C＃：如何使用directshow.net來顯示這個對話框？

Question

如何使用Directshow.net調用此對話框？

Filter graph

Answer 1

像這樣的工作，假設你有一個IBaseFilter參考：

[DllImport("oleaut32.dll", CharSet = CharSet.Auto)] 
    internal static extern int OleCreatePropertyFrame(
     IntPtr hwndOwner, 
     uint x, uint y, 
     [MarshalAs(UnmanagedType.LPWStr)] 
     string caption, 
     uint objectCount, 
     [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.IUnknown)] 
     object[] lplpUnk, 
     int cPages, 
     IntPtr pageClsID, 
     Guid lcid, 
     uint dwReserved, 
     IntPtr lpvReserved); 

    public void DisplayPropertyPages(Form form, IBaseFilter filter) 
    { 
      var propertyPages = filter as ISpecifyPropertyPages; 
      DsCAUUID pages; 
      FilterInfo info; 
      int hr = filter.QueryFilterInfo(out info); 
      DsError.ThrowExceptionForHR(hr); 
      if (propertyPages == null) 
      { 
       throw new ApplicationException("IBaseFilter doesn't implement ISpecifyPropertyPages"); 
      } 
      hr = propertyPages.GetPages(out pages); 
      DsError.ThrowExceptionForHR(hr); 
      var filters = new IBaseFilter[1]; 
      filters[0] = filter; 
      hr = OleCreatePropertyFrame(form.Handle, 0, 0, info.achName, 1, filters, 
       pages.cElems, pages.pElems, Guid.Empty, 0, IntPtr.Zero); 
      Marshal.FreeCoTaskMem(pages.pElems); 
      DsError.ThrowExceptionForHR(hr); 
    } 

Answer 2

請在MSDN檢查OleCreatePropertyFrame的說明（）。

Guid lcid無效。結果： 託管調試助手'PInvokeStackImbalance'在'D：\ CVS \ Dev \ Filters \ H264 \ H264mfxEncoder \ Samples \ C＃\ H264EncoderTest \ bin \ Debug \ H264EncoderTest.vshost.exe'中檢測到問題。 附加信息：對PInvoke函數'H264EncoderTest！H264EncoderTest.CGraph :: OleCreatePropertyFrame'的調用使堆棧不平衡。這很可能是因爲託管的PInvoke簽名與非託管目標籤名不匹配。檢查PInvoke簽名的調用約定和參數是否與目標非託管簽名相匹配。

必須是：uint lcid 和hr = OleCreatePropertyFrame（form.Handle，0，0，info.achName，1，filters，pages.cElems，pages.pElems，0，0，IntPtr.Zero）;