public bool DisplayFilterPropPage(IntPtr hParent, string strFilter, bool bDisplay)
{
if (_graphBuilder == null)
{
return(false);
}
IBaseFilter pFilter;
_graphBuilder.FindFilterByName(strFilter, out pFilter);
if (pFilter == null)
{
return(false);
}
var bRet = false;
var pProp = pFilter as ISpecifyPropertyPages;
if (pProp != null)
{
CAUUID caGuid;
var hr = pProp.GetPages(out caGuid);
if (DsHlp.SUCCEEDED(hr) && caGuid.cElems > 0)
{
bRet = true;
if (bDisplay)
{
// Show the page
object pFilterUnk = pFilter;
DsUtils.OleCreatePropertyFrame(
hParent, // Parent window
0, 0, // Reserved
strFilter, // Caption for the dialog box
1, // Number of objects (just the filter)
ref pFilterUnk, // Array of object pointers.
caGuid.cElems, // Number of property pages
caGuid.pElems, // Array of property page CLSIDs
0, // Locale identifier
0, IntPtr.Zero // Reserved
);
}
}
// Clean up
if (caGuid.pElems != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(caGuid.pElems);
}
}
Marshal.ReleaseComObject(pFilter);
return(bRet);
}
