private IntPtr CreatePropertySheetPage()
{
if (hPropertySheetPage == IntPtr.Zero)
{
_psp = new PROPSHEETPAGE();
_psp.hInstance = IntPtr.Zero;
_psp.dwSize = Marshal.SizeOf(_psp);
_psp.dwFlags = pspFlags.PSP_USECALLBACK | pspFlags.PSP_USETITLE | pspFlags.PSP_DLGINDIRECT;
_psp.lParam = IntPtr.Zero;
if (RightToLeft == RightToLeft.Yes)
{
_psp.dwFlags |= pspFlags.PSP_RTLREADING;
}
if (_icon != null)
{
_psp.dwFlags |= pspFlags.PSP_USEHICON;
_psp.hIcon = _icon.GetHicon();
}
if (_showHelpButton)
{
_psp.dwFlags |= pspFlags.PSP_HASHELP;
}
_psp.pResource = GetDlgTemplate();
_psp.pfnDlgProc = new DialogProc(WndProc);
_psp.pfnCallback = new PropSheetPageProc(PropSheetPageCallback);
_psp.pszTitle = Text;
hPropertySheetPage = Comctl32.CreatePropertySheetPage(ref _psp);
if (hPropertySheetPage != IntPtr.Zero)
{
_extensionReferences.Add(this);
}
}
return(hPropertySheetPage);
}
int IShellPropSheetExt.AddPages(IntPtr lpfnAddPage, IntPtr x130fbcecf32fe781)
{
try
{
CreatePropertySheetPage();
if (hPropertySheetPage.Equals(0))
{
_extensionReferences.Remove(this);
return(1);
}
var func = CFunctionPointer.Create(lpfnAddPage, typeof(bool), typeof(IntPtr), typeof(IntPtr));
if ((bool)func.Invoke(new object[] { hPropertySheetPage, x130fbcecf32fe781 }))
{
return(0);
}
_extensionReferences.Remove(this);
Comctl32.DestroyPropertySheetPage(hPropertySheetPage);
return(1);
}
catch (Exception exception)
{
MessageBox.Show(exception.ToString());
return(1);
}
}
