在C ++中拖放文件时获取文件图标（位图）

Question

当我将单个文件从应用程序拖放到资源管理器时，将显示单个文件的图像。但是我想拖动多个文件并显示多个文件图像。有人可以帮忙吗？

Dragging a shell object, part 4: Adding a prettier drag icon

HRESULT GetDataObjectOfFileWithCuteIcon(HWND hwnd,LPCWSTR pszPath, IDataObject** ppdto)
{
    HRESULT hr; /*= GetUIObjectOfFile(hwnd, pszPath,

        IID_IDataObject, (void**)ppdto);*/

    //if (SUCCEEDED(hr)) 
    {

        IDragSourceHelper* pdsh;

        if (SUCCEEDED(CoCreateInstance(CLSID_DragDropHelper, NULL, CLSCTX_ALL,IID_IDragSourceHelper, (void**)& pdsh))) {
            HIMAGELIST himl;
            SHDRAGIMAGE sdi;
            SIZE sz;
            ZeroMemory(&sdi, sizeof(SHDRAGIMAGE));

            sdi.crColorKey = CLR_NONE;
            SHFILEINFOW sfi = { };
            int UFlag = SHGFI_ICON | SHGFI_SMALLICON;
            UFlag  ^= SHGFI_SMALLICON;
            //himl  = (HIMAGELIST)              SHGetFileInfoW(L"C:\\Users\\Venkatesh\\Desktop", 0, &sfi, sizeof(sfi), UFlag| SHGFI_SYSICONINDEX);
            himl  = (HIMAGELIST)                SHGetFileInfoW(L"C:\\Users\\Venkatesh\\Desktop\\TestPage.pdf", 0, &sfi, sizeof(sfi), UFlag| SHGFI_SYSICONINDEX);
            if (himl)
            {
                int cx, cy;              

                ImageList_GetIconSize(himl, &cx, &cy);

                sdi.sizeDragImage.cx = cx;

                sdi.sizeDragImage.cy = cy;
                sdi.ptOffset.x = cx;

                sdi.ptOffset.y = cy;

                sdi.crColorKey = CLR_NONE;

                sdi.hbmpDragImage = CreateBitmap(cx, cy, 1, 32, NULL);
                HDC hdc = CreateCompatibleDC(NULL);
                if (sdi.hbmpDragImage) {
                //  GetObject(sdi.hbmpDragImage, sizeof(BITMAP), &sdi.hbmpDragImage);
                    HBITMAP hbmPrev = (HBITMAP)SelectObject(hdc, (HGDIOBJ)sdi.hbmpDragImage);
                    ImageList_Draw(himl, sfi.iIcon, hdc, 0, 0, ILD_SCALE);
                //  ImageList_Draw(himl, sfi.iIcon, hdc, 0, 0, ILD_TRANSPARENT);
                    SelectObject(hdc, hbmPrev);
                    //if (CreateDragImage(pszPath, &sdi)) {

                    pdsh->InitializeFromBitmap(&sdi, *ppdto);
                    DeleteDC(hdc);


                    DeleteObject(sdi.hbmpDragImage);
                }
                //}


            }
        }
        pdsh->Release();
    }
    hr = S_OK;
    return hr;

}