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  • 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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Stored procedures
Displays a message in a standard dialog box that proposes "Yes", "No", "Cancel" and returns the user's choice.
Confirmation example
Remarks:
  • This is a modal warning window. To continue running the application, the user must validate one of the buttons.
    AndroidiPhone/iPad To avoid blocking the application, use ConfirmAsynchronous.
Example
Universal Windows 10 AppAndroidiPhone/iPad
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
Universal Windows 10 AppAndroidiPhone/iPad

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:
No0The user selected [NO].
Yes1The user selected [YES].
Cancel2The user selected [CANCEL].
<Selected button>: Optional integer constant
Button selected by default in the dialog box:
No0selected by default.
Yes
(Default value)
1selected by default.
Cancel2selected 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).
    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.

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.
  • iPhone/iPad 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.
      Remark: However, the function can be used in the "Move to the foreground" event of a window.
    • in a thread.
Android

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.
Component: wd290obj.dll
Minimum version required
  • Version 9
This page is also available for…
Comments
Exemplo Confirm
Exemplo Confirm

Res is int
NextTitle("Modifica o Formulario")
Res = Confirm("Primeira Linha."+CR+"TESTE","Seguda Linha?")
SWITCH Res
CASE Yes:
Info("ok")
CASE No:
Close()
CASE Cancel:
ReturnToCapture()
END

//Blog com Video e Exemplo
http://windevdesenvolvimento.blogspot.com.br/2016/07/curso-windev-funcoes-dialogo-1-confirm.html
https://www.youtube.com/watch?v=jjBIYgdVK1s
De matos AMARILDO
08 Jul. 2016

Last update: 02/28/2024

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