易截截图软件、单文件、免安装、纯绿色、仅160KB

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


相关文档:

VC++与VB数据类型对应关系


 VC++
与VB
数据类型对应关系
  在做VC与vb程序间互相调用,需要注意两种语言不同编译器对数据类型的定义区别,此时两者数据类型的对应关系就显得十分的重要,对应关系以及声明方式如下所示。
VC++

VB

short
Integer
int
Long
long
Long
UNIT
Long
ULONG
Long
WORD
DWORDLon ......

VB句柄概念 不懂以后深入理解

最近在学习windows API的时候发现在个叫句柄的概念搞不清楚,于是查了一下现在把自己的理解写出来,后面再贴网上的介绍。句柄是一个代表窗口的正整数,当然窗口的概念在这里包含了桌面、按钮、滚动条等,这就是我最简单的理解了。
以下是网上的介绍:
                        了解句柄
在调用 ......

VB清除Cookies


Option Explicit
Private Const ERROR_CACHE_FIND_FAIL As Long = 0
Private Const ERROR_CACHE_FIND_SUCCESS As Long = 1
Private Const ERROR_FILE_NOT_FOUND As Long = 2
Private Const ERROR_ACCESS_DENIED As Long = 5
Private Const ERROR_INSUFFICIENT_BUFFER As Long = 122
Private Const MAX_PATH As Long ......

vb.net SQL数据库操作(读取、修改、删除)

        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 ......
© 2009 ej38.com All Rights Reserved. 关于E健网联系我们 | 站点地图 | 赣ICP备09004571号