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VBX.SET_PROPERTY built-in
Description
Sets the specified property for a VBX control.
Syntax
VBX.SET_PROPERTY
(
item_id   
ITEM
,
   property  
VARCHAR2
,
   value     
VARCHAR2);
VBX.SET_PROPERTY
(
item_name  
VARCHAR2
,
   property   
VARCHAR2
,
   value      
VARCHAR2);
Built-in Type:
unrestricted procedure
Enter Query Mode  yes
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.
property
Specifies a property or an element of a property array for a VBX control.  A
set of VBX properties exists for any given VBX control.  Examples of
VBX properties are Width, Height, and FontSize.  The data type of
property is a VARCHAR2 string.
value
Specifies the value to be applied to the VBX property.  The data type of
value is a VARCHAR2 string.
VBX.SET_PROPERTY restrictions
Valid only on Microsoft Windows.
VBX.SET_PROPERTY examples
/*
** Built-in:  VBX.SET_PROPERTY
** Example:   Uses the VBX.SET_PROPERTY built-in to set the
Index
**            property of the SpinButton VBX control.
** trigger:   When-Button-Pressed
*/
DECLARE
ItemName VARCHAR2(40) := ’SPINBUTTON’;
VBX_VAL_PROP VARCHAR2(40);
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464
VBX_VAL  VARCHAR2(40);
BEGIN
IF :System.Custom_Item_Event = ’SpinDown’ THEN
VBX_VAL_PROP := ’Index’;
VBX_VAL := ’5’;
VBX.Set_Property(ItemName,VBX_VAL_PROP,VBX_VAL);
END IF;
END;
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VBX.SET_VALUE_PROPERTY built-in
Description
Sets the VBX Control Value Property of a VBX control.
Syntax
VBX.SET_VALUE_PROPERTY
(
item_id   
ITEM,
   property  
VARCHAR2);   
VBX.SET_VALUE_PROPERTY
(
item_name  
VARCHAR2
,
   property   
VARCHAR2);
Built-in Type  unrestricted procedure
Enter Query Mode  yes
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.
property
Specifies a property for the Form Builder VBX Control Value Property. A
set of VBX properties exists for any given VBX control.  Examples of
VBX properties are Width, Height, and FontSize.  The data type of
property is a VARCHAR2 string.
VBX.SET_VALUE_PROPERTY restrictions
Valid only on Microsoft Windows.
VBX.SET_VALUE_PROPERTY examples
/*
** Built-in:  VBX.SET_VALUE_PROPERTY
** Example:   Uses VBX.SET_VALUE_PROPERTY built-in to set the
**            VBX Control Value property.
*/
DECLARE
ItemName VARCHAR2(40) := ’SPINBUTTON’;
VBX_VAL_PROP VARCHAR2(40);
BEGIN
IF :System.Custom_Item_Event = ’SpinDown’ THEN
VBX_VAL_PROP := ’Index’;
VBX.Set_Value_Property(ItemName,VBX_VAL_PROP);
END IF;
END;
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WEB.SHOW_DOCUMENT built-in
Syntax:
SHOW_DOCUMENT
(url, target);
Built-in Type:   unrestricted procedure
Enter Query Mode:  yes
Description:
Specifies the URL and target window of a Web application.
Parameters:
url
Datatype is VARCHAR2.  Specifies the Uniform Resource Locator of the
document to be loaded.
target
Datatype is VARCHAR2.  Specifies one of the following targets:
_SELF  Causes the document to load into the same frame or window as the
source document.
_PARENT Causes the target document to load into the parent window or
frameset containing the hypertext reference.  If the reference is in a window
or top-level frame, it is equivalent to the target _self.
_TOP Causes the document to load into the window containing the
hypertext link, replacing any frames currently displayed in the window.
_BLANK Causes the document to load into a new, unnamed top-level
window.
Restrictions:
Can only be used from within a form run from the Web.
Example:
/*
** Built-in:  WEB.SHOW_DOCUMENT
** Example:   Display the specified URL in the target window.
*/
BEGIN
Web.Show_Document(‘http://www.abc.com’, ‘_self’);
END;
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467
WHERE_DISPLAY built-in
Description
Toggles the Where menu navigation option on and off.  In a full-screen menu, the Where option displays
information about the operator’s current location in the menu hierarchy.
Syntax
WHERE_DISPLAY;
Built-in Type:
unrestricted procedure
Enter Query Mode  yes
Parameters
none
WHERE_DISPLAY restrictions
WHERE_DISPLAY is valid only in a full-screen menu.
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468
WRITE_IMAGE_FILE built-in
Description
Writes the image from a Form Builder image item into the specified file.
Syntax
WRITE_IMAGE_FILE
(
file_name  
VARCHAR2
,
  file_type  
VARCHAR2
,
  item_id    
ITEM,
compression_quality
NUMBER,
image_depth
NUMBER);
WRITE_IMAGE_FILE
(
file_name            
VARCHAR2
,
   file_type            
VARCHAR2
,
   item_name  
VARCHAR2,
compression_quality
NUMBER,
image_depth
NUMBER);
Built-in Type  unrestricted procedure
Enter Query Mode  yes
Parameters
file_name
The name of the file where the image is stored.  The file name must adhere
to your operating system requirements.
file_type
The file type of the image:  BMP, CALS, GIF, JFIF, JPEG, PICT, RAS,
TIFF, or TPIC.  The parameter takes a VARCHAR2 argument.
item_id
The unique ID Form Builder assigned to the image item when you created
it.  Use the FIND_ITEM built-in to return the ID to an appropriately typed
variable.  Datatype is ITEM.
item_name
The name you gave the image item when you defined it.  Datatype is
VARCHAR2.
compression_quality
The degree of compression Form Builder will apply to the image when it
stores it to the file (optional).  Datatype is VARCHAR2.  Valid values
are:NO_COMPRESSION, MINIMIZE_COMPRESSION,
LOW_COMPRESSION, MEDIUM_COMPRESSION,
HIGH_COMPRESSION, MAXIMIZE_COMPRESSION
image_depth
The degree of depth Form Builder will apply to the image when it stores it
to the file (optional).  Datatype is VARCHAR2.  Valid values
are:ORIGINAL_DEPTH, MONOCHROME, GRAYSCALE, LUT
(Lookup Table), RGB  (Red, Green, Blue)
WRITE_IMAGE_FILE restrictions
•  The indicated file type must be compatible with the actual file type of the image.
•  As with any file, if you write the image to an existing file, you overwrite the contents of that file
469
with the contents of the image item.
•  Though you can read PCD and PCX files from the filesystem or the database, you cannot write
image files to the filesystem in PCD or PCX format (using WRITE_IMAGE_FILE).  (If you use a
restricted file type when writing images to the filesystem, Form Builder defaults the image file to
TIFF format.)
•  Writing a JPEG file from a Form Builder image item will result in loss of resolution.
WRITE_IMAGE_FILE examples
/* Built-in: WRITE_IMAGE_FILE
**
** Save the contents of an image item out to a file
** on the filesystem in a supported image format.
*/
BEGIN
WRITE_IMAGE_FILE(’output.tif’,
’TIFF’,
’emp.photo_image_data’,
maximize_compression,
original_depth);
END;
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WRITE_SOUND_FILE built-in
Description
Writes sound data from the specified sound item to the specified file.
Syntax
WRITE_SOUND_FILE(
file_name     
VARCHAR2,
file_type     
VARCHAR2,
item_id
ITEM,
  compression
NUMBER,
  sound_quality
NUMBER,
  channels
NUMBER);
WRITE_SOUND_FILE(
file_name
VARCHAR2,
 file_type
VARCHAR2,
 item_name
VARCHAR2,
 compression
NUMBER,
 sound_quality
NUMBER,
 channels
NUMBER);
Built-in Type  unrestricted
Enter Query Mode  Yes
Parameters:
file_name
The fully-qualified file name of the file to which you wish to write sound
data.
file_type
The file type for the sound data file.  Valid values are:  AU, AIFF, AIFF-C,
and WAVE.  Note:  File type is optional, but should be specified if known
for increased performance.  If omitted, Form Builder applies a default file
type:  WAVE (Microsoft Windows), AIFF-C  (Macintosh), or AU (all
others).
item_id
The unique ID Form Builder gave the sound item when you created it.
item_name
The name you gave the sound item when you created it.
compressioWhether the sound data should be compressed before Form Builder writes the data to the file.
Possible values are COMPRESSION_ON, COMPRESSION_OFF, and
ORIGINAL_SETTING (retain the default compression setting of the data).
Compression is optional:  the default value, if omitted, is
ORIGINAL_SETTING.
sound_quality
The quality of data sampling rate and depth for the sound data.  Possible
values are:  HIGHEST_SOUND_QUALITY, HIGH_SOUND_QUALITY,
MEDIUM_SOUND_QUALITY, LOW_SOUND_QUALITY,
LOWEST_SOUND_QUALITY, and ORIGINAL_QUALITY.  Sound
quality is optional:  the default value, if omitted, is
ORIGINAL_QUALITY.
channels
Whether Form Builder should write the sound data to the file as
monophonic or stereophonic.  Valid values are MONOPHONIC,
STEREOPHONIC, and ORIGINAL_SETTING (retain the default channel
471
setting of the data).  Channels is optional:  the default value, if omitted, is
ORIGINAL_SETTING.
WRITE_SOUND_FILE restrictions
•  To use the PLAY_SOUND, READ_SOUND_FILE and WRITE_SOUND_FILE built-ins to play
and/or record sound data in a file, you must create a sound item and place focus in that item before
the call to the built-ins are executed.  Although the sound item will be represented by the sound item
control at design-time, the control will not function for end users at runtime.  Therefore, you must
"hide" the sound item behind another object on the canvas so users will not see the control at
runtime.  (To place focus in an item, it cannot be assigned to a null canvas or have its Displayed
property set to No.)  For example, to call the READ_SOUND_FILE and PLAY_SOUND built-ins
from a When-Button-Pressed trigger, place focus in the "hidden" sound item by including a call to
the built-in procedure GO_ITEM in the trigger code prior to calling READ_SOUND_FILE and
PLAY_SOUND.
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Options
About Form Builder Components
Form Builder consists of the following programs, or components, which you can execute independently
from the command line or by clicking on an icon:
Form Builder
Form Builder is the design component you use to create,
compile, and run Form Builder applications.  Using Form
Builder, you can create three types of modules:  forms, menus,
and libraries.
Forms Runtime
Form operators use Forms Runtime to run the completed
application.  As an application designer, you can also use
Forms Runtime to test and debug forms during the design
stage.  Forms Runtime reads the machine-readable file created
by the Form Compiler, and executes the form.
Web Previewer
Application developers use the Web Previewer to test forms
locally as though they were being run from Forms Server in a
browser or in the Appletviewer.  Like Forms Runtime, the
Web Previewer reads the machine-readable file created by the
Form Compiler, and executes the form.
Form Compiler
Most often, you use the Form Compiler to create a machine-
readable file that Forms Runtime can execute.
Form Compiler also allows you to convert various
representations of a form.  Using Form Compiler, you can:
Convert files between binary, text, and database module
storage formats.
Insert module definitions into database tables.
Delete module definitions from the database.
Recompile application modules when porting to different
platforms.
Upgrade applications created with previous versions of
Form Builder,  SQL*Forms, and SQL*Menu.
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