Create a combo box
- Last UpdatedMay 12, 2025
- 2 minute read
You can create applications that enable your users to select items from lists of options with a combo box. A combo box is a Windows control combining a text box and a list box.
When adding a combo box to your application, place the control on the screen, set the properties to configure the combo box, and then write any scripts you may need.
Combo boxes can be loaded with items from a file or from keyboard input during run time. For more information, see Script windows controls.
Create a combo box
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Create and place the combo box control. Do the following:
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In the Wizard Selection dialog box, select Windows Controls.
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Double-click the combo box icon. Your application window reappears and the cursor changes to a left corner symbol.
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Select a location in the application window to place the control. The combo box control appears.

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Double-click the control. The ComboBox Control dialog box appears.

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Configure the control. Do the following:
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Type a control name, such as ComboBox_1, in the ControlName box.
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Type a memory message tag name, such as CB1_Value, in the Tagname box.
Where, CB1_Value may be Memory tag or IO tag or Remote tag, which in turn can connect to a PLC. For information on how to configure an I/O tag to connect to a PLC see Configure I/O tag properties.
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In the Properties area, configure how the control appears and functions.
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In the Style area, select the type of combo box.
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Select OK.