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  • Characteristics of dialog box
  • Line break in the dialog box
  • Miscellaneous
  • Application in the background: Android 10 specific case
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Stored procedures
Displays a message in a standard dialog box that proposes "Yes" and "No" and returns the user's choice.
Yes / No dialog
Remarks:
  • This is a blocking dialog box. To continue running the application, the user must validate one of the buttons.
    Versions 25 and later
    AndroidiPhone/iPad To avoid blocking the application, use YesNoAsynchronous.
    New in version 25
    AndroidiPhone/iPad To avoid blocking the application, use YesNoAsynchronous.
    AndroidiPhone/iPad To avoid blocking the application, use YesNoAsynchronous.
Versions 15 and later
Android This function is now available for Android applications.
New in version 15
Android This function is now available for Android applications.
Android This function is now available for Android applications.
Versions 17 and later
iPhone/iPad This function is now available for iPhone/iPad applications.
New in version 17
iPhone/iPad This function is now available for iPhone/iPad applications.
iPhone/iPad This function is now available for iPhone/iPad applications.
Versions 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Example
AndroidiPhone/iPadUniversal Windows 10 AppWindows Mobile
// Exit choice
IF YesNo("Do you want to exit from the program?") = Yes THEN
Close()
END
Syntax
AndroidiPhone/iPadUniversal Windows 10 App

Displaying a Yes/No dialog box Hide the details

<Result> = YesNo([<Selected button>, ] <Text> [, <Line 2> [... [, <Line N>]]])
<Result>: Integer constant
Identifies the button selected by the user:
No0The [NO] button was chosen by the user
or he has closed the dialog box via the 'X' icon.
Yes1The [YES] button was chosen by the user
<Selected button>: Optional integer constant
Button selected by default in the dialog box:
No0selected by default
Yes
(Default value)
1selected by default
<Text>: Character string
Text to display.
<Line 2>: Optional character strings
Text displayed on the following lines.
<Line N>: Optional character strings
Text displayed on the following lines.
Remarks

Characteristics of dialog box

  • The title of the dialog box corresponds to the title of the current window (or page).
    AndroidiPhone/iPad To comply with the system specifications, the title of dialog box is empty by default. To define this title, use NextTitle.
  • To modify or define the title of dialog box, use NextTitle.
  • The message is aligned to left.
  • The captions of buttons depend on the runtime language of Windows.
  • The maximum number of characters cannot exceed 4096. If a larger string is passed in parameter, it will be truncated.
  • The icon displayed (exclamation mark) cannot be modified.

Line break in the dialog box

The CR string (Carriage Return) can be used to force a break to the next line. For example:
YesNo("The XXX form was modified." + CR + ...
"Do you want to save it before exiting?")
is equivalent to:
YesNo("The XXX form was modified.", ...
"Do you want to save it before exiting?")
You also have the ability to use the syntax of multiline strings. For example:
YesNo(
[
The XXX form was modified.
 
Do you want to save it before exiting?
])
AndroidiPhone/iPadUniversal Windows 10 AppWindows Mobile

Miscellaneous

  • Timers (TimerSys) are not stopped when this function is called.
  • Windows Mobile DelayBeforeClosing limits how long the message is displayed. The dialog box is automatically closed. For the question or confirmation dialog boxes, the expected answer corresponds to the default button.
  • The caption of buttons is displayed in the language used by Windows on the current computer.
  • iPhone/iPad This function must not be used:
    • in the event "Resizing" of the window. Otherwise, the application will be locked.
    • in the event "Changing the orientation" of the window.
    • in the event "Move to the foreground" associated with the project.
      Remark: However, the function can be used in the event "Move to the foreground" of a window.
    • in a thread.
  • Android The position of buttons depends on the Android version. From Android version 4.1, the validation button is positioned on the right by the system. Dialog is used to define the position of buttons if necessary.
Versions 25 and later
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
YesNo can open a window. If this function is used while the application is in the background, a fatal error will occur.
Tips:
  • It is possible to determine if the application is in the background using InBackgroundMode.
  • If an application needs to interact with the user while it is in the background, the solution is to display a notification (via the Notification type). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
New in version 25
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
YesNo can open a window. If this function is used while the application is in the background, a fatal error will occur.
Tips:
  • It is possible to determine if the application is in the background using InBackgroundMode.
  • If an application needs to interact with the user while it is in the background, the solution is to display a notification (via the Notification type). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
YesNo can open a window. If this function is used while the application is in the background, a fatal error will occur.
Tips:
  • It is possible to determine if the application is in the background using InBackgroundMode.
  • If an application needs to interact with the user while it is in the background, the solution is to display a notification (via the Notification type). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
Business / UI classification : UI Code
Component : wd250obj.dll
Minimum version required
  • Version 9
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