Learn Visual Basic 6.0

3. Exploring the Visual Basic Toolbox

Combo Boxes

1. The combo box is similar to the list box. The differences are a combo box includes a text box on top of a list box and only allows selection of one item. In some cases, the user can type in an alternate response.
   
   
2. Combo Box Properties:
   
   Combo box properties are nearly identical to those of the list box, with the deletion of the MultiSelect property and the addition of a Style property.
   
   

   Appearance	Selects 3-D or flat appearance.
   List	Array of items in list box portion.
   ListCount	Number of items in list.
   ListIndex	The number of the most recently selected item in list. If no item is selected, ListIndex = -1.
   Sorted	True means items are sorted in 'Ascii' order, else items appear in order added.
   Style	Selects the combo box form. Style = 0, Dropdown combo; user can change selection. Style = 1, Simple combo; user can change selection. Style = 2, Dropdown combo; user cannot change selection.
   Text	Text of most recently selected item.

   
   
3. Combo Box Events:
   
   

   Click	Event triggered when item in list is clicked.
   DblClick	Event triggered when item in list is double-clicked. Primary way used to process selection.

   
   
4. Combo Box Methods:
   
   

   AddItem	Allows you to insert item in list.
   Clear	Removes all items from list box.
   RemoveItem	Removes item from list box, as identified by index of item to remove.

   
   Examples
   
   cboExample.AddItem "This is an added item" ' adds text string to list
   cboExample.Clear ' clears the combo box
   cboExample.RemoveItem 4 ' removes cboExample.List(4) from list box
   
   
5. You've seen combo boxes before. In the standard 'Open File' window, the File Name box is a combo box of Style 2, while the Drive box is a combo box of Style 3.

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