如何建立控制台窗口以及同窗口交互 |
| 作者：佚名 来源：不详 更新：2006-8-25 21:05:35 错误报告 我要投稿 |
如何建立控制台窗口
以及让用户在其中输入字符同计算机进行交互对话。
首先在选VB菜单中的 Project | Module 项向工程文件中加入一个模块，然后在
这个Module中加入以下代码：
Option Explicit
Private Declare Function AllocConsole Lib "kernel32" () As Long
Private Declare Function FreeConsole Lib "kernel32" () As Long
Private Declare Function GetStdHandle Lib "kernel32" _
(ByVal nStdHandle As Long) As Long
Private Declare Function ReadConsole Lib "kernel32" Alias _
"ReadConsoleA" (ByVal hConsoleInput As Long, _
ByVal lpBuffer As String, ByVal nNumberOfCharsToRead As Long, _
lpNumberOfCharsRead As Long, lpReserved As Any) As Long
Private Declare Function SetConsoleMode Lib "kernel32" (ByVal _
hConsoleOutput As Long, dwMode As Long) As Long
Private Declare Function SetConsoleTextAttribute Lib _
"kernel32" (ByVal hConsoleOutput As Long, ByVal _
wAttributes As Long) As Long
Private Declare Function SetConsoleTitle Lib "kernel32" Alias _
"SetConsoleTitleA" (ByVal lpConsoleTitle As String) As Long
Private Declare Function WriteConsole Lib "kernel32" Alias _
"WriteConsoleA" (ByVal hConsoleOutput As Long, _
ByVal lpBuffer As Any, ByVal nNumberOfCharsToWrite As Long, _
lpNumberOfCharsWritten As Long, lpReserved As Any) As Long
Private Const STD_INPUT_HANDLE = -10&
Private Const STD_OUTPUT_HANDLE = -11&
Private Const STD_ERROR_HANDLE = -12&
Private Const FOREGROUND_BLUE = &H1
Private Const FOREGROUND_GREEN = &H2
Private Const FOREGROUND_RED = &H4
Private Const FOREGROUND_INTENSITY = &H8
Private Const BACKGROUND_BLUE = &H10
Private Const BACKGROUND_GREEN = &H20
Private Const BACKGROUND_RED = &H40
Private Const BACKGROUND_INTENSITY = &H80
'For SetConsoleMode (input)
Private Const ENABLE_LINE_INPUT = &H2
Private Const ENABLE_ECHO_INPUT = &H4
Private Const ENABLE_MOUSE_INPUT = &H10
Private Const ENABLE_PROCESSED_INPUT = &H1
Private Const ENABLE_WINDOW_INPUT = &H8
'For SetConsoleMode (output)
Private Const ENABLE_PROCESSED_OUTPUT = &H1
Private Const ENABLE_WRAP_AT_EOL_OUTPUT = &H2
'''''G L O B A L S'''''''''''''''''''''''''''''''''''
Private hConsoleIn As Long ' The console's input handle
Private hConsoleOut As Long ' The console's output handle
Private hConsoleErr As Long ' The console's error handle
'''''M A I N'''''''''''''''''''''''''''''''''''''''''
Private Sub Main()
Dim szUserInput As String
AllocConsole '建立一个控制台窗口
SetConsoleTitle "VB Console Example" '设置窗口标题
'获得控制窗口的句柄
hConsoleIn = GetStdHandle(STD_INPUT_HANDLE)
hConsoleOut = GetStdHandle(STD_OUTPUT_HANDLE)
hConsoleErr = GetStdHandle(STD_ERROR_HANDLE)
SetConsoleTextAttribute hConsoleOut, _
FOREGROUND_RED Or FOREGROUND_GREEN _
Or FOREGROUND_BLUE Or FOREGROUND_INTENSITY _
Or BACKGROUND_BLUE
ConsolePrint "VB Console Example" & vbCrLf
SetConsoleTextAttribute hConsoleOut, _
FOREGROUND_RED Or FOREGROUND_GREEN _
Or FOREGROUND_BLUE
ConsolePrint "Please Enter Your Name Here--> "
'获得用户名
szUserInput = ConsoleRead()
If Not szUserInput = vbNullString Then
ConsolePrint "Hello, " & szUserInput & "!" & vbCrLf
Else
ConsolePrint "Hello,But who are you?" & vbCrLf
End If
ConsolePrint "Press Enter To Close The Console"
Call ConsoleRead
FreeConsole ' Destroy the console
End Sub
Private Sub ConsolePrint(szOut As String)
WriteConsole hConsoleOut, szOut, Len(szOut), vbNull, vbNull
End Sub
Private Function ConsoleRead() As String
Dim sUserInput As String * 256
Call ReadConsole(hConsoleIn, sUserInput, Len(sUserInput), vbNull, vbNull)
'Trim off the NULL charactors and the CRLF.
ConsoleRead = Left$(sUserInput, InStr(sUserInput, Chr$(0)) - 3)
End Function
选VB菜单中的 Project | Project1 Properties项，将Startup Object改变为Sub Main，然后
运行程序，程序就会弹出一个控制台窗口，用户可以根据控制台窗口中的提示信息与程序进行交互
对话。
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