ReturnToCapture (Function)

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Help / WLanguage / WLanguage functions / Controls, pages and windows / Control functions

Focus gain
ScreenFirst, SetFocus and ReturnToCapture
Error
ReturnToCapture on a window
ReturnToCapture on a Table control column
ReturnToCapture on the current control
ReturnToCapture on the last selected control
Processes / Events executed when ReturnToCapture is called
ReturnToCapture and END:

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ReturnToCapture (Function)

In french: RepriseSaisie

Not available

Stops the current process and forces the input in the specified control, window or page.

ReturnToCapture can be used in a browser event (onchange, onclick, etc.), but it cannot be used in a local procedure or a global browser procedure.

Note: This function is equivalent to SetFocusAndReturnToUserInput.

Example

// Si l'utilisateur n'a rien saisi dans le champ
IF SAI_Saisie1 = "" THEN
	// On affiche un message et on remet l'utilisateur en saisie sur le champ 
	Error("Saisissez une valeur")
	ReturnToCapture(SAI_Saisie1)
END

// Positionner le curseur de souris dans une cellule d'un champ Table (multisélection ou non) 
TABLE_Nom_De_Table = Indice_de_ligne
ReturnToCapture(TABLE_Nom_De_Table.COL_Nom_de_colonne)

Syntax

SetFocusAndReturnToUserInput([<Element to handle>])

<Element to handle>: Control, window or page name

Name of control, column or window that will gain focus (see Notes). If this parameter is not specified, the current control gains focus.
To specify a control that belongs to a window other than the current window, <Element to handle> must be in the following format: <Window name>.<Control name>.
Name of the control or page that will gain focus (see Notes). If this parameter is not specified, the last current control gains focus.
Name of the control or window that will gain focus (see Notes). If this parameter is not specified, the current control gains focus.

Remarks

Focus gain

Taking "focus" is represented in different ways:

Blinking cursor (or "Caret") for the edit controls.
Dotted rectangle for the other types of controls (Button, List Box, Radio Button controls, etc.).

ScreenFirst, SetFocus and ReturnToCapture

These functions have a different behavior:

ReturnToCapture stops the current process to force the input in the specified control.
ScreenFirst defines which control will receive input focus (when the current code stops and input focus is set back to a control).
SetFocus stops the current process, defines which control will receive input focus and resumes the current process.

Error

A WLanguage error occurs if <Element to handle> does not correspond to a control in the current window or page.

ReturnToCapture on a window

If <Element to handle> corresponds to the name of a window, the window becomes active. The control that will gain focus in this window will correspond to:

the last control previously in edit in this window,
the first control that can gain focus in this window (if no data was previously entered).

ReturnToCapture on a Table control column

ReturnToCapture sets the focus on the specified column. If the Table control is not receiving any input, it becomes editable.

ReturnToCapture on the current control

ReturnToCapture used without parameters sets the focus on the current control. This function, called in the exit code of an Edit control, is used to force the input in the selected control if the data entered and the expected data do not match.

ReturnToCapture on the last selected control

The control must be one of the following types of controls:

Edit control.
Check Box control.
Radio Button control.
List Box control.
Combo Box control.
"Clickable area" Image control.

If the name of the control corresponds to a string that is built, the alias of the control must be used ("ControlAlias"+Num for example). In this case, no verification is performed: Javascript errors may be displayed if the focus is given to a field that doesn't exist.

Reminder: The alias of a field corresponds to the name of this field in the HTML page.. To find out this alias:

in the code editor, press Shift + F1.
use the Alias property.

Processes / Events executed when ReturnToCapture is called

The WLanguage code that follows the call to ReturnToCapture is not executed and control is given to the user.

Special cases:

if ReturnToCapture is called in a code called by Execute, ExecuteCode or ExecuteProcess, the code called by Execute, ExecuteCode or ExecuteProcess is interrupted. The execution resumes after the call to Execute, ExecuteCode or ExecuteProcess.
if ReturnToCapture is called in the code of a function of a window other than the current one, the code of this function is interrupted and execution resumes after the call.
if ReturnToCapture is called in the code of a component (procedure or method), the code is interrupted and execution resumes after the call to the procedure or method.
if ReturnToCapture is called in the code of a procedure of an internal window, the code is interrupted and execution resumes after the call to the procedure.
if ReturnToCapture is called in the code of a menu option, the code is interrupted and execution resumes after the call to the option.
if ReturnToCapture is called in a window procedure called from a supercontrol, the code is interrupted and execution resumes after the call to the procedure.
if ReturnToCapture is called in the code of a procedure of a supercontrol or control template, the code is interrupted and execution resumes after the call to the procedure.

The current process is permanently interrupted. For example:

ReturnToCapture("Saisie1")
Info("XXX")    // N'est jamais exécuté

In most cases, the exist events (from the current control or window) and the input events (in the specified control or window) are run at the same time as ReturnToCapture.

Exceptions:

No code is executed if <Element to handle> is the current control.
The exit code of the selected control is not run if ReturnToCapture is used in one of the events of this control.

To avoid interrupting the process, use ScreenFirst or SetFocus.

The WLanguage code that follows the call to ReturnToCapture is not executed. The execution of processes resumes:

when the user gets the control back.
during the call to Execute or ExecuteProcess.

ReturnToCapture and END:

After a call to ReturnToCapture, the code that follows the "END:" statement is not executed. ReturnToCapture can be replaced with the call to ScreenFirst followed by RETURN.

Business / UI classification: UI Code

Component: wd300obj.dll