member of the ControlCollection.
         if ( this->Controls->Contains( value ) )
            activeControl = value;

   // Add implementations to the IContainerControl.ActivateControl(Control) method.
   virtual bool ActivateControl( Control^ active )
      if ( this->Controls->Contains( active ) )
         // Select the control and scroll the control into view if needed.
         active->Select(  );
         this->ScrollControlIntoView( active );
         this->activeControl = active;
         return true;

      return false;

.NET Framework
Available since 1.1
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