Confirm (Function)

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Characteristics of 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.
Versions 25 and later
To avoid blocking the application, use ConfirmAsynchronous.
New in version 25
To avoid blocking the application, use ConfirmAsynchronous.
To avoid blocking the application, use ConfirmAsynchronous.

Versions 15 and later

This function is now available for Android applications.

New in version 15

This function is now available for Android applications.

Versions 17 and later

This function is now available for iPhone/iPad applications.

New in version 17

This function is now available for iPhone/iPad applications.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Example

Res is int
NextTitle("Modifying the form")
Res = Confirm("Some modifications have been made to the form.", ...
"Do you want to save them before you close the form?")
SWITCH Res
CASE Yes: SaveForm() // Backup process
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

Characteristics of dialog box

The message is aligned to left.
The captions of buttons depend on runtime language of Windows (or on the runtime language of browser for a WEBDEV site).
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 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("The XXX form was modified." + CR + ...
"Do you want to save it before exiting?")

is equivalent to:

Confirm("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:

Confirm(
[
The XXX form has been modified.

DO you want TO save changes before closing?
])

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 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.

Versions 25 and later

Application in the background: Specific case from Android 10

From 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.

New in version 25

Application in the background: Specific case from Android 10

From 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.

Application in the background: Specific case from Android 10

From 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: wd270obj.dll