Confirm (Function)

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Help / WLanguage / WLanguage functions / Standard functions / Windows functions / Dialog Box functions

Features of the dialog box
Line break in the dialog box
Miscellaneous
Application in the background: Specific case from Android 10

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Confirm (Function)

In french: Confirmer

Displays a message in a standard dialog box that proposes "Yes", "No", "Cancel" and returns the user's choice.

Remarks:

This is a modal warning window. To continue running the application, the user must validate one of the buttons.
To avoid blocking the application, use ConfirmAsynchronous.

Example

Res is int 
NextTitle("Modification de fiche")
Res = Confirm("Des modifications ont été apportées à la fiche.", ...
	"Souhaitez-vous les enregistrer avant de sortir de la fiche ?")
SWITCH Res 
	CASE Yes : SauveFiche() // Traitement de sauvegarde
	CASE No : Close()
	CASE Cancel : SetFocusAndReturnToUserInput()
END

Syntax

Displaying a Confirm dialog box Hide the details

<Result> = Confirm([<Selected button>, ] <Text> [, <Line 2> [... [, <Line n>]]])

<Result>: Integer constant

Identifies the button selected by the user:
No 0 The user selected [NO].
Yes 1 The user selected [YES].
Cancel 2 The user selected [CANCEL].

<Selected button>: Optional integer constant

Button selected by default in the dialog box:
No 0 selected by default.
Yes
(Default value) 1 selected by default.
Cancel 2 selected by default.

<Text>: Character string

Text to display.

<Line 2>: Optional character string

Text displayed on the second line.

<Line n>: Optional character string

Text displayed on the Nth line.

Remarks

Features of the dialog box

The message is aligned to the left.
The text of the buttons changes according to the language used by Windows at runtime (or used by the browser, in the case of a WEBDEV website).
The maximum number of characters cannot exceed 4096. If a larger string is passed as parameter, it will be truncated.
The icon displayed (exclamation mark in a WINDEV application, question mark in a WEBDEV application) cannot be modified.

The title of the dialog box corresponds to the title of the current window (or page).
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.

Line break in the dialog box

The CR string (Carriage Return) can be used to force a break to the next line. For example:

Confirm("La fiche XXX a été modifiée." + CR + ...
	"Voulez-vous la sauver avant de quitter ?")

is equivalent to:

Confirm("La fiche XXX a été modifiée.", ...
	"Voulez-vous la sauver avant de quitter ?")

You also have the ability to use the syntax of multiline strings. For example:

Confirm(
[
La fiche XXX a été modifiée.

Voulez-vous la sauver avant de quitter ?
])

Miscellaneous

Timers (TimerSys) are not stopped when this function is called.
The text of the buttons is displayed in the system language.
This function must not be used:
- in the "Resize" event of the window. Otherwise, the application will be locked.
- in the "Change the orientation" event of the window.
- in the "Move to the foreground" event associated with the project.
  Note: The function can also be used in the "Bring to foreground" event of a window..
- in a thread.

Application in the background: Specific case from Android 10

Starting with Android 10, it is no longer possible to open a window when the application is in the background.

Confirm 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). The application will be brought back to the foreground when the notification is clicked, if the ActivateApplication property is set to True. You can also open a window from the procedure passed to the ActionClick property.

For more details, see Android 10: Behavior of applications in the background.

Component: wd300obj.dll