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Reference Guide for OpenMatrix Language Functions
The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
GUI Commands
questdlg
Shows a dialog box with a question s. By default, the dialog displayed will have the 'Yes', 'No' and 'Cancel' buttons.

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- Extended Definitions for Advanced Users
  PDF file with in-depth information on key topics in the User's Guide.
- Scripting Guide for OpenMatrix Language
  OpenMatrix is a mathematical scripting language.
- Reference Guide for OpenMatrix Language Functions
  The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
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    - edit
      Opens the file, filename, in the Twin Activate text editor. edit is only available in the Twin Activate GUI.
    - errordlg
      Shows a dialog box with the error s.
    - inputdlg
      Shows a dialog box with label(s), s for text field(s) that require user input.
    - listdlg
      Shows a dialog box with a list of strings which the user can pick. This command is only available in the GUI.
    - msgbox
      Shows a dialog box with the message s.
    - questdlg
      Shows a dialog box with a question s. By default, the dialog displayed will have the 'Yes', 'No' and 'Cancel' buttons.
    - uigetdir
      Displays a directory selection dialog.
    - uigetfile
      Displays a dialog for selecting existing file(s). Multiple files can be selected using the Ctrl key.
    - uiputfile
      Displays a file selection dialog.
    - warndlg
      Shows a dialog box with the warning s.
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  Describes all of the blocks in the installed Twin Activate library.
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  Provides information about developing and simulating models through the Twin Activate Application Program Interface.
- Glossary
  Key terms associated with the software.
Frequently Asked Questions
You've got questions? We've got answers!

questdlg

Shows a dialog box with a question s. By default, the dialog displayed will have the 'Yes', 'No' and 'Cancel' buttons.

Syntax

R = questdlg(s)

R = questdlg(s, c)

R = questdlg(s, c, defaultButton)

R = questdlg(s, c, button1, button2, defaultButton)

R = questdlg(s, c, button1, button2, button3, defaultButton)

Inputs

s: Content to display in the dialog. String inputs can have the '\n' newline character, which are displayed on separate lines of the dialog. String elements of cell inputs will be displayed on new lines in the dialog.; Type: string | cell
c (optional): Specifies the caption to be displayed for the dialog. If no caption is specified, the caption displayed is 'Question'.; Type: string
defaultButton (optional): The default button that is applied when the 'Enter' key is pressed. defaultButton must match the text of other buttons in the dialog.; Type: string
button1 (optional): Specifies the text displayed for the first button in the dialog. The default text displayed is 'Yes'.; Type: string
button2 (optional): Specifies the text displayed for the second button in the dialog. The default text displayed is 'No'.; Type: string
button3 (optional): Specifies the text displayed for the third button in the dialog. If button3 is empty, the button is not displayed. The default text of the displayed button is 'Cancel'.; Type: string

Outputs

R: R contains the text of the button you select.; Type: string

Examples

Cell input with a caption:

R = questdlg({'Is', 'this', 'a', 'test?'}, 'Test')

R = Yes
Content displayed in the dialog with caption 'Test' is
'Is'
'this'
'a'
'test'

String input with caption and default button option:

R = questdlg('Is this a test?', 'Test', 'No')

R = No
Content displayed in the dialog with the caption 'Test' is
'Is this a test?'

String input with customized buttons and default option:

R = questdlg('How is the weather?', 'Weather', 'Sunny', 'Cloudy', 'Unpredictable', 'Unpredictable')

R = Unpredictable
Content displayed in the dialog with the caption 'Weather', with buttons 'Sunny',
'Cloudy' and 'Unpredictable' is 'How is the weather?'