OKCancel (Function)

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Characteristics of dialog box
Displaying the dialog box
Line break in the dialog box
Miscellaneous

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OKCancel (Function)

Displays a message in a standard dialog box that proposes "OK" and "Cancel" and returns the user's choice.

Remarks:

This is a blocking dialog box. To continue running the application, the user must validate one of the buttons.

Ejemplo

// Delete a line with confirmation (yes by default)
IF OKCancel("Delete this record?") THEN
HDelete(CUSTOMER)
END

// Ask to confirm the deletion of the file whose
// name is found in the FILE_NAME variable, with
// positioning on the "No" button in the OKCancel window
IF OKCancel(No, "Delete the file?") THEN
fDelete(FILE_NAME)
END

Sintaxis

Displaying an OK/Cancel dialog box Ocultar los detalles

<Result> = OKCancel([<Selected button>, ] <Text> [, <Line 2> [... [, <Line N>]]])

<Result>: Boolean

Identifies the button selected by the user:
False The "Cancel" button was chosen by the user.
True The "OK" button was chosen by the user.

<Selected button>: Optional boolean

Button selected by default in the dialog box:
No "Cancel" button selected by default.
True
(by default) "OK" button selected by default.

<Text>: Character string

Text to display.

<Line 2>: Optional character string

Text displayed on the following lines.

<Line N>: Optional character string

Text displayed on the following lines.

Displaying an OK/Cancel dialog box on the browser Ocultar los detalles

OKCancel([<Selected button>, ] <Code for OK> , <Code for cancel> , <Text> [, <Line 2> [... [, <Line N>]]])

<Selected button>: Optional boolean

Button selected by default in the dialog box:
No "Cancel" button selected by default.
True
(by default) "OK" button selected by default.

<Code for OK>: Character string (with quotes)

Code to run if the OK button is chosen by the Web user. This parameter can correspond to:
the name of a button. If the OK button is selected, the click code of this button will be run.
the name of a browser function or procedure. If the OK button is selected, this procedure will be run.
a string or another value. If the OK button is selected, the value will be run as being a JavaScript code.

<Code for cancel>: Character string (with quotes)

Code to run if the Cancel button is chosen by the Web user. This parameter can correspond to:
the name of a button. If the Cancel button is selected, the click code of this button will be run.
the name of a browser function or procedure. If the Cancel button is selected, this procedure will be run.
a string or another value. If the Cancel button is selected, the value will be run as being a JavaScript code.

<Text>: Character string (with quotes)

Text to display.

<Line 2>: Optional character string (with quotes)

Text displayed on the following lines.

<Line N>: Optional character string (with quotes)

Text displayed on the following lines.

Observaciones

Characteristics of dialog box

El título del cuadro de diálogo corresponde al título de la ventana (o página) actual.
Para modificar o definir el título del cuadro de diálogo, utilice la función 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.

Para personalizar este cuadro de diálogo (así como todos los cuadros de diálogo del sistema del sitio), seleccione la opción "Aplicar tema a los cuadros de diálogo (YesNo y OKCancel)" en la pestaña "Tema" de la ventana de descripción del proyecto.

Displaying the dialog box

The dialog box does not lock other processes. The dialog box is displayed in the center of the page, with a DDW effect (Dim Disabled Windows).

OKCancel uses the internal page named "WEBDEVOKCancel". To include this page in your project:

Click among the quick access buttons.
The element creation window appears: click "Page" then "Page".
Click "Internal page" in the wizard and select the internal page named "OK/Cancel".
Validate. The "WEBDEVOKCancel" page is displayed in the editor.
Save the page by keeping its default name.

Line break in the dialog box

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

IF OKCancel("Caution: you are going to delete this record" + CR + ...
"Do you want to continue?") THEN
HDelete(CUSTOMER)
END

is equivalent to:

IF OKCancel("Caution: this record will be deleted", ...
"Do you want to continue?") THEN
HDelete(CUSTOMER)
END

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

OKCancel(

[

Caution: you are going to delete this record.

Do you want to continue?

])

Miscellaneous

The timers (TimerSys) are not stopped during the call to this function.
The text of the buttons is displayed in the system language.
If your project uses pre-launched sessions, this function must not be used in the "Initializing" event of the project. This function must be used in the event "Initializing the project after connection to the site".

Componente : wd250obj.dll

Versión mínima requerida

Versión 9

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Comentarios

Exemplo OkCancel

Exemplo OkCancel

IF OKCancel("Vamos Gravar") THEN
//Comandos
Info("Comandos")
END

//Blog com Video e exemplo
http://windevdesenvolvimento.blogspot.com.br/2016/07/curso-windev-funcoes-dialogo-2-okcancel.html
https://www.youtube.com/watch?v=ECbkPsdEoIY

De matos AMARILDO

10 07 2016

Última modificación: 11/06/2020

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