Load icon from .DLL in wxWidgets

Question

I am attempting to load a wxIcon in Windows by loading from a system DLL (as the mime system told me that the icon for such a file type was in the DLL), eg.

wxIcon icon;
icon.LoadFile("C:\\WINDOWS\\system32\\zipfldr.dll", wxICON_DEFAULT_TYPE);

This fails but I was wondering if there was any way in the codebase of loading this, other than resorting to native Win32 functions.

Also, if there are native Win32 functions, does anyone know what they are?

EDIT: I have tried the following with no success:

::wxInitAllImageHandlers();
wxMimeTypesManager manager;
wxFileType* type = manager.GetFileTypeFromExtension("sys");
wxIconLocation location;
if (type->GetIcon(&location))
{
  // location is something like C:\WINDOWS\system32\imageres.dll
  wxIcon icon;
  if (!icon.LoadFile(location.GetFileName(), wxBITMAP_TYPE_ICON /*I have tried wxICON_DEFAULT_TYPE too*/))
  {
    // Failed!
  }
}

EDIT 2: In response to VZ, I have tried the following with no success sadly:

::wxInitAllImageHandlers();
wxMimeTypesManager manager;
wxFileType* type = manager.GetFileTypeFromExtension("sys");
wxIconLocation location;
if (type->GetIcon(&location))
{
  // location is something like C:\WINDOWS\system32\imageres.dll,
  //with an appropriate index as retrieved by location.GetIndex(), which is -67.
  wxIcon icon(location);
  if (!icon.IsOk())
  {
    BREAK;
    // Failed!
  }
}

EDIT 3: Thanks for everyone's help - works fine if I use wxBITMAP_TYPE_ICO instead of wxBITMAP_TYPE_ICON (notice the N), and also I was putting my test code in my app's constructor instead of in ::OnInit. It worked in OnInit but not in the constructor so that's a lesson learned! Thanks everyone for the help and speedy responses, much appreciated as always.

Answer 1

It should work if you specify type wxBITMAP_TYPE_ICO.