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  • Characteristics of dialog box
  • Displaying the dialog box
  • Line break in the dialog box
  • Miscellaneous
  • Emulation
  • Application in the background: Android 10 specific case
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Stored procedures
Displays a message in a standard dialog box that proposes "Yes" and "No" and returns the user's choice.
Yes / No dialog
Remarks:
  • This is a blocking dialog box. To continue running the application, the user must validate one of the buttons.
    Versions 25 and later
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use YesNoAsynchronous.
    New in version 25
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use YesNoAsynchronous.
    WINDEVAndroidiPhone/iPad To avoid blocking the application, use YesNoAsynchronous.
  • WINDEV WINDEV allows you to apply the skin template of your project to this dialog box. See Customizing dialog boxes for more details.
Versions 15 and later
Android This function is now available for Android applications.
New in version 15
Android This function is now available for Android applications.
Android This function is now available for Android applications.
Versions 17 and later
iPhone/iPad This function is now available for iPhone/iPad applications.
New in version 17
iPhone/iPad This function is now available for iPhone/iPad applications.
iPhone/iPad This function is now available for iPhone/iPad applications.
Versions 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
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
WINDEVReports and QueriesAndroidiPhone/iPadUniversal Windows 10 AppWindows MobileJavaUser code (UMC)
// Exit choice
IF YesNo("Do you want to exit from the program?") = Yes THEN
Close()
END
Syntax
WINDEVWEBDEV - Server codeReports and QueriesAndroidiPhone/iPadUniversal Windows 10 AppJavaUser code (UMC)

Displaying a Yes/No dialog box Hide the details

<Result> = YesNo([<Selected button>, ] <Text> [, <Line 2> [... [, <Line N>]]])
<Result>: Integer constant
Identifies the button selected by the user:
No0The [NO] button was chosen by the user
or he has closed the dialog box via the 'X' icon.
Yes1The [YES] button was chosen by the user
<Selected button>: Optional integer constant
Button selected by default in the dialog box:
No0selected by default
Yes
(Default value)
1selected by default
<Text>: Character string
Text to display.
<Line 2>: Optional character strings
Text displayed on the following lines.
<Line N>: Optional character strings
Text displayed on the following lines.
WEBDEV - Browser code

Displaying a Yes/No dialog box on the browser Hide the details

YesNo([<Selected button>, ] <Code for Yes> , <Code for No> , <Text> [, <Line 2> [... [, <Line N>]]])
<Selected button>: Optional integer constant
Button selected by default in the dialog box:
No0[NO] button selected by default
Yes
(Default value)
1[YES] button selected by default
<Code for Yes>: Character string (with quotes)
Code to run if the Yes button is chosen by the Web user. This parameter can correspond to:
  • the name of a button. If the Yes button is selected, the click code of this button will be run.
  • the name of a browser function or procedure. If the Yes button is selected, this procedure will be run.
  • a string or another value. If the Yes button is selected, the value will be run as being a JavaScript code.
<Code for No>: Character string (with quotes)
Code to run if the No button is chosen by the Web user. This parameter can correspond to:
  • the name of a button. If the No button is selected, the click code of this button will be run.
  • the name of a browser function or procedure. If the No button is selected, this procedure will be run.
  • a string or another value. If the No 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).
    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.
  • 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.
WINDEV To customize this dialog box (as well as all system dialog boxes of your application), check "Customize the system windows (Info, YesNo, Confirm, Dialog)" in the "Style" tab of the project description. See Customizing dialog boxes for more details.
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" 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" 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).
YesNo is using the internal page named "WEBDEVYesNo". To include this page in your project:
  1. Click among the quick access buttons.
  2. The element creation window appears: click "Page" then "Page".
  3. In the "Internal Page" tab, select the internal page named "Yes/No".
  4. Validate. The "WEBDEVYesNo" page is displayed in the editor.
  5. 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:
YesNo("The XXX form was modified." + CR + ...
"Do you want to save it before exiting?")
is equivalent to:
YesNo("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:
YesNo(
[
The XXX form was modified.
 
Do you want to save it before exiting?
])
WINDEVWEBDEV - Server codeReports and QueriesAndroidiPhone/iPadUniversal Windows 10 AppWindows MobileJavaUser code (UMC)

Miscellaneous

  • Timers (TimerSys) are not stopped when this function is called.
  • WINDEV Windows events are not stopped when this function is called.
  • WINDEV When typing the function in the code editor, you have the ability to use the code wizard. Depending on the characteristics entered in the wizard, the function used can be different in the code that is automatically generated.
  • WINDEVWindows MobileJava DelayBeforeClosing limits how long the message is displayed. The dialog box is automatically closed. For the question or confirmation dialog boxes, the expected answer corresponds to the default button.
  • The caption of buttons is displayed in the language used by Windows on the current computer.
  • WEBDEV - Server code The first syntax is not available in an AWP page.
  • 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".
  • iPhone/iPad 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.
  • Android The position of buttons depends on the Android version. From Android version 4.1, the validation button is positioned on the right by the system. Dialog is used to define the position of buttons if necessary.
WINDEV

Emulation

A YesNo message can be emulated by EmulateYesNo.
Versions 25 and later
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
YesNo 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). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
New in version 25
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
YesNo 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). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
Android

Application in the background: Android 10 specific case

From Android 10, it is no longer possible to open a window when the application is in the background.
YesNo 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). When the notification is clicked on, the application will be brought back to the foreground if ..ActivateApplication is set to True. It is also possible to open a window from the procedure passed to ..ActionClick.
Business / UI classification : UI Code
Component : wd250obj.dll
Minimum version required
  • Version 9
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