Function uiOpenFolder 

pub unsafe extern "C" fn uiOpenFolder(
    parent: *mut uiWindow,
) -> *mut c_char

Folder chooser dialog window to select a single folder.

@param parent Parent window. @returns Folder path, NULL on cancel.\n If path is not NULL:\n TODO: clarify string encoding. Caller is responsible for freeing the data with uiFreeText(). @note File paths are separated by the underlying OS file path separator. @ingroup dataEntry dialogWindow