protected virtual void Dispose(bool disposing)
{
if (!disposed)
{
W32API.ReleaseActCtx(contextHandle);
disposed = true;
}
}
/// <summary>
/// Processes a command key. Overridden in WebKitBrowser to forward key events to the WebKit window.
/// </summary>
/// <param name="msg">The window message to process.</param>
/// <param name="keyData">The key to process.</param>
/// <returns>Success value.</returns>
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
Keys key = (Keys)msg.WParam.ToInt32();
if (key == Keys.Left || key == Keys.Right || key == Keys.Up ||
key == Keys.Down || key == Keys.Tab)
{
W32API.SendMessage(webViewHWND, msg.Msg, msg.WParam, msg.LParam);
return(true);
}
return(base.ProcessCmdKey(ref msg, keyData));
}
/// <summary>
/// Deactivates the activation context, activating the next one down
/// on the 'stack'.
/// </summary>
public void Deactivate()
{
if (disposed)
{
throw new ObjectDisposedException(this.ToString());
}
if (!Initialized)
{
throw new InvalidOperationException("ActivationContext has not been initialized");
}
if (Activated)
{
if (!W32API.DeactivateActCtx(0, lastCookie))
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to deactivate activation context");
}
Activated = false;
}
}
/// <summary>
/// Activates the activation context.
/// </summary>
public void Activate()
{
if (disposed)
{
throw new ObjectDisposedException(this.ToString());
}
if (!Initialized)
{
throw new InvalidOperationException("ActivationContext has not been initialized");
}
if (!Activated)
{
lastCookie = 0;
Activated = W32API.ActivateActCtx(contextHandle, out lastCookie);
if (!Activated)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to activate activation context");
}
}
}
/// <summary>
/// Initializes the activation context.
/// </summary>
public void Initialize()
{
if (disposed)
{
throw new ObjectDisposedException(this.ToString());
}
if (!Initialized)
{
activationContext = new W32API.ACTCTX();
activationContext.cbSize = Marshal.SizeOf(typeof(W32API.ACTCTX));
activationContext.lpSource = this.ManifestFileName;
contextHandle = W32API.CreateActCtx(ref activationContext);
Initialized = (contextHandle != (IntPtr)W32API.INVALID_HANDLE_VALUE);
if (!Initialized)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to initialize activation context");
}
}
}
/// <summary>
/// Initializes a new instance of the WebKitBrowser control.
/// </summary>
public WebKitBrowser()
{
InitializeComponent();
if (LicenseManager.UsageMode != LicenseUsageMode.Designtime)
{
// Control Events
this.Load += new EventHandler(WebKitBrowser_Load);
this.Resize += new EventHandler(WebKitBrowser_Resize);
// If this is the first time the library has been loaded,
// initialize the activation context required to load the
// WebKit COM component registration free
if ((actCtxRefCount++) == 0)
{
activationContext = new ActivationContext("WebKitBrowser.dll.manifest");
activationContext.Initialize();
// TODO: more error handling here
// Enable OLE for drag and drop functionality - WebKit
// will throw an OutOfMemory exception if we don't...
Application.OleRequired();
}
// If this control is brought to focus, focus our webkit child window
this.GotFocus += (s, e) =>
{
W32API.SetFocus(webViewHWND);
};
activationContext.Activate();
webView = new WebViewClass();
activationContext.Deactivate();
}
}
private void WebKitBrowser_Resize(object sender, EventArgs e)
{
// Resize the WebKit control
W32API.MoveWindow(webViewHWND, 0, 0, this.Width - 1, this.Height - 1, true);
}