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SIZE_T GetSaveDialog(HINSTANCE    hInstance, HWND hWnd, LPCWSTR lpTitle, LPWSTR lpFileName, DWORD    dwFNSize, 
                     LPCWSTR lpDefExt, LPCWSTR lpInitialDir)
{
    IFileSaveDialog *pFSD;
    SIZE_T szResultSize = 0;
 
    HRESULT hResult = CoCreateInstance(__uuidof(FileSaveDialog), NULL, CLSCTX_INPROC_SERVER, __uuidof(IFileSaveDialog),
        (LPVOID*)&pFSD);
 
    if(SUCCEEDED(hResult))
    {
        pFSD->SetOptions(FOS_OVERWRITEPROMPT);
        pFSD->SetTitle(lpTitle);
        if(wcslen(lpFileName)) pFSD->SetFileName(lpFileName);        
 
        pFSD->SetDefaultExtension(lpDefExt);
 
        if(lpInitialDir)
        {
            IShellItem *pInitDir;
            SHCreateItemFromParsingName(lpInitialDir, NULL, __uuidof(IShellItem), (LPVOID *)&pInitDir);            
            pFSD->SetFolder(pInitDir);
        }
 
        if(SUCCEEDED(pFSD->Show(hWnd)))
        { 
            IShellItem *pResult;
            LPWSTR lpResult;
 
            pFSD->GetResult(&pResult);
            pResult->GetDisplayName(SIGDN_FILESYSPATH, &lpResult);
            wcsncpy(lpFileName, lpResult, dwFNSize); 
 
            CoTaskMemFree(lpResult);          
 
            szResultSize = wcslen(lpFileName);
        }
 
        if(pFSD) pFSD->Release();
    }
 
    return szResultSize;
}