Controls That Present Choices to Users
Most applications need to present choices to their users, ranging from a simple yes/no option to selecting from a list containing hundreds of possibilities. Visual PL/B includes several standard controls that are useful for presenting choices. The following table summarizes these controls and their appropriate uses.
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To provide this feature |
Use this control |
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A small set of choices from which a user can choose one or more options. |
CHECKBOXes |
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A small set of options from which a user can choose just one. |
RADIO buttons (use GROUPBOX if additional groups are needed) |
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A scrollable list of choices from which the user can choose. |
DATALIST |
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A scrollable list of choices along with a text edit field. The user can either choose from the list or type a choice in the edit field. |
COMBOBOX |
CHECKBOXes, RADIO buttons, DATALISTs, and COMBOBOXes are discussed in the following sections:
Selecting Individual Options with CHECKBOXes - The basics of using the CHECKBOX control.
Grouping Options with RADIO Buttons - The basics of using the RADIO button control.
Using DATALISTs and COMBOBOXes - An introduction to the DATALIST and COMBOBOX controls.
Using Scrollbars as Input Devices - A brief introduction to the scroll bar controls.
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