4D v13.4
Combo Boxes
- 4D Design Reference
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- Working with active objects
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- What are active objects?
- Field and variable objects
- Buttons
- 3D Buttons, 3D Check Boxes and 3D Radio Buttons
- Picture Buttons
- Button Grids
- Check Boxes
- Radio Buttons and Picture Radio Buttons
- Pop-up Menus/Drop-down Lists
- Combo Boxes
- Hierarchical Pop-up Menus and Hierarchical Lists
- Picture Pop-up Menus
- Indicators
- Tab Controls
- Splitters
- Web areas
- Plug-in areas
Combo Boxes
A combo box is similar to a drop-down list, except that the object accepts text entered from the keyboard. You initialize a combo box in exactly the same way as a drop-down list (see Pop-up Menus/Drop-down Lists).
If the user enters text into the combo box, it fills the 0th element of the array. In other respects, you treat a combo box as an enterable area that uses its array as a set of default values.
Use the On Data Change event to manage entries into the enterable area, as you would for any enterable area object. For more information, refer to the description of the Form event command in the 4D Language Reference manual.
Product: 4D
Theme: Working with active objects
