public virtual void CommandStateChange(int command, bool enable)
{
DWebBrowserEvents2_CommandStateChangeEvent commandstatechangeEvent = new DWebBrowserEvents2_CommandStateChangeEvent(command, enable);
this.parent.RaiseOnCommandStateChange(this.parent, commandstatechangeEvent);
}
/// <summary>
/// Event handler for CommandStateChange -- update our internal command states
/// then re-fire this event to listeners.
/// </summary>
/// <param name="sender">object sending the event</param>
/// <param name="e">event parameters</param>
private void AxWebBrowser_CommandStateChange(
object sender, DWebBrowserEvents2_CommandStateChangeEvent e)
{
// constatns representing possible command state changes
const int CSC_UPDATECOMMANDS = -1;
const int CSC_NAVIGATEFORWARD = 1;
const int CSC_NAVIGATEBACK = 2;
// Back button state changed
if (e.command == CSC_NAVIGATEBACK)
{
m_goBackCommand.SetEnabled(e.enable);
}
// Forward button state changed
else if (e.command == CSC_NAVIGATEFORWARD)
{
m_goForwardCommand.SetEnabled(e.enable);
}
// General command state change
else if (e.command == CSC_UPDATECOMMANDS)
{
// Do manual update on m_stopCommand
m_stopCommand.SetEnabled(m_browser.Busy);
// No update needed for m_refreshCommand or m_goHomeCommand
// (both are always enabled)
}
// fire the CommandStateChanged event so listeners can update their UI
OnCommandStateChanged(EventArgs.Empty);
}
internal void RaiseOnCommandStateChange(object sender, DWebBrowserEvents2_CommandStateChangeEvent e)
{
if ((this.CommandStateChange != null))
{
this.CommandStateChange(sender, e);
}
}