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  • Overview of the Combo Box control
  • Control in a window, control in a dynamic or static page
  • Creating a Combo Box control
  • To create a Combo Box control:
  • Characteristics of the Combo Box control
  • Size of the expanded area
  • Vocabulary
  • Swap
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Overview of the Combo Box control

Control in a window, control in a dynamic or static page

The "Combo Box" control is used to display a list of elements and to select an element from this list.
Unlike a List Box, a Combo Box control is not expanded: the control is expanded on a user action or when the cursor is positioned on the list.
Versions 16 and later
Linux Combo Box controls are now available for WINDEV applications in Linux.
New in version 16
Linux Combo Box controls are now available for WINDEV applications in Linux.
Linux Combo Box controls are now available for WINDEV applications in Linux.
The elements displayed in a Combo Box control can be defined when creating the control in the editor. These elements:
  • are defined by programming.
  • come from a data file or query.
Creating a Combo Box control

To create a Combo Box control:

  1. On the "Creation" pane, in the "Usual controls" group, click "Combo Box".
  2. Click the position where the control must be created in the page or window. The Combo Box control creation wizard starts automatically.
To view the control characteristics, select "Description" in the popup menu of the control.
Characteristics of the Combo Box control
WEBDEV - Server code

Size of the expanded area

The size of the expanded area varies according to the browser used. If there are more elements in the Combo Box than those that can be displayed in the list, the scrolling is automatically managed: the expanded area has a vertical scrollbar.
Vocabulary
To easily handle a Combo Box control, you must be familiar with the following vocabulary:
Name Definition
Selection barAllows you to view the selected element in the expanded area. A specific color is used in most cases.
Browsing combo boxThe Combo box control is based on a data file or query. The control elements correspond to the file records.
Two types of browsing Combo box controls are available:
  • Browsing Combo Box control "Loaded in memory": The content of the control is loaded in memory then it is displayed in the control. Access to the elements of the Combo Box control is faster. This mode is reserved for data files with less than 100,000 records.
  • Browsing Combo Box control "Direct access (no limit)": The control displays the content of the data file or query. The current record corresponds to the selected element. Selecting an element in the control triggers an access to the linked data file. This type of control is reserved for data files with more than 100,000 records.
Memory Combo BoxThe Combo Box control is not based on a data file or query. The elements displayed in the Combo Box control are defined by the developer (in the description window or by programming).
Editable Combo BoxThe user can enter text in the edit control associated with the Combo Box. If "Assisted input" is selected, the user can easily select the element by typing the first letters: the letters typed are automatically completed with the corresponding element.
Non-editable Combo BoxThe user selects an element in the expanded area via the selection bar.
WEBDEV - Server code Remark: "Editable Combo Box" and "Non-editable Combo Box" are not available in WEBDEV.
Swap
Related Examples:
The Combo Box control Unit examples (WINDEV): The Combo Box control
[ + ] Using a Combo Box control
WD Managing a computer fleet Complete examples (WINDEV): WD Managing a computer fleet
[ + ] This example presents the management of a computer fleet with WINDEV.
The following topics are presented in this example:
1/ the printed reports,
2/ the graphic representation of the location of the computer,
3/ the automatically filled combo boxes.
Summary of the example supplied with WINDEV:
This example is used to manage a computer fleet.
For each computer, you will be able to define its characteristics, its components, the person who is using it as well as its location in the offices.
The EyeMagnet Unit examples (WINDEV): The EyeMagnet
[ + ] Using the "eYe magnet" mechanism (also called conditional formatting)
The "eYe magnet" consists in modifying the visual aspect of a control in order to attract the user's attention to this control. WINDEV allows you to automatically modify this visual aspect according to a set of conditions.
Minimum version required
  • Version 9
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