VBA/Excel/Access/Word/Language Basics/MsgBox

Материал из VB Эксперт
Версия от 12:46, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Содержание

Adding a Help Button to a Message Box: use the vbMsgBoxHelpButton constant

 
Sub help()
    MsgBox("Do you want to delete this workbook?", vbYesNo _
        + vbCritical + vbDefaultButton2 + vbMsgBoxHelpButton, _
        "Delete Workbook")
End Sub



Add the Information icon

 
Sub infoSub()
    msgBox "Welcome to VBA", vbYesNoCancel + vbInformation, "VBA Message Box"
End Sub



After you have placed the return value into a variable, you can easily introduce logic into your program to respond to the user"s selection

 
Sub MessageBoxAnswer()
    Dim intAnswer As Integer
    intAnswer = msgBox("Are You Sure?", vbYesNoCancel + vbQuestion, _
          "Please Respond")
    Select Case intAnswer
        Case vbYes
            msgBox "I"m Glad You are Sure!!"
        Case vbNo
            msgBox "Why Aren"t You Sure??"
        Case vbCancel
            msgBox "You Coward! You Bailed Out!!"
    End Select
End Sub



A single statement splits over four lines.

 
Sub single1()
    MsgBox "Can"t find " & UCase(SHORTCUTMENUFILE) & ThisWorkbook.Path & vbCrLf & vbCrLf & _
      "You may need to reinstall BudgetMan", vbCritical, APPNAME
End Sub



Buttons and Icons in the MsgBox Function

 
 
Constant               Value     Description
vbOKOnly               0         Displays OK button only.
vbOKCancel             1         Displays OK and Cancel buttons.
vbAbortRetryIgnore     2         Displays Abort, Retry, and Ignore buttons.
vbYesNoCancel          3         Displays Yes, No, and Cancel buttons.
vbYesNo                4         Displays Yes and No buttons.
vbRetryCancel          5         Displays Retry and Cancel buttons.
vbCritical             16        Displays Critical Message icon. 
vbQuestion             32        Displays Warning Query icon.
vbExclamation          48        Displays Warning Message icon.
vbInformation          64        Displays Information Message icon.
vbDefaultButton1       0         First button is default.
vbDefaultButton2       256       Second button is default.
vbDefaultButton3       512       Third button is default.
vbDefaultButton4       768       Fourth button is default.
vbApplicationModal     0         Application modal; the user must respond to the message box before continuing work in the current application.
vbSystemModal          4096      System modal; all applications are suspended until the user responds to the message box.
vbMsgBoxHelpButton     16384     Add Help button to the message box.
VbMsgBoxSetForeground  65536     Specify the message box window as the foreground window.
vbMsgBoxRight          524288    Text is right aligned.
vbMsgBoxRtlReading     1048576   Specify that text should appear as right-to-left reading on Hebrew and Arabic systems.



Call MsgBox function by using its parameter name

 
Sub MsgBoxParameterName()
    Dim myTitle As String
    myTitle = "title"
    Dim questin As String
    question = "question"
    Dim myButtons As Integer
    myButtons = vbYesNo + vbQuestion + vbDefaultButton2
    MsgBox Title:=myTitle, prompt:=question, Buttons:=myButtons
End Sub



Check MsgBox result

 
"Button Selected      Constant      Value
"OK                   vbOK          1
"Cancel               vbCancel      2
"Abort                vbAbort       3
"Retry                vbRetry       4
"Ignore               vbIgnore      5
"Yes                  vbYes         6
"No                   vbNo          7

Sub MsgBoxDemo()
    Dim Answer As Long
    
    Answer = MsgBox("Message", vbQuestion + vbOKCancel, "Error")
    
      If Answer = vbOK Then
        MsgBox "OK"
      End If
      If Answer = vbCancel Then
        MsgBox "Cancel"
      End If
End Sub



determines which button was pressed.

 
Sub messageBoxTest()
 Dim intButtonPressed As Integer
 intButtonPressed = msgBox("Welcome to VBA", vbYesNo, "Message Box Test")
 If intButtonPressed = vbYes Then
    msgBox "Yes was selected"
  Else
     msgBox "No was selected"
   End If
End Sub



Each of the available buttons will produce an integer result.

 
Constant     Value     Description
vbOK         1         OK
vbCancel     2         Cancel
vbAbort      3         Abort
vbRetry      4         Retry
vbIgnore     5         Ignore
vbYes        6         Yes
vbNo         7         No



Getting a response from a message box with Select Case

 
  Sub GetAnswer()
      Dim Ans As Integer
      Ans = MsgBox("Continue?", vbYesNo)
      Select Case Ans
          Case vbYes
  "       ...[code if Ans is Yes]...
          Case vbNo
  "       ...[code if Ans is No]...
      End Select
  End Sub



Keep the message box visible while the user works with other open applications

 
Sub modelMsg()
    MsgBox "How are you?", vbOKOnly + vbSystemModal, "System Modal"
End Sub



MsgBox"s third parameter is the message box"s title. Its fourth and fifth parameters are the Help file and context ID

 
Sub m()
    msgBox "This is a Message", vbInformation, "This is a Title"
End Sub



MsgBox "Welcome to VBA", vbYesNoCancel, "VBA Message Box"

 
Sub yesNoSub()
    msgBox "Welcome to VBA", vbYesNoCancel, "VBA Message Box"
End Sub



MsgBox with parameter Name: title:=myTitle, prompt:=question, buttons:=myButtons, helpfile:= "HelpX.hlp",context:=55

 
Sub msgBoxPa()
    Dim myTitle As String
    myTitle = "title"
    Dim questin As String
    question = "question"
    Dim myButtons As Integer
    myButtons = vbYesNo + vbQuestion + vbDefaultButton2
    MsgBox Title:=myTitle, prompt:=question, Buttons:=myButtons, HelpFile:="HelpX.hlp", Context:=55
End Sub



MsgBox with three parameters

 
Sub MsgYesNo2()
    Dim question As String
    Dim myButtons As Integer
    Dim myTitle As String
    question = "Do you want to open a new report?"
    myButtons = vbYesNo + vbQuestion + vbDefaultButton2
    myTitle = "New report"
    MsgBox question, myButtons, myTitle
End Sub



Ok To Overwrite

 
Function OkToOverwrite(sFullName As String) As Boolean 
    Dim sMsg As String 
    Dim nButtons As Long 
    Dim nResponse As Long 
    Dim bOverwrite As Boolean 
    bOverwrite = False 
    sMsg = sFullName & " already exists.  Do you want to overwrite it?" 
    nButtons = vbYesNoCancel + vbExclamation + vbDefaultButton2 
    nResponse = MsgBox(sMsg, nButtons, "Overwrite File?") 
    If nResponse = vbYes Then 
        bOverwrite = True 
    End If 
    OkToOverwrite = bOverwrite 
End Function



Pass single parameter to MsgBox

 
Sub Test1()
  MsgBox "Please make sure that the printer is switched on"
End Sub



Returning Values from the MsgBox Function

 
Sub MsgYesNo3()
    Dim question As String
    Dim myButtons As Integer
    Dim myTitle As String
    Dim myChoice As Integer
    question = "Do you want to open a new report?"
    myButtons = vbYesNo + vbQuestion + vbDefaultButton2
    myTitle = "New report"
    myChoice = MsgBox(question, myButtons, myTitle)
    MsgBox myChoice
End Sub



Save the return value from MsgBox to a variable

 
Sub Informant2()
    Dim myPrompt As String
    Dim town As String
    Const myTitle = "Enter data"
    myPrompt = "Place of birth:" & Chr(13) & "(e.g., Boston, Great Falls, etc.)"
    
    town = InputBox(myPrompt, myTitle)
    MsgBox "You were born in " & town & ".", , "Your response"
End Sub



Set default button for MsgBox

 
Sub defaultSub()
    MsgBox "Do you want to proceed?", vbYesNo + vbQuestion + vbDefaultButton2
End Sub



Specifying a Help File for a Message Box

 
Sub helpFile()
    Dim lngQ As Long
    lngQ = MsgBox("Do you want to delete this workbook?", vbYesNo _
        + vbCritical + vbDefaultButton2 + vbMsgBoxHelpButton, _
        "Delete Workbook", "c:\Help.chm", 1012)
End Sub



Specifying a Title for a Message Box

 
Sub title()
    MsgBox("Do you want to delete this workbook?", vbYesNo _
        + vbCritical + vbDefaultButton2, "Delete Workbook 12.39")
End Sub



The message box displays Yes, No, and Cancel buttons

 
Sub MessageBoxFunction()
    Dim intAnswer As Integer
    intAnswer = msgBox("Are You Sure?", vbYesNoCancel + vbQuestion, _
           "Please Respond")
End Sub



The MsgBox buttons argument"s settings

 
Default button settings
vbDefaultButton1      0      The first button is default
vbDefaultButton2      256      The second button is default
vbDefaultButton3      512      The third button is default
vbDefaultButton4      768      The fourth button is default
Message box modality
vbApplicationModal      0      The user must respond to the message before continuing to work in the current application.
vbSystemModal      4096      On Win16 systems, this constant is used to prevent the user from interacting with any other window until he or she dismisses the message box. On Win32 systems, this constant works like the vbApplicationModal constant (see above) with the following exception: The message box always remains on top of any other programs you may have running.
Other MsgBox display settings
vbMsgBoxHelpButton      16384      Adds the Help button to the message box
vbMsgBoxSetForeground      65536      Specifies the message box window as the foreground window
vbMsgBoxRight      524288      Text is right aligned
vbMsgBoxRtlReading      1048576      Text appears as right-to-left reading on Hebrew and Arabic systems
Sub buttonMsg()
    MsgBox "How are you?", vbOKOnly + vbApplicationModal, "Application Modal"
End Sub



Use Chr() function to format MsgBox

 
Sub charMsgBox()
    MsgBox "A." & Chr(13) & "B ""C"" D" & Chr(13) & "E." & Chr(13) & "F."
End Sub



use the MsgBox function result without using a variable

 
  Sub GetAnswer2()
      If MsgBox("Continue?", vbYesNo) = vbYes Then
  "       ...[code if Yes is clicked]...
      Else
  "       ...[code if Yes is not clicked]...
      End If
  End Sub



Use & to link messages

 
Sub MyMessage()
    MsgBox "A." & Chr(13) _
    & "B ""C"" E" & Chr(13) _
    & "F." & Chr(13) _
    & "G."
End Sub



Using the MsgBox Function: MsgBox (prompt [, buttons] [, title], [, helpfile, context])

 
Sub msgSub()
    MsgBox "The procedure is complete."
End Sub
"Formatting the Message Box
Sub msgBoxQuotation()
    MsgBox "A ""B"" C."
End Sub



Using the MsgBox Function with Arguments

 
Sub MsgYesNo()
    Dim question As String
    Dim myButtons As Integer
    question = "Do you want to open a new report?"
    myButtons = vbYesNo + vbQuestion + vbDefaultButton2
    MsgBox question, myButtons
End Sub



Using the Select Case Statement to check the MsgBox button clicked

 
Sub TestButtons()
       Dim question As String
       Dim bts As Integer
       Dim myTitle As String
       Dim myButton As Integer
       question = "Do you want to preview the report now?"
       bts = vbYesNoCancel + vbQuestion + vbDefaultButton1
       myTitle = "Report"
       myButton = MsgBox(prompt:=question, Buttons:=bts, Title:=myTitle)
       Select Case myButton
          Case 6
              MsgBox "You can review the report now."
          Case 7
              MsgBox "You can review the report later."
          Case Else
              MsgBox "You pressed Cancel."
       End Select
End Sub