/// <summary>
/// Scans the interfaces for the filter and it's pins and displays them in a Dialog
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void _interfacesButton_Click(object sender, EventArgs e)
{
Cursor = Cursors.WaitCursor;
PropertiesDialog pd = null;
// are we in modal or non-modal mode
if (this.Parent is PropertiesDialog)
{
pd = new PropertiesDialog((this.Parent as PropertiesDialog).Text + " Interfaces");
}
else
{
pd = new PropertiesDialog((this.Parent.Parent as DSFilterNodeUI).CaptionText + " Interfaces");
}
pd.TextBox.AppendText("Filter Interfaces:\r\n");
// create the array of assemblie we want to scan interfaces against
Assembly[] assemblies = new Assembly[2] {
typeof(IBaseFilter).Assembly, typeof(IMFGetService).Assembly
};
// scan the filter's interfaces
List <InterfacePair> pairs = InterfaceScanner.Scan(assemblies, _filter);
foreach (InterfacePair p in pairs)
{
pd.TextBox.AppendText(p.InterfaceGuid.ToString() + "\t" + p.InterfaceName + "\r\n");
}
// scan the pin interfaces
foreach (Control c in this.TabControl.Controls)
{
if (c.Tag is IPin)
{
pd.TextBox.AppendText("\r\n" + c.Text + " Pin Interfaces:\r\n");
List <InterfacePair> pinpairs = InterfaceScanner.Scan(assemblies, c.Tag);
foreach (InterfacePair p in pinpairs)
{
pd.TextBox.AppendText(p.InterfaceGuid.ToString() + "\t" + p.InterfaceName + "\r\n");
}
}
}
Cursor = Cursors.Default;
pd.ShowDialog(this.TopLevelControl);
}
/// <summary>
/// Performs a brute force scan of all interfaces the COM object implements
/// </summary>
/// <param name="assembly">optional Assembly to scan against</param>
/// <param name="o">Object to scan</param>
/// <returns>List of Pairs of Interface Name/Interface GUID</returns>
public static List <InterfacePair> Scan(Assembly[] assemblies, object o)
{
if (instance == null)
{
instance = new InterfaceScanner();
}
Dictionary <string, Guid> hash = new Dictionary <string, Guid>();
List <InterfacePair> pairs = new List <InterfacePair>();
IntPtr ukn = Marshal.GetIUnknownForObject(o);
foreach (InterfacePair ip in instance._pairs)
{
IntPtr iptr = IntPtr.Zero;
Marshal.QueryInterface(ukn, ref ip.InterfaceGuid, out iptr);
if (iptr != IntPtr.Zero)
{
hash.Add(ip.InterfaceName, ip.InterfaceGuid);
Marshal.Release(iptr);
}
}
// scan against the array assembly if one was given
if (assemblies != null)
{
for (int x = 0; x < assemblies.Length; x++)
{
Type[] asstypes = assemblies[x].GetTypes();
for (int i = 0; i < asstypes.Length; i++)
{
if (asstypes[i].IsInterface)
{
IntPtr iptr = IntPtr.Zero;
Guid g = asstypes[i].GUID;
Marshal.QueryInterface(ukn, ref g, out iptr);
if (iptr != IntPtr.Zero)
{
if (!hash.ContainsKey(asstypes[i].Name))
{
hash.Add(asstypes[i].Name, asstypes[i].GUID);
}
Marshal.Release(iptr);
}
}
}
}
}
Marshal.Release(ukn);
// if it's a managed type, get all of it's interfaces also
if (!o.GetType().IsCOMObject)
{
Type[] t = o.GetType().GetInterfaces();
for (int i = 0; i < t.Length; i++)
{
if (!hash.ContainsKey(t[i].Name))
{
hash.Add(t[i].Name, t[i].GUID);
}
}
}
// flatten the dictionary into a list
foreach (KeyValuePair <string, Guid> kvp in hash)
{
InterfacePair ip = new InterfacePair();
ip.InterfaceName = kvp.Key;
ip.InterfaceGuid = kvp.Value;
pairs.Add(ip);
}
return(pairs);
}
