隔膜式计量泵jmⅩ:vb 杂记
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1.TextBox得到焦点 控件名.SetFocus 2.二维数组的长度(行、列) Dim tmpArray(100, 20) As String
MsgBox "行长度: " + str(UBound(tmpArray, 1))
MsgBox "列长度: " + str(UBound(tmpArray, 2)) 3.多维 Dim tmpArray(100, 20, 7) As String
MsgBox "行长度: " + str(UBound(tmpArray, 1))
MsgBox "列长度: " + str(UBound(tmpArray, 2))
MsgBox "列长度: " + str(UBound(tmpArray, 3)) 4.判断文件是否存在 Private Declare Function GetDriveType Lib "kernel32" Alias "GetDriveTypeA" (ByVal nDrive As String) As Long ''
'' 判断文件是否存在
'' GetDriveType返回盘符类型,返回值:0-未知的磁盘类型;1-无效的磁盘;2-可移动磁盘;3-固定磁盘;4-网络磁盘;5-光驱;6-RAM
''
Private Function FileExists(filepath As String, filename As String)
FileExists = False
If GetDriveType(filepath) <> 5 Then
If Dir(filepath & filename) <> "" Then
FileExists = True
End If
End If
End Function 5.删除文件 kill filepath & filename 6.如何在FileListbox控件中显示指定类型的文件 指定文件夹路径:FileListbox1.Path = App.Path 可以用Pattern来显示指定的文件类型:FileListbox1.Pattern = "*.ini"。 7.窗口最大化最小化按钮无效 直接设置MaxButton和MinButton属性为false --------------------------------------互相学习--------------------------------------
MsgBox "行长度: " + str(UBound(tmpArray, 1))
MsgBox "列长度: " + str(UBound(tmpArray, 2)) 3.多维 Dim tmpArray(100, 20, 7) As String
MsgBox "行长度: " + str(UBound(tmpArray, 1))
MsgBox "列长度: " + str(UBound(tmpArray, 2))
MsgBox "列长度: " + str(UBound(tmpArray, 3)) 4.判断文件是否存在 Private Declare Function GetDriveType Lib "kernel32" Alias "GetDriveTypeA" (ByVal nDrive As String) As Long ''
'' 判断文件是否存在
'' GetDriveType返回盘符类型,返回值:0-未知的磁盘类型;1-无效的磁盘;2-可移动磁盘;3-固定磁盘;4-网络磁盘;5-光驱;6-RAM
''
Private Function FileExists(filepath As String, filename As String)
FileExists = False
If GetDriveType(filepath) <> 5 Then
If Dir(filepath & filename) <> "" Then
FileExists = True
End If
End If
End Function 5.删除文件 kill filepath & filename 6.如何在FileListbox控件中显示指定类型的文件 指定文件夹路径:FileListbox1.Path = App.Path 可以用Pattern来显示指定的文件类型:FileListbox1.Pattern = "*.ini"。 7.窗口最大化最小化按钮无效 直接设置MaxButton和MinButton属性为false --------------------------------------互相学习--------------------------------------