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  • Characteristics of dialog box
  • Displaying the dialog box
  • Line break in the dialog box
  • Miscellaneous
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Stored procedures
Displays a message in a standard dialog box that proposes "OK" and "Cancel" and returns the user's choice.
To close the window, the user must validate one of the buttons.
Versions 24 and later
Ajax This function is now available in Ajax mode.
New in version 24
Ajax This function is now available in Ajax mode.
Ajax This function is now available in Ajax mode.
Example
WEBDEV - Server code
// Delete a line with confirmation (yes by default)
IF OKCancel("Delete this record?") THEN
HDelete(CUSTOMER)
END
WEBDEV - Server code
// 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
Syntax
WEBDEV - Server code

Displaying an OK/Cancel dialog box Hide the details

<Result> = OKCancel([<Selected button>, ] <Text> [, <Line 2> [... [, <Line N>]]])
<Result>: Boolean
Identifies the button selected by the user:
FalseThe "Cancel" button was chosen by the user.
TrueThe "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.
WEBDEV - Browser code

Displaying an OK/Cancel dialog box on the browser Hide the details

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.
Remarks

Characteristics of dialog box

  • The title of the dialog box corresponds to the title of the current window (or page).
  • 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.
Versions 16 and later
WEBDEV - Server code To customize this dialog box (as well as all system dialog boxes of your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin/Style" tab of the project description window.
WEBDEV - Server code To customize this dialog box (as well as all system dialog boxes of your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin" tab of the project description window.
New in version 16
WEBDEV - Server code To customize this dialog box (as well as all system dialog boxes of your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin/Style" tab of the project description window.
WEBDEV - Server code To customize this dialog box (as well as all system dialog boxes of your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin" tab of the project description window.
WEBDEV - Server code To customize this dialog box (as well as all system dialog boxes of your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin/Style" tab of the project description window.
WEBDEV - Server code To customize this dialog box (as well as all system dialog boxes of your site), check "Apply the skin to the dialog boxes (YesNo and OKCancel)" in the "Skin" tab of the project description window.
WEBDEV - Browser code

Displaying the dialog box

The display of the dialog box is not a locking operation. The dialog box is displayed in the center of the page, with a DDW effect (Dim Disabled Windows).
OKCancel is using the internal page named "WEBDEVOKCancel". To include this page in your project:
  1. Select "File .. New .. Page".Click among the quick access buttons. Click "Page" in the wheel that is displayed. The window for creating a new element is displayed: click "Page" then "Page".
  2. In the "Internal page" tab, select the internal page named "OK/Cancel".Click "Internal page" in the wizard and select the internal page named "OK/Cancel".
  3. Validate. The "WEBDEVOKCancel" page is displayed in the editor.
  4. 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
WEBDEV - Server code

Miscellaneous

  • Timers (TimerSys) are not stopped during the call to this function.
  • The caption of buttons is displayed in the language used by Windows on the current computer.
  • Versions 20 and later
    WEBDEV - Server code If your project uses pre-launched sessions, this function must not be used in the event "Initializing" of the project. This function must be used in the event "Initializing the project after connection to the site".
    New in version 20
    WEBDEV - Server code If your project uses pre-launched sessions, this function must not be used in the event "Initializing" of the project. This function must be used in the event "Initializing the project after connection to the site".
    WEBDEV - Server code If your project uses pre-launched sessions, this function must not be used in the event "Initializing" of the project. This function must be used in the event "Initializing the project after connection to the site".
Business / GUI classification : GUI Code
Component : wd250obj.dll
Minimum version required
  • Version 9
This page is also available for…
Comments
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 Jul. 2016