ComboBox with Tree Dropdown

Environment:VC6, Win200, ME (has not test on other OS)

Using the Class

  1. Just as you normally would, place a ComboBox on the dialog. And name it m_comboBoxFolder.
  2. Add the files ComboBoxFolder.cpp, ComboBoxFolder.h, TreeCtrlFolder.cpp, TreeCtrlFolder.h, Folder.cpp and Folder.h to your project.
  3. Import the bitmap files folder0.bmp and give them resource Ids of "IDB_FOLDER".
  4. In the header file for the dialog, add an include for ComboBoxFolder.h at the top. Manually change variable from CComboBox m_comboBoxFolder; in step 1 to CComboBoxFolder m_comboBoxFolder;
  5. In the dialog's OnInitDialog() function, call m_comboBoxFolder.Init(0, 300) for setting dropped width and height of a tree dropdown.
  • To add path to tree-dropped-down call:
  • m_comboBoxFolder.AddPath("C:\\Windows\\temp");
  • Whenever a user selects an item in the tree-dropped-down, a message, WM_SELECTITEM_CHANGE, will be sent to Dialog: A small demo below shows how to catch the message and get parameter has been passed.
    long CTestDlg::OnSelectItemChange(WPARAM w, LPARAM l)
    { CString path = "";
     CFolder* folder = (CFolder*) w;
     if (folder != NULL)
       path = folder->m_path;
     return 0;
  • To get path selected in the tree-dropped-down call:
I haven't added too much here insofar as explanation of code because the code is included and very easy to understand.



  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Moving from an on-premises environment to Office 365 does not remove the need to plan for disruptions or reduce the business risk requirements for protecting email services. If anything, some risks increase with a move to the cloud. Read how to ease the transition every business faces if considering or already migrating to cloud email. This white paper discusses: Setting expectations when migrating to Office 365 Understanding the implications of relying solely on Exchange Online security Necessary archiving …

  • Enterprises are increasingly looking to platform as a service (PaaS) to lower their costs and speed their time to market for new applications. Developing, deploying, and managing applications in the cloud eliminates the time and expense of managing a physical infrastructure to support them. PaaS offerings must deliver additional long-term benefits, such as a lower total cost of ownership (TCO), rapid scalability, and ease of integration, all while providing robust security and availability. This report …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date