ScreenFirst (Function)

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WLanguage functions

Controls, pages and windows

Functions for managing controls

ScreenFirst used with a window

Processes run when using ScreenFirst

ScreenFirst, SetFocus and ReturnToCapture

ControlExecuteClosing

ControlExecuteModification

CoordinateEditorToScreen

CoordinateScreenToEditor

Functions for managing controls

Taking focus
ScreenFirst used with a window
Processes run when using ScreenFirst
ScreenFirst, SetFocus and ReturnToCapture
Error
Subscripted control

WINDEV

WEBDEV

WINDEV Mobile

Others

See also

ScreenFirst (Function)

In french: EcranPremier

Defines the next control that will be in edit in the current window. This control will have "focus": the actions performed by the user on the keyboard will be applied to this control.

Versions 15 and later

This function is now available for the Android applications.

New in version 15

This function is now available for the Android applications.

Versions 16 and later

This function is now available for the WINDEV applications in Linux.

New in version 16

This function is now available for the WINDEV applications in Linux.

Versions 17 and later

This function is now available for the iPhone/iPad applications.

New in version 17

This function is now available for the iPhone/iPad applications.

Example

// Puts the input on the "EDT_Edit2" control
ScreenFirst(EDT_Edit2)

// Changes the next control in edit
IF ControlCurrent() <> EDT_Name THEN ScreenFirst(EDT_Name)

Syntax

ScreenFirst([<Control Name> [, <Subscript>]])

<Control Name>: Optional character string (with or without quotes)

Name of control (including table column) or window that will be in edit.
If this parameter corresponds to the name of a window, the window will be activated and a control that can take focus will be in edit.
If this parameter corresponds to a control that cannot take focus (invisible control, static control, and so on), the input will start from the next control according to the tab order.

<Subscript>: Optional integer

Subscript for a subscripted control.
This parameter is not available.

Remarks

Taking focus

When a control takes focus, this is indicated in different ways depending on the type of the control:

Blinking cursor (or "Caret") for the edit controls.
Dotted rectangle for the other types of controls (buttons, list boxes, radio buttons, and so on.).

Caution: Some types of controls cannot take focus ("Static" controls for example).

ScreenFirst used with a window

If <Control Name> corresponds to the name of a window, the window is activated. The control that will take focus in this window will correspond to:

the last control previously in edit in this window,
the first control that can take focus in this window (if no input was previously performed in this window).

Processes run when using ScreenFirst

In most cases, the exit process (from the current control or window) and the entry process (in the specified control or window) are run when ScreenFirst is called.

Exception to this rule: The exit code of the current control is not run if ScreenFirst is used in one of the processes of this control.

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 the next control that will be in edit (when the current code stops and when the input resumes).
SetFocus stops the current process, describes the next control that will be in edit and resumes the current process.

Error

A WLanguage error occurs if <Control Name> does not correspond to a control found in the current window.

Subscripted control

<Subscript> allows you to specify the subscript of a subscripted control. You can also use the name of the subscripted control. For example:

ScreenFirst(EDT_Edit1, 1) = ScreenFirst(EDT_Edit1[1])

Component : wd240obj.dll