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  • Overview
  • Initializing the choice of a Radio Button control
  • Displaying a Radio Button control with no default option
  • Retrieving the option selected in a Radio Button control
  • Case of a Radio Button control that returns an integer
  • Pre-filled SWITCH on the Radio Button controls
  • Modifying the caption of a Radio Button control
  • Changing the colors of captions for the options in a Radio Button control
  • Properties specific to Radio Button controls
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Stored procedures
Overview
WINDEV, WEBDEV and WINDEV Mobile allow you to programmatically handle Radio Button controls. To do so, use the variable of Radio Button control in the code.
Regardless of the type of radio button, each option can be associated with:
  • an integer. This integer can take a value from 1 to N, N being the total number of options found in the radio button. The first option is the option #1, the second option is the option #2, ... The options are numbered from top to bottom and from left to right.
Initializing the choice of a Radio Button control
By default, the first option is selected when a Radio Button control is displayed.
To check an option of a Radio Button control:
  • if the Radio Button control returns an integer, use the following syntax:
    <Radio Button control> = <Option index>
  • if the Radio Button control returns a specific value (in WINDEV or WINDEV Mobile only), use the following syntax:
    <Radio Button control> = <Option value>
The selection of an option unchecks the option that is currently selected.
Remark: If the control is associated with a data file item, the assignment is automatically performed via:
For more details, see Binding a Radio Button control to an item.
WEBDEV - Server code

Displaying a Radio Button control with no default option

A Radio Button control is always positioned on a position (1 by default).
To display a Radio Button control with no default option, all you have to do is assign the initial control value to:
  • -1 for a Radio Button control that returns an integer,
  • "" (empty string) for a Radio Button control that returns a value.
Remark: A Radio Button control with no default value cannot be accessed by TAB.
Example:
// Display the Radio Button control without initial value
RADIO_MyRadioButton = -1
// or RADIO_MyRadioButton = ""
Retrieving the option selected in a Radio Button control

Case of a Radio Button control that returns an integer

To get the index of the selected option in the Radio Button control, use the following syntax:
<Option index> = <Radio Button control>

In this case, <Option index> is an integer that corresponds to the number of the selected option.
To find out the caption of the option selected in the Radio Button control, use the following syntax:
<Option caption> = <Radio Button control>[Radio Button control].Caption

Remark: If the control is associated with an item found in a data file, the value typed is automatically retrieved by using:
For more details, see Linking a Radio Button control to an item.

Pre-filled SWITCH on the Radio Button controls

When typing the SWITCH statement relative to a Radio Button control, the code editor automatically adds the CASE corresponding to the different options of the Radio Button control. The caption of each option is automatically added in line comment.
For example:
  • Code for a Radio Button control that returns an integer: typing "SWITCH RADIO_Title" in the code editor displays:
    Code for a Radio Button control that returns an integer
  • Code for a Radio Button control that returns a value: typing "SWITCH RADIO_TodaysMenu" in the code editor displays:
    Code for a Radio Button control that returns a value
Modifying the caption of a Radio Button control
The Caption property allows you to:
  • change the caption of Radio Button control:
    <Name of Radio Button control>.Caption = <Caption>
  • change the caption of all options found in the Radio Button control:
    The options must be separated by the TAB character.
    You can specify the first options only.
    <Radio Button control>.Caption = <Option 1>+TAB+<Option 2>+TAB+<Option 3> ...
  • retrieve and modify the caption of an option:
    // Get the sub-caption
    <Sub-caption> = <Radio Button control>[<Option index>].SubCaption

    // Modify the sub-caption
    <Radio Button control>[<Option index>].SubCaption = <New sub-caption>
Changing the colors of captions for the options in a Radio Button control
Properties specific to Radio Button controls
The following properties are used to programmatically manage the characteristics of a Radio Button control.
BackgroundColorUsed to find out and modify the background color of the Radio Button control.
ColorUsed to find out and modify the color of the text for the options found in the Radio Button control.
CountUsed to find out the number of options in a Radio Button control.
HorizontalAlignmentUsed to find out and modify the horizontal alignment of a control.
InitialValueUsed to find out the initial value of a Radio Button control.
NumberColumnUsed to find out the number of columns in a Radio Button control.
ReturnedValueUsed to find out and modify the value returned by an option found in a Radio Button control.
SubCaptionUsed to find out and modify the sub-caption of an option found in a Radio Button control.
VerticalAlignmentUsed to find out and modify the vertical alignment of a control.

For a complete list of WLanguage properties that can be used with a Radio Button control, see Properties associated with a Radio Button control.
Minimum version required
  • Version 23
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