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.
    ON_MESSAGE(WM_SELECTITEM_CHANGE, OnSelectItemChange)
    
    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:
    m_comboBoxFolder.GetSelectedPath()
    
I haven't added too much here insofar as explanation of code because the code is included and very easy to understand.


Downloads

Comments

  • 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  • Your email address will not be published.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

  • Are you truly leading your team or simply managing them? Organizations need leaders and your team needs someone to follow. With some ongoing development, you could become that leader. Learn the top leadership qualities that inspire others to want to follow you and the direction of your company.

  • On-demand Event Event Date: March 19, 2015 The 2015 Enterprise Mobile Application Survey asked 250 mobility professionals what their biggest mobile challenges are, how many employees they are equipping with mobile apps, and their methods for driving value with mobility. Join Dan Woods, Editor and CTO of CITO Research, and Alan Murray, SVP of Products at Apperian, as they break down the results of this survey and discuss how enterprises are using mobile application management and private app stores to …

Most Popular Programming Stories

More for Developers

RSS Feeds

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