用函数function 即可 private function Add(byval x as integer,byval y as integer) as integer Add=x+y end function
sub 是过程,不返回值 function是函数,可以返回值
我想是我问的问题错误了,我的意思是像DOS那样执行后屏幕返回1那是不是程序的返回值
我的源码如下无窗口,启动是sub main() 你说那样启动得了吗 sub main()main=trueend sub
模块: Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredaccess&, ByVal bInherithandle&, ByVal dwProcessid&) As LongDeclare Function GetExitCodeProcess Lib "kernel32" (ByVal hProcess As Long, lpexitcode As Long) As LongConst STILL_ACTIVE = &H103 Const PROCESS_QUERY_INFORMATION = &H400 程序: hShell = Shell("调用的程序.exe", vbNormalFocus) hProc = OpenProcess(PROCESS_QUERY_INFORMATION, False, hShell) Do GetExitCodeProcess hProc, lExit DoEvents Loop While lExit <> STILL_ACTIVE msgbox"程序结束" '因为使用循环,我认为效率低,下面这个效率高,更好 Option ExplicitPrivate Type STARTUPINFO cb As Long lpReserved As String lpDesktop As String lpTitle As String dwX As Long dwY As Long dwXSize As Long dwYSize As Long dwXCountChars As Long dwYCountChars As Long dwFillAttribute As Long dwFlags As Long wShowWindow As Integer cbReserved2 As Integer lpReserved2 As Long hStdInput As Long hStdOutput As Long hStdError As Long End TypePrivate Type PROCESS_INFORMATION hProcess As Long hThread As Long dwProcessID As Long dwThreadID As Long End TypePrivate Declare Function dcWaitForSingleObject Lib "kernel32" Alias "WaitForSingleObject" (ByVal hHandle As Long, ByVal dwMilliseconds As Long) As LongPrivate Declare Function dcCreateProcess Lib "kernel32" Alias "CreateProcessA" (ByVal _ lpApplicationName As Long, 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 lpCurrentDirectory As Long, _ lpStartupInfo As STARTUPINFO, lpProcessInformation As _ PROCESS_INFORMATION) As LongPrivate Declare Function dcCloseHandle Lib "kernel32" Alias "CloseHandle" (ByVal hObject As Long) As LongPrivate Declare Function dcGetExitCodeProcess Lib "kernel32" Alias "GetExitCodeProcess" (ByVal hProcess As Long, lpExitCode As Long) As LongPrivate Const NORMAL_PRIORITY_CLASS = &H20& Private Const INFINITE = -1& Public Function ExecCmd(cmdline$) Dim proc As PROCESS_INFORMATION Dim start As STARTUPINFO Dim ret As Long
On Error GoTo errExit
' Initialize the STARTUPINFO structure: start.cb = Len(start)
' Start the shelled application: ret = dcCreateProcess(0&, cmdline$, 0&, 0&, 1&, _ NORMAL_PRIORITY_CLASS, 0&, 0&, start, proc)
' Wait for the shelled application to finish: ret = dcWaitForSingleObject(proc.hProcess, INFINITE) If ret = WAIT_TIMEOUT Then 'After 15 min program may be hung? Call dcTerminateProcess(proc.hProcess, enAllFail) End If Call dcGetExitCodeProcess(proc.hProcess, ret&) Call dcCloseHandle(proc.hProcess) ExecCmd = ret& Exit Function errExit: 'Error handler here
private function Add(byval x as integer,byval y as integer) as integer
Add=x+y
end function
function是函数,可以返回值
你说那样启动得了吗
sub main()main=trueend sub
Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredaccess&, ByVal bInherithandle&, ByVal dwProcessid&) As LongDeclare Function GetExitCodeProcess Lib "kernel32" (ByVal hProcess As Long, lpexitcode As Long) As LongConst STILL_ACTIVE = &H103
Const PROCESS_QUERY_INFORMATION = &H400
程序:
hShell = Shell("调用的程序.exe", vbNormalFocus) hProc = OpenProcess(PROCESS_QUERY_INFORMATION, False, hShell)
Do
GetExitCodeProcess hProc, lExit
DoEvents
Loop While lExit <> STILL_ACTIVE
msgbox"程序结束"
'因为使用循环,我认为效率低,下面这个效率高,更好
Option ExplicitPrivate Type STARTUPINFO
cb As Long
lpReserved As String
lpDesktop As String
lpTitle As String
dwX As Long
dwY As Long
dwXSize As Long
dwYSize As Long
dwXCountChars As Long
dwYCountChars As Long
dwFillAttribute As Long
dwFlags As Long
wShowWindow As Integer
cbReserved2 As Integer
lpReserved2 As Long
hStdInput As Long
hStdOutput As Long
hStdError As Long
End TypePrivate Type PROCESS_INFORMATION
hProcess As Long
hThread As Long
dwProcessID As Long
dwThreadID As Long
End TypePrivate Declare Function dcWaitForSingleObject Lib "kernel32" Alias "WaitForSingleObject" (ByVal hHandle As Long, ByVal dwMilliseconds As Long) As LongPrivate Declare Function dcCreateProcess Lib "kernel32" Alias "CreateProcessA" (ByVal _
lpApplicationName As Long, 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 lpCurrentDirectory As Long, _
lpStartupInfo As STARTUPINFO, lpProcessInformation As _
PROCESS_INFORMATION) As LongPrivate Declare Function dcCloseHandle Lib "kernel32" Alias "CloseHandle" (ByVal hObject As Long) As LongPrivate Declare Function dcGetExitCodeProcess Lib "kernel32" Alias "GetExitCodeProcess" (ByVal hProcess As Long, lpExitCode As Long) As LongPrivate Const NORMAL_PRIORITY_CLASS = &H20&
Private Const INFINITE = -1&
Public Function ExecCmd(cmdline$)
Dim proc As PROCESS_INFORMATION
Dim start As STARTUPINFO
Dim ret As Long
On Error GoTo errExit
' Initialize the STARTUPINFO structure:
start.cb = Len(start)
' Start the shelled application:
ret = dcCreateProcess(0&, cmdline$, 0&, 0&, 1&, _
NORMAL_PRIORITY_CLASS, 0&, 0&, start, proc)
' Wait for the shelled application to finish:
ret = dcWaitForSingleObject(proc.hProcess, INFINITE)
If ret = WAIT_TIMEOUT Then
'After 15 min program may be hung?
Call dcTerminateProcess(proc.hProcess, enAllFail)
End If
Call dcGetExitCodeProcess(proc.hProcess, ret&)
Call dcCloseHandle(proc.hProcess)
ExecCmd = ret&
Exit Function
errExit:
'Error handler here
End Function
'这个效率高,而且能够得到程序返回值