How To Use Forward and Back Buttons for WebBrowser Control

MORE INFORMATION

The WebBrowser control supports a CommandStateChange event, which is fired whenever the Forward or Back buttons need to be enabled or disabled. The CommandStateChange event is sent with two parameters: a constant indicating the type of button (CSC_NAVIGATEFORWARD or CSC_NAVIGATEBACK), and a Boolean flag indicating whether to enable or disable the button. CSC_NAVIGATEFORWARD and CSC_NAVIGATEBACK are defined in Exdisp.h, which comes with the Internet Client SDK.

// For an MFC application the CommandStateChange event could be handled
// as follows:

#include <exdisp.h>

void CBrowserDlg::OnCommandStateChangeExplorer1(long Command, BOOL Enable)
{
    switch(Command)
    {
     case CSC_NAVIGATEFORWARD:
        // m_ctlForward is a CButton type
        m_ctlForward.EnableWindow(Enable);
        break;

     case CSC_NAVIGATEBACK:
        m_ctlBack.EnableWindow(Enable);
        break;

     default:
        break;
     }
}   

' A Visual Basic application can also implement this
' functionality in this manner:   

Private Sub WebBrowser_CommandStateChange(ByVal Command As Long,ByVal Enable As Boolean)

       Select Case Command
           Case CSC_NAVIGATEBACK
               Back.Enabled = Enable
           Case CSC_NAVIGATEFORWARD
               Forward.Enabled = Enable
       End Select

End Sub