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Embedded Visual Basic Windows Ce And Pocket Pc Mobile Applications [Electronic resources] - نسخه متنی

Chris Tacke; Timothy Bassett

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Table of Contents• Index

eMbedded Visual Basic®: Windows® CE and Pocket PC Mobile Applications
By Publisher: Sams Publishing
Pub Date: November 07, 2001
ISBN: 0-672-32277-3
Pages: 416

This book is an in-depth exploration into eVB's inherent features, and how to use them to solve likely mobile application programming tasks. After reading the book the reader will be able to write applications tackling a wide array of business problems for Windows CE-powered devices, both customized and for PocketPC and Handheld PC products. This book will help ease the transition into the language, and provide a reference for even more experienced developers.
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eMbedded Visual Basic®: Windows® CE and Pocket PC Mobile Applications

By
Chris Tacke, Timothy Bassett

Table of Contentsappendix A.
Control Reference

The File Control Object Model


The following tables outline the Object Model for the File Control. This control is included in MSCEFile.dll.

Table A.24. File Control Methods

Method

Return

Description

Close
Nothing
Closes an open file.
Get
Nothing
Reads binary data into a Variant variable. Usually used for data written with the Put method.
Input
String
Reads a specified number of characters from an open text file.
InputB
Byte array
Reads a specified number of bytes from an open binary file.
InputFields
Variant array
Reads a specified number of fields from an open sequential, comma-delimited file.
LineInputString
String
Reads the next single line (delimited by vbCr or vbCrLf) from an open sequential text file.
LinePrint
Nothing
Appends a line of text to an open sequential text file. Lineprint also terminates the line with vbCrLf.
Open
Nothing
Opens a file in Input, Output, Append, Random or Binary mode.
Put
Nothing
Writes a variant variable to disk as binary data.
WriteFields
Nothing
Writes numeric or text data to an open sequential file.

Table A.25. File Control Properties

Property

Return

Description

Attr
FileModeEnum
Gets the mode in which a file was opened. Can be confusing, as it does

not return the FileAttrEnum for the open file.

EOF
Boolean
Returns True when the end of a file is reached.
Loc
Long
Gets the current read/write position of an open file.
LOF
Long
Gets the length of a file in bytes.
Name
String
Gets the logical name of the File control as set in the Properties window.
Parent
Object
Gets a reference to the File control's parent object, such as its containing form.
Seek
Long
Sets and returns the current read/write position in an open file. Seek always returns Loc + 1, except for when a file is first opened.
Tag
String
Sets or gets a string that can be used to hold any additional information the programmer wants to store.


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