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Section B.7. Message Box Constants

B 7 Message Box Constants

Except for vbMsgBoxHelpButton, any one of the following constants can be used with the buttons parameters of the MsgBox function to determine which buttons appear in the dialog. The vbMsgBoxHelpButton constant can be ORed with the button constant to add a Help button to provide context-sensitive help; this, however, also requires that arguments be supplied to the function's helpfile and context parameters.

Constant

Value

Description

vbAbortRetryIgnore

2

Abort, Retry, and Ignore buttons

vbMsgBoxHelpButton

16384

Help button

vbOKCancel

1

OK and Cancel buttons

vbOKOnly

0

OK button; this is the default value

vbRetryCancel

5

Retry and Cancel buttons

vbYesNo

4

Yes and No buttons

vbYesNoCancel

3

Yes, No, and Cancel buttons

You can determine which of these buttons is the default (that is, it appears selected and will be chosen if the user presses the Enter key) by logically ORing any one of the following constants with any other constants passed to the buttons parameter. The selected button is designated by its position on the dialog. By default, the first button appears selected.

Constant

Value

Description

vbDefaultButton1

0

First button is the default

vbDefaultButton2

256

Second button is the default

vbDefaultButton3

512

Third button is the default

vbDefaultButton4

768

Fourth (Help) button is the default

The MsgBox function also allows you to designate an icon that appears in the message box to indicate the message type. You can logically OR any one of the message box icon constants with the other values that you pass as arguments to the buttons parameter, as in the following code fragment:

iResult = MsgBox("Is this OK?", vbYesNo Or vbQuestion Or _
 vbApplicationModal, "Delete File")

Constant

Value

Description

vbCritical

16

Critical (stop sign) icon

vbExclamation

48

Exclamation (caution) icon

vbInformation

64

Information icon

vbQuestion

32

Question mark icon

You can also determine the modality of the message box by ORing one of the following constants with any other constants passed to the buttons parameter:

Constant

Value

Description

vbApplicationModal

0

The focus cannot move to another interface object in the application until the dialog is closed.

vbSystemModal

4096

The focus cannot move elsewhere in the system until the dialog is closed.

Three miscellaneous constants can be used to control the behavior of the dialog. Once again, they must be logically ORed with any other constants passed to the buttons parameter.

Constant

Value

Description

vbMsgBoxRight

524288

Right aligns text

vbMsgBoxRtlReading

1048576

On Hebrew and Arabic systems, specifies that text should appear from right to left

vbMsgBoxSetForeground

65536

Makes the message box the foreground window

Finally, the value returned by the MsgBox function can be compared with the following constants to determine which button was selected. Note that there is no need for a vbHelp constant, since selecting the Help button, if it is displayed, keeps the message box open but opens a help window to display context-sensitive help information.

Constant

Value

Description

vbAbort

3

The Abort button

vbCancel

2

The Cancel button

vbIgnore

5

The Ignore button

vbNo

7

The No button

vbOK

1

The OK button

vbRetry

4

The Retry button

vbYes

6

The Yes button

Part I: The Basics

Introduction

Program Structure

Data Types and Variables

Error Handling and Debugging

VBScript with Active Server Pages

Programming Outlook Forms

Windows Script Host 5.6

VBScript with Internet Explorer

Windows Script Components

Part II: Reference

Part III: Appendixes

Appendix A. Language Elements by Category

Appendix B. VBScript Constants

Appendix C. Operators

Appendix E. The Script Encoder

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Vbscript in a Nutshell
VBScript in a Nutshell, 2nd Edition
ISBN: 0596004885
EAN: 2147483647
Year: 2003
Pages: 335
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