/// <summary>
/// Implementation of the INotifiable Notify method.
/// </summary>
/// <remarks>Receives notification messages from the native HTMLViewer control.</remarks>
/// <param name="notifydata">Pointer to a Notification struct.</param>
void INotifiable.Notify(IntPtr notifydata)
{
//marshal data to custom nmhtml struct
//Marshal.PtrToStructure doesn't work so marshalling items individually
NM_HTMLVIEW nmhtml = new NM_HTMLVIEW();
nmhtml.hwndFrom = (IntPtr)Marshal.ReadInt32(notifydata, 0);
nmhtml.idFrom = Marshal.ReadInt32(notifydata, 4);
nmhtml.code = Marshal.ReadInt32(notifydata, 8);
nmhtml.szTarget = (IntPtr)Marshal.ReadInt32(notifydata, 12);
nmhtml.szData = (IntPtr)Marshal.ReadInt32(notifydata, 16);
nmhtml.dwCookie = (IntPtr)Marshal.ReadInt32(notifydata, 20);
nmhtml.szExInfo = (IntPtr)Marshal.ReadInt32(notifydata, 24);
//check the incoming message code and process as required
switch(nmhtml.code)
{
//hotspotclick
case (int)HtmlNotification.Hotspot:
//use the new PtrToStringAuto to get string whether Unicode or ASCII
string url = OpenNETCF.Runtime.InteropServices.MarshalEx.PtrToStringAuto(nmhtml.szTarget);
HotSpotClickEventArgs e = new HotSpotClickEventArgs(url);
OnHotSpotClick(e);
break;
//navigate complete
case (int)HtmlNotification.NavigateComplete:
OnNavigateComplete(new EventArgs());
break;
//document complete
case (int)HtmlNotification.DocumentComplete:
OnDocumentComplete(new EventArgs());
break;
//title notification
case (int)HtmlNotification.Title:
//copy target to title field
//byte[] titlechars = new byte[256];
//Marshal.Copy(nmhtml.szTarget, titlechars, 0, 256);
//m_title = System.Text.Encoding.ASCII.GetString(titlechars, 0, 256);
//marshal the title
m_title = MarshalEx.PtrToStringAuto(nmhtml.szTarget);
break;
}
}
/// <summary>
/// Handles notification messages from the native control
/// </summary>
/// <param name="m">Message</param>
protected override void OnNotifyMessage(ref Microsoft.WindowsCE.Forms.Message m)
{
//check message is a notification
if (m.Msg == (int)WM.NOTIFY)
{
//marshal notification data into NMHDR struct
NMHDR hdr = (NMHDR)Marshal.PtrToStructure(m.LParam, typeof(NMHDR));
//context menu event is a special case
if (hdr.code == (int)NM.CONTEXTMENU)
{
//if the ContextMenu property is set show the user's context menu
//if no ContextMenu is set we ignore this notification and use the built in Context Menu.
if (this.ContextMenu != null)
{
NM_HTMLCONTEXT nmhc = (NM_HTMLCONTEXT)Marshal.PtrToStructure(m.LParam, typeof(NM_HTMLCONTEXT));
//cancel default context menu
m.Result = new IntPtr(-1);
//set position
System.Drawing.Point pos = new System.Drawing.Point(nmhc.x, nmhc.y);
//show popup
this.ContextMenu.Show(this, pos);
}
}
else
{
//get html viwer specific data from the notification message
NM_HTMLVIEW nmhtml = (NM_HTMLVIEW)Marshal.PtrToStructure(m.LParam, typeof(NM_HTMLVIEW));
//marshal the Target string
string target = MarshalEx.PtrToStringAuto(nmhtml.szTarget);
//check the incoming message code and process as required
switch (nmhtml.code)
{
//hotspot click
case (int)NM.HOTSPOT:
case (int)NM.BEFORENAVIGATE:
OnNavigating(new WebBrowserNavigatingEventArgs(target));
break;
//navigate complete
case (int)NM.NAVIGATECOMPLETE:
OnNavigated(new WebBrowserNavigatedEventArgs(target));
break;
//document complete
case (int)NM.DOCUMENTCOMPLETE:
OnDocumentCompleted(new WebBrowserDocumentCompletedEventArgs(target));
break;
//title notification
case (int)NM.TITLECHANGE:
case (int)NM.TITLE:
m_title = target;
OnDocumentTitleChanged(new EventArgs());
break;
}
}
}
base.OnNotifyMessage(ref m);
}
