Dropdown list of choices for items in CTreeCtrl and CListCtrl

Environment: VC6

Derived classes from CTreeCtrl and CListCtrl with dropdown list of choices for items text (combo box)

Derived classes from CListCtrl and CTreeCtrl allows user to open a list of choices for item's text. Double click or F4 keyboard button on item opens pre created list of strings. Useful when it's necessary to create a visual editable protocol trees and lists of fields (values must be one of the values from dropdown list, or may be entered by user).

It's very simple to use. Just follow steps below.

1. Create a new control by VC6 resource editor and specify a variable of CTreeCtrlEx (CListCtrlEx) type for that control or use Create() functions for dynamic creation of that controls.

2. Use InsertItemWithComboBox() function to insert a new item into control.

3. Use InsertComboBoxString() function to insert a new entry for item's combo box. Item must already created by InsertItemWithComboBox() function.

4. Use SetComboDroppedHeight() function to specify height for dropdown combo box. Can be used at runtime. (No multithreading support and will not effect on any already visible combo boxes).

5. Use SetComboMinMaxWidths() function to specify minimum and maximum widths for all combo boxes in control. Can be used at runtime. (No multithreading support and will not effect on any already visible combo boxes).

Here is the partial interface for CListCtrlEx class (interface for CTreeCtrlEx is almost the same):

class EXCTRLSDDLEXP CListCtrlEx : public CListCtrl
{
	typedef CMap< int, int, CWnd*, CWnd* > mapItemToCB;
. . .
. . .
. . .
public:
  void  SetComboDroppedHeight( int iNewHeight );
  void  SetComboMinMaxWidths( UINT iNewMinWidth = 150, 
                              UINT iNewMaxWidth = UINT_MAX );
  int   InsertItemWithComboBox( LPCTSTR lpszItem, 
                                BOOL bEditableCombo );
  void  RemoveComboBox( int nItemRemoveFrom );
  void  RemoveAllComboBoxes();
  int   InsertComboBoxString( int nItemInsertTo, 
                              LPCTSTR lpszItem, 
                              int iIndex = -1 );
  BOOL  DeleteItem( int nItem );
  BOOL  DeleteAllItems();

. . .
. . .
. . .

};

Downloads

Download sources and demo project - 18,664 bytes


Comments

  • dropdownlist

    Posted by Legacy on 06/05/2003 12:00am

    Originally posted by: Rajesh kumar Prajapati

    that is realy best thing,can u give some time for my problem for parsing text file and display the related data in the dropdown when we type the message in richtext box.
    

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

Top White Papers and Webcasts

  • New IT trends to support worker mobility -- such as VDI and BYOD -- are quickly gaining interest and adoption. But just as with any new trend, there are concerns and pitfalls to avoid. Download this paper to learn the most important considerations to keep in mind for your VDI project.

  • 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.

Most Popular Programming Stories

More for Developers

RSS Feeds

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