VB进程间通讯 使用匿名管道原代码
Option Explicit
Private Declare Function CreatePipe Lib "kernel32" (phReadPipe As Long, phWritePipe As Long, lpPipeAttributes As SECURITY_ATTRIBUTES, ByVal nSize As Long) As Long
Private Declare Function WriteFile Lib "kernel32" (ByVal hFile As Long, lpBuffer As Any, ByVal nNumberOfBytesToWrite As Long, lpNumberOfBytesWritten As Long, ByVal lpOverlapped As Long) As Long
Private Declare Function CreateProcess Lib "kernel32" Alias "CreateProcessA" (ByVal lpApplicationName As String, ByVal lpCommandLine As String, ByVal lpProcessAttributes As Long, ByVal lpThreadAttributes As Long, ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, ByVal lpEnvironment As Long, ByVal lpCurrentDriectory As String, lpStartupInfo As STARTUPINFO, lpProcessInformation As PROCESS_INFORMATION) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function GetStdHandle Lib "kernel32" (ByVal nStdHandle As Long) As Long
Private Const INVALID_HANDLE_VALUE = -1
Private Const STARTF_USESTDHANDLES = &H100
Private Const STARTF_USESHOWWINDOW = &H1
Private Const SW_HIDE = 0
Private Const STD_ERROR_HANDLE = -12&
Private Const STD_OUTPUT_HANDLE = -11&
Private Const HIGH_PRIORITY_CLASS = &H80
Dim m_lngHWrite As Long '写管道名柄
'启动进程信息
Private Type STARTUPINFO
cb As Long
lpReserved As String
lpDesktop As String
lpTitle As String
dwX As Long
dwY A
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1、关于吉大视频:1-3集讲VB程序设计的概述4-30集讲VB基础知识,如控件的使用31-64集讲ActiveX控件、数据库等的高级编程部分。
看的过程中注意快捷键的使用和截图工具的运用,看视频时将重点作出标注。
2、由CSTR、Cstr()、string、Instr()和str()(此为深度扩展)所想到的关于总结的方法。
&nb ......
试着用了一下MindManager,使用很容易,下面是我练习着做的一个图形,希望以后会越用越熟练,做得更好!
& ......
Dim rs As ADODB.Recordset
Dim sqlstr As String
'查询
sqlstr = "select * from 表名 where 字段名 = '" & 查询的内容 & "'"
rs = VScn.Execute("" & SqlSt ......
GetAllSettings(appname,section)
GetSetting(appname,section,key[,default]) :读取注册表信息
SaveSetting appname,section,key,setting:向注册表中写入一个注册信息
deletesetting appname,section,key,setting:删除注册表信息
·appname:应用程序名,字符串类型,用户指定
·sec ......