C++ (Cpp) ComPtr::SetFileTypes Examples

Example #1

File: assertiondialog.cpp Project: smacdo/Hailstorm

/**
 * This method handles the actual details of saving an assertion report. It will
 * bring up the "File save as..." dialog and then write the report out to
 * whichever file the user selects
 *
 * \return  True if the user saved the file, false if they aborted the action
 */
bool AssertionDialog::SaveCrashDump() const
{
    bool didSaveFile = false;

    // Create the file save as dialog
    Microsoft::WRL::ComPtr<IFileDialog> fileDialog;
    HRESULT hr = CoCreateInstance(CLSID_FileSaveDialog, nullptr, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&fileDialog));

    if (!SUCCEEDED(hr))
    {
        return false;
    }

    // File types supported
    COMDLG_FILTERSPEC filters[] = { { L"Text Files", L"*.txt" } };

    // Configure the save dialog with useful defaults
    fileDialog->SetTitle(L"Save crash dump to a file");
    fileDialog->SetFileTypes(ARRAYSIZE(filters), filters);
    fileDialog->SetDefaultExtension(L"*.txt");
    fileDialog->SetFileName(L"crash details.txt");

    // Show the file save as dialog
    fileDialog->Show(mWindowHandle);

    // Find the name of the file they want to save the assertion report to.
    // If the user didn't give an appropriate response, simply leave the filename
    // to be null
    Microsoft::WRL::ComPtr<IShellItem> dialogResult;
    PWSTR filepath = nullptr;

    hr = fileDialog->GetResult(&dialogResult);

    if (SUCCEEDED(hr))
    {
        HRESULT hr = dialogResult->GetDisplayName(SIGDN_FILESYSPATH, &filepath);

        if (SUCCEEDED(hr))
        {
            std::string fileContents = Utils::ConvertWideStringToUtf8(GetFileReportString());

            // First we have to create the file
            HANDLE fileHandle = CreateFile(
                filepath,
                GENERIC_WRITE,
                0,
                nullptr,
                CREATE_ALWAYS,
                FILE_ATTRIBUTE_NORMAL,
                nullptr);

            // Convert the text file to UTF8 and then write the string to disk.
            WriteFile(
                fileHandle,
                fileContents.c_str(),
                static_cast<DWORD>(fileContents.size()),
                nullptr,
                nullptr);

            // Remember that we wrote the file out
            didSaveFile = true;
        }
    }

    // Now clean up. Release the dialog window and close the file stream.
    CoTaskMemFree(filepath);
    return didSaveFile;
}