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GoFiler Legato Script Reference
Legato v 1.5b Application v 5.24b
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Chapter Nine — Dialog Functions (continued)
RADIOBUTTON Resource Statement
Overview
The RADIOBUTTON statement can be used as part of the body of a dialog resource specification. It is a specific method of specifying a radio button. The control is a small circle with the given text displayed next to it, typically to the right of it.
Syntax/Parameters
Syntax
RADIOBUTTON text, id, x, y, width, height, [style], [extended-style]
Parameters
text
The text that is to be displayed with the control (the control’s caption). The text is positioned within the control or adjacent to the control.
This parameter must contain zero or more characters enclosed in double quotation marks ("). Strings are automatically converted to Unicode in the resulting resource file. By default, the characters listed between the double quotation marks are ANSI characters, and escape sequences are interpreted as byte escape sequences. If a double quotation mark is required in the text, you must include the double quotation mark twice. An ampersand (&) character in the text indicates that the following character is used as a mnemonic character for the control. When the control is displayed, the ampersand is not shown, but the mnemonic character is underlined. The user can choose the control by pressing the key corresponding to the underlined mnemonic character. To use the ampersand as a character in a string, insert two ampersands (&&).
id
The control identifier. This value must be a 16-bit unsigned integer in the range 0 through 65,535 or -1 (same as 0xFFFF or 65535). Except for -1, control identifiers must be unique. Duplicate control values for the same dialog page will result in an error. id is used to access the control within dialog procedures. A value of -1 is typically used for legends and other static controls and cannot be used for controls that require programmatic access.
x
The X coordinate in dialog units of the left side of the control relative to the left side of the dialog box. This value must be a 16-bit unsigned integer in the range 0 through 65,535. Use caution when overlaying controls.
y
The Y coordinate in dialog units of the top side of the control relative to the top of the dialog box. This value must be a 16-bit unsigned integer in the range 0 through 65,535. Use caution when overlaying controls.
width
The width of the control. This value must be a 16-bit unsigned integer in the range 1 through 65,535. The width is in 1/4-character units.
height
The height of the control. This value must be a 16-bit unsigned integer in the range 1 through 65,535. The height is in 1/8-character units.
style
An optional predefined name or literal integer value that specifies the style of the control. By default, the style is BS_RADIOBUTTON | WS_TABSTOP.
extended-style
An optional extended window style. The style parameter must be specified in order to specify extended-style. For more information, see EXSTYLE.
Remarks
Radio button controls are useful in allowing a user to select a single option from a group of options, each marked with its own radio button. The control highlights the circle and sends a message to its parent window when the user selects the button. The control removes the highlight and sends a message when the button is next selected. This action of highlighting and unhighlighting the control is handled by the script engine.
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