form1.vb

Visual.Basic.NET实用编程百例-47.6M.zip

Imports VB = Microsoft.VisualBasic

Public Class Form1
    Inherits System.Windows.Forms.Form
    Private Declare Function GetTempFileName Lib "kernel32" Alias "GetTempFileNameA" (ByVal lpszPath As String, ByVal lpPrefixString As String, ByVal wUnique As Integer, ByVal lpTempFileName As String) As Integer

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Button1 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.Button1 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(16, 16)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(184, 23)
        Me.Label1.TabIndex = 0
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(216, 16)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "创建"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(292, 53)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.Label1)
        Me.Name = "Form1"
        Me.Text = "创建临时文件"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Function GetTempName(ByRef TmpFilePrefix As String) As String
        Dim TempFileName As New VB.Compatibility.VB6.FixedLengthString(256)
        Dim X As Integer
        Dim DriveName As String
        DriveName = "c:"
        X = GetTempFileName(DriveName, TmpFilePrefix, 0, TempFileName.Value)
        GetTempName = VB.Left(TempFileName.Value, InStr(TempFileName.Value, Chr(0)) - 1)
    End Function

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim FilePrefix As String
        Dim NewFile As New VB.Compatibility.VB6.FixedLengthString(256)
        FilePrefix = "TMP"
        NewFile.Value = GetTempName(FilePrefix)
        Label1.Text = NewFile.Value
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub
End Class