Function SelectFileOrFolder

Src/FileOrFolderSelect.cpp:208–274

* @brief Shows file/folder selection dialog. * * We need this custom function so we can select files and folders with the * same dialog. * - If existing filename is selected return it * - If filename in (CFileDialog) editbox and current folder doesn't form * a valid path to file, return current folder. * @param [in] parent Handle to parent window. Can be `nullptr`, but then * CMainFram

 * @return `true` if user choosed a file/folder, `false` if user canceled dialog.
 */
bool SelectFileOrFolder(HWND parent, String& path, const tchar_t* initialPath /*= nullptr*/)
{
	String title = _("Open");

	// This will tell common file dialog what to show
	// and also this will hold its return value
	tchar_t sSelectedFile[MAX_PATH_FULL];
	String sInitialDir;

	// check if specified path is a file
	if (initialPath!=nullptr && initialPath[0] != '\0')
	{
		// If initial path info includes a file
		// we put the bare filename into sSelectedFile
		// so the common file dialog will start up with that file selected
		if (paths::DoesPathExist(initialPath) == paths::IS_EXISTING_DIR)
		{
			sInitialDir = initialPath;
		}
		else
		{
			String temp;
			paths::SplitFilename(initialPath, &sInitialDir, &temp, 0);
			lstrcpy(sSelectedFile, temp.c_str());
		}
	}

	String filters = _("All Files (*.*)|*.*||");

	// Convert extension mask from MFC style separators ('|')
	//  to Win32 style separators ('\0')
	tchar_t* filtersStr = &*filters.begin();
	ConvertFilter(filtersStr);

	String dirSelTag = _("Folder Selection");

	// Set initial filename to folder selection tag
	dirSelTag += _T("."); // Treat it as filename
	lstrcpy(sSelectedFile, dirSelTag.c_str()); // What is assignment above good for?

	OPENFILENAME_NT4 ofn = { sizeof OPENFILENAME_NT4 };
	ofn.hwndOwner = parent;
	ofn.lpstrFilter = filtersStr;
	ofn.lpstrCustomFilter = nullptr;
	ofn.nFilterIndex = 1;
	ofn.lpstrFile = sSelectedFile;
	ofn.nMaxFile = MAX_PATH_FULL;
	ofn.lpstrInitialDir = sInitialDir.empty() ? nullptr : sInitialDir.c_str();
	ofn.lpstrTitle = title.c_str();
	ofn.lpstrFileTitle = nullptr;
	ofn.Flags = OFN_HIDEREADONLY | OFN_PATHMUSTEXIST | OFN_NOTESTFILECREATE | OFN_NOCHANGEDIR;

	bool bRetVal = !!GetOpenFileName((OPENFILENAME *)&ofn);

	if (bRetVal)
	{
		path = sSelectedFile;
		if (paths::DoesPathExist(path) == paths::DOES_NOT_EXIST)