Microsoft KB Archive/145742

= File Structure and Contents of .VCX and .SCX Files =

Article ID: 145742

Article Last Modified on 9/30/2003

-

APPLIES TO


 * Microsoft Visual FoxPro 3.0 Standard Edition
 * Microsoft Visual FoxPro 3.0b Standard Edition

-



This article was previously published under Q145742



SUMMARY
You may sometimes need to change the contents of a .vcx or .scx record to allow a form to run correctly or to modify a Class library to allow editing. This article explains the file structure of the table that contains the .vcx or .scx information and gives a description of the usage and examples of the field contents.



MORE INFORMATION
Field Name: Platform

Type: C(8)

Description: VCX/SCX - Used to associate a Specific platform for an object. In single-platform tables, every object has one record per platform. Cross- platform objects have one record per platform with the same UniqueID and are distinguished by the Platform Field. For records that do not relate to a specific class or object, the Platform field contains the string "COMMENT". The header record (record #1) has Platform="COMMENT".

Example: "WINDOWS" Field Name: UniqueID

Type: C(10)

Description: VCX/SCX - Unique ID code for individual classes and objects. Related cross-platform records share the same UniqueID value. For records that do not relate to a specific class or object, the UniqueID field contains information that describes the type of record. The header record (record #1) has Unique="Class". SCX - Same as VCX except the header record (record #1) has uniqueID="Screen".

Example: "_QVW1055YU" Field Name: TimeStamp

Type: N(10)

Description: VCX/SCX - This timestamp code relates directly to the date and time the object symbols were created or last generated. The TimeStamp field for all records associated with a class are updated whenever the class is changed. For records that do not relate to a specific class or object, TimeStamp=0.

Example: 495748740 Field Name: Class

Type: Memo

Description: VCX/SCX - Defines which class is used to create the subclass of the class or object member.

Example: "MyCommandButton" Field Name: ClassLoc

Type: Memo

Description: VCX/SCX - Relative path and filename of the class defined in the Class field. If the Class field specifies a Visual FoxPro built-in base class or the Class name specified is located in the same VCX, then the ClassLoc field is empty.

Example: "Tsbase.vcx" Field Name: BaseClass

Type: Memo

Description: VCX/SCX - Stores the name of the base class, or top-most parent class in the class tree hierarchy, of class or object member.

Example: "CommandButton" Field Name: ObjName

Type: Memo

Description: VCX/SCX - Defines the name of class or object member.

Example: "CmdCancel" Field Name: Parent

Type: Memo

Description: VCX/SCX - References the immediate parent container object of which the object is a member. If an object member is not a child member of a container, the Parent field is empty.

Example: "Form1" Field type: Properties

Type: Memo

Description: VCX/SCX - Lists properties and their values that override the values defined in the parent class from which a class or object member is derived.

Example: "Width = 69" "Height = 10" Field Name: Protected

Type: Memo

Description: VCX/SCX - Lists all properties and methods that are marked as protected members for a class.

Example: "dUpdated" Field Name: Methods

Type: Memo

Description: VCX/SCX - Contains all snippet code of a class or object member.

Example: "Procedure Click"

"ThisForm.Release

"EndProcedure" Field Name: ObjCode

Type: Memo

Description: VCX/SCX - Stores the compiled p-code of source code stored in the Methods field. The ObjCode is empty if the Methods field is empty.

Example: None Field Name: Ole

Type: Memo

Description: VCX/SCX - Stores binary information for OLE class and object members.

Example: None Field Name: Ole2

Type: Memo

Description: VCX/SCX - Stores binary information for OLE class and object members.

Example: None Field Name: Reservedl

type: Memo

Description: VCX - Class tag field used to indicate the start of a class definition by storing the string "Class". If a record is not the start of a class definition, the Reservedl field is empty. SCX - Not used.

Example: None Field Name: Reserved2

Type: Memo

Description: VCX/SCX - Stores the number of records associated with a class including the class or container record. This field only contains a value for the first record of a class definition. If a class does not contain any object members, the Reserved2 field for the record that starts the class definition contains a 1. For records that are not the start of a class definition, the Reserved2 field is empty.

Example: 2 Field Name: Reserved3

Type: Memo

Description: VCX - Lists all user-defined member names of a class with the member description separated by a single space character. One member is stored with its description per memo line. Standard property names are listed without a preceding character, while array properties are preceded with an asterisk (*) character. SCX - Not used.

Example: "^Myarray(100)" Field Name: Reserved4

Type: Memo

Description: VCX - Stores the relative path and filename of the bitmap (BMP) of a custom class icon. SCX - Not used.

Example: "c:\vfp\samples\bitmaps\cancel.bmp" Field Name: Reserved5

Type: Memo

Description: VCX - Stores the relative path and filename of the bitmap (.bmp file) for a custom Project Manager and Class Browser class icon. SCX - Not used.

Example: "c:\vfp\samples\bitmaps\cancel.bmp" Field Name: Reserved6

Type: Memo

Description: VCX/SCX - Stores scalemode (Pixels/Foxels)Pixels of a class or object.

Example: "Pixels" Field Name: Reserved7

Type: Memo

Description: VCX/SCX - Stores class description that can be modified within the Class Info dialog of the Class Designer.

Example: "This class releases the form." Field Name: Reserved8

Type: Memo

Description: VCX/SCX- For classes, stores the relative path and file name of the #INCLUDE file for all code snippets. For object members, stores the string "NOINIT" if an object has NoInit check box marked in the Class Info dialog of the Class Designer.

Example: "NOINIT" Field Name: User

Type: Memo

Description: VCX/SCX - Open for user-defined purposes.

Example: None

Additional query words: VFoxWin

Keywords: KB145742

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.