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353
SCROLL_VIEW built-in
Description
Moves the view to a different position on its canvas by changing the Viewport X Position on Canvas and
Viewport Y Position on Canvas properties. Moving the view makes a different area of the canvas visible
to the operator, but does not change the position of the view within the window.
Note: For a content or toolbar canvas, the window in which the canvas is displayed represents the view
for that canvas. For a stacked canvas, the view size is controlled by setting the Viewport Width and
Viewport Height properties.
Syntax
PROCEDURE SCROLL_VIEW
(
view_id  
ViewPort
,
   x        
NUMBER
,
   y        
NUMBER);
PROCEDURE SCROLL_VIEW
(
view_name  
VARCHAR2
,
   x          
NUMBER
,
   y          
NUMBER);
Built-in Type  unrestricted procedure
Enter Query Mode  yes
Parameters
view_id
Specifies the unique ID that Form Builder assigns the view when it creates
the object.  Use the FIND_VIEW built-in to return the ID to an
appropriately typed variable.  The data type of the ID is ViewPort.
view_name
Specifies the name that you gave the object when defining it.  The data type
of the name is VARCHAR2.
x
Specifies the x coordinate of the view’s upper left corner relative to the
upper left corner of the canvas.
y
Specifies the y coordinate of the view’s upper left corner relative to the
upper left corner of the canvas.
SCROLL_VIEW examples
/*
** Built-in:  SCROLL_VIEW
** Example:   Scroll the view whose name is passed in 10% to
**            the right or left depending on the ’direction’
**            parameter.
*/
PROCEDURE Scroll_Ten_Percent( viewname VARCHAR2,
direction VARCHAR2 ) IS
vw_id        ViewPort;
vw_wid       NUMBER;
vw_x         NUMBER;
cn_id        Canvas;
cn_wid       NUMBER;
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354
ten_percent  NUMBER;
new_x        NUMBER;
old_y        NUMBER;
BEGIN
/*
** Get the id’s for the View and its corresponding canvas
*/
vw_id := Find_View( viewname );
cn_id := Find_Canvas( viewname );
/*
** Determine the view width and corresponding canvas
** width.
*/
vw_wid := Get_View_Property(vw_id,WIDTH);
cn_wid := Get_Canvas_Property(cn_id,WIDTH);
/*
** Calculate how many units of canvas width are outside of
** view, and determine 10% of that.
*/
ten_percent := 0.10 * (cn_wid - vw_wid);
/*
** Determine at what horizontal position the view
** currently is on the corresponding canvas
*/
vw_x:= Get_View_Property(vw_id,VIEWPORT_X_POS_ON_CANVAS);
/*
** Calculate the new x position of the view on its canvas
** to effect the 10% scroll in the proper direction.
** Closer than ten percent of the distance to the edge
** towards which we are moving, then position the view
** against that edge.
*/
IF direction=’LEFT’ THEN
IF vw_x > ten_percent THEN
new_x := vw_x - ten_percent;
ELSE
new_x := 0;
END IF;
ELSIF direction=’RIGHT’ THEN
IF vw_x < cn_wid - vw_wid - ten_percent THEN
new_x := vw_x + ten_percent;
ELSE
new_x := cn_wid - vw_wid;
END IF;
END IF;
/*
** Scroll the view that much horizontally
*/
old_y := Get_View_Property(vw_id,VIEWPORT_Y_POS_ON_CANVAS);
Scroll_View( vw_id, new_x , old_y );
END;
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355
SELECT_ALL built-in
Description
Selects the text in the current item.   Call this procedure prior to issuing a call to CUT_REGION or
COPY_REGION, when you want to cut or copy the entire contents of a text item.
Syntax
PROCEDURE SELECT_ALL;
Built-in Type   restricted procedure
Enter Query Mode  yes
Parameters
none
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356
SELECT_RECORDS built-in
Description
When called from an On-Select trigger, initiates default Form Builder SELECT processing.  This built-in
is included primarily for applications that run against a non-ORACLE data source, and use transactional
triggers to replace default Form Builder transaction processing.
Syntax
PROCEDURE SELECT_RECORDS;
Built-in Type   restricted procedure
Enter Query Mode  no
Parameters
none
SELECT_RECORDS restrictions
Valid only within an On-Select trigger.
SELECT_RECORDS examples
/*
** Built-in:  SELECT_RECORDS
** Example:   Perform Form Builder standard SELECT processing
**            based on a global flag setup at startup by the
**            form, perhaps based on a parameter.
** trigger:  On-Select
*/
BEGIN
/*
** Check the flag variable we setup at form startup
*/
IF :Global.Using_Transactional_Triggers = ’TRUE’ THEN
User_Exit(’my_select block=EMP’);
/*
** Otherwise, do the right thing.
*/
ELSE
Select_Records;
END IF;
END;
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357
SERVER_ACTIVE built-in
Description
Indicates whether or not the server associated with a given container is running: Returns TRUE if the
OLE server is running, FALSE if the OLE server is not running. You must define an appropriately typed
variable to accept the return value.
Syntax
FUNCTION SERVER_ACTIVE
(
item_id  
Item);
FUNCTION SERVER_ACTIVE
(
item_name  
VARCHAR2);
Returns  BOOLEAN
Built-in Type  unrestricted function
Enter Query Mode  no
Parameters
item_id
Specifies the unique ID that Form Builder assigns to the item when created.
Use the FIND_ITEM built-in to return the ID to an appropriately typed
variable.  The data type of the ID is Item.
item_name
Specifies the name of the object created at design time.  The data type of
the name is VARCHAR2 string.
SERVER_ACTIVE restrictions
Valid only on Microsoft Windows and Macintosh.
SERVER_ACTIVE examples
/*   
** Built-in: SERVER_ACTIVE
** Example:  Checks to see if the OLE server is active.
** trigger:  When-Button-Pressed
*/
DECLARE
item_id  ITEM;
item_name VARCHAR(25) := ’OLEITM’;
active_serv BOOLEAN;
BEGIN
item_id := Find_Item(item_name);
IF Id_Null(item_id) THEN
message(’No such item: ’||item_name);
ELSE
active_serv := Forms_OLE.Server_Active(item_id);
IF active_serv = FALSE THEN
Forms_OLE.Activate_Server(item_id);
END IF;
END IF;
END;
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358
SET_ALERT_BUTTON_PROPERTY built-in
Description
Changes the label on one of the buttons in an alert.
Syntax
PROCEDURE SET_ALERT_BUTTON_PROPERTY
(alert_id  
ALERT
,
   button    
NUMBER
,
   property  
VARCHAR2
,
   value     
VARCHAR2
)
;   
PROCEDURE SET_ALERT_BUTTON_PROPERTY
(
alert_name  
VARCHAR2,
   button      
NUMBER
,
   property    
VARCHAR2
,
   value       
VARCHAR2);
Built-in Type  unrestricted procedure
Enter Query Mode  yes
Parameters
alert_id
Specifies the unique ID (data type ALERT) that Form Builder assigns to the
alert when it is created.  Use FIND_ALERT to return the ID to an
appropriately typed variable.
alert_name
Specifies the VARCHAR2 name of the alert.
buttoA
constant that specifies the alert button you want to change, either
ALERT_BUTTON1, ALERT_BUTTON2, or ALERT_BUTTON3.
property
LABEL  Specifies the label text for the alert button.
value
Specifies the VARCHAR2 value to be applied to the  property you
specified.
Usage Notes
If the label specified is NULL, the button’s label reverts to the label specified at design time.
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359
SET_ALERT_PROPERTY built-in
Description
Changes the message text for an existing alert.
Syntax
SET_ALERT_PROPERTY
(alert_id  
ALERT
,
   property  
NUMBER
,
   message
VARCHAR2
)
;   
SET_ALERT_PROPERTY
(
alert_name  
VARCHAR2,
   property    
NUMBER
,
   message     
VARCHAR2);
Built-in Type  unrestricted procedure
Enter Query Mode  yes
Parameters
alert_id
Specifies the unique ID (data type ALERT) that Form Builder assigns to the
alert when it is created.  Return the ID to an appropriately typed variable.
alert_name
Specifies the VARCHAR2 name of the alert.
property
Specifies the specific alert property you are setting:
ALERT_MESSAGE_TEXT  Specifies that you are setting the text of the
alert message.
TITLE  Specifies the title of the alert. Overrides the value specified in
Form Builder unless the property value is NULL.
message
Specifies the message that is to replace the current alert message.  Pass the
message as a string enclosed in single quotes, as a variable, or in a
string/variable construction.
SET_ALERT_PROPERTY restrictions
If the message text exceeds 200 characters, it will be truncated.
SET_ALERT_PROPERTY examples
/*
** Built-in:  SET_ALERT_PROPERTY
** Example:   Places the error message into a user-defined alert
**            named ’My_Error_Alert’ and displays the alert.
** trigger:   On-Error
*/
DECLARE
err_txt   VARCHAR2(80) := Error_Text;
al_id     Alert;
al_button Number;
360
BEGIN
al_id := Find_Alert(’My_Error_Alert’);
Set_Alert_Property(al_id, alert_message_text, err_txt );
al_button := Show_Alert( al_id );
END;
361
SET_APPLICATION_PROPERTY built-in
Description
Sets (or resets) the application property for the current application.
Syntax
SET_APPLICATION_PROPERTY
(
property  
NUMBER,
   value     
VARCHAR2)
Built-in Type   unrestricted procedure
Enter Query Mode  yes
Parameters
property
Specifies the property you want to set for the given application.  The
possible properties are as follows:
BUILTIN_DATE_FORMAT  Specifies the Builtin date format mask.
CURSOR_STYLE  Specifies the cursor style for the given application.
DATE_FORMAT_COMPATIBILITY_MODE  Specifies how certain date
format conversion operations will be performed.
FLAG_USER_VALUE_TOO_LONG   Specifies how Form Builder should
handle user-entered values that exceed an item’s Maximum Length
property.  Valid values are PROPERTY_TRUE and PROPERTY_FALSE.
PLSQL_DATE_FORMAT  Specifies the PLSQL date format mask.
value
The new value to be set for this property.
362
SET_BLOCK_PROPERTY built-in
Description
Sets the given block characteristic of the given block.
Syntax
SET_BLOCK_PROPERTY
(
block_id
Block,
   property
VARCHAR,
   value
VARCHAR);   
SET_BLOCK_PROPERTY
(
block_id
Block,
   property
VARCHAR,
   x
NUMBER);   
SET_BLOCK_PROPERTY
(
block_id  
Block,
   property 
VARCHAR,
   x
NUMBER
   y
NUMBER);   
SET_BLOCK_PROPERTY
(
block_name
VARCHAR2,
   property
VARCHAR,
   value
VARCHAR);
SET_BLOCK_PROPERTY
(
block_name
VARCHAR2,
   property
VARCHAR,
   x
NUMBER);
SET_BLOCK_PROPERTY
(
block_name
VARCHAR2,
   property
VARCHAR,
   x
NUMBER,
   y
NUMBER);
Built-in Type  unrestricted procedure
Enter Query Mode  yes
Parameters
block_id
The unique ID Form Builder assigned to the block when you created it.
Datatype is BLOCK.
block_name
The name you gave the block when you created it.  Datatype is
VARCHAR2.
property
Specify one of the following constants:
ALL_RECORDS Specifies whether all the records matching the query
criteria should be fetched into the data block when a query is executed.
BLOCKSCROLLBAR_POSITION   Specifies both the x and y positions
of the block’s scroll bar in the form coordinate units indicated by the
Coordinate System form property.
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