小弟刚学VBA，有些问题想请高手指教，感谢。
程式码如下(http://www.programmer-club.com.tw/ShowSameTitleN/vb/28660.html):
Private Declare Function OpenProcess Lib "kernel32" _
(ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, _
ByVal dwProcessId As Long) As Long
Private Declare Function WaitForSingleObject Lib "kernel32" _
(ByVal hHandle As Long, ByVal dwMilliseconds As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" _
(ByVal hObject As Long) As Long
Private Declare Function GetExitCodeProcess Lib "kernel32" _
(ByVal hProcess As Long, lpExitCode As Long) As Long
Private Declare Function TerminateProcess Lib "kernel32" _
(ByVal hProcess As Long, ByVal uExitCode As Long) As Long
Private Declare Function GetForegroundWindow Lib "user32" () As Long
Private Declare Function IsWindow Lib "user32" _
(ByVal hwnd As Long) As Long
Const PROCESS_QUERY_INFORMATION = &H400
Const SYNCHRONIZE = &H100000
Const STILL_ALIVE = &H103
Const INFINITE = &HFFFF
Private ExitCode As Long
Private hProcess As Long
Private isDone As Long
Private Sub Command1_Click()
Dim pid As Long
pid = Shell("C:\Project1.exe", vbNormalFocus)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION + SYNCHRONIZE, 0, pid)
isDone = False
Do
Call GetExitCodeProcess(hProcess, ExitCode)
DoEvents
Loop While ExitCode = STILL_ALIVE
Call CloseHandle(hProcess)
isDone = True
Sheet1.Cells(1, 1) = "done"
End Sub
Q1:程式内的isDone是什么用途??为何一开始宣告它(Private isDone As Long)然后
在之后又isDone = False 和 isDone = True? 用意为何?
Q2:GetExitCodeProcess指的是中止上面执行中(或是执行完)的程式("C:\Project1.exe")吗??
那定义ExitCode = STILL_ALIVE是什么意思?为何不是STILL_ACTIVE
(https://msdn.microsoft.com/en-us/library/windows/desktop/ms683189(v=vs.85).aspx?
Q3:DoEvents是暂停执行，以便让作业系统可以处理其它的事件。加了这个是为了可以执行
下面的程式Sheet1.Cells(1,1) = "done"吗??那为何不是加在 Call CloseHandle (hProcess)
之下??
Q4:CloseHandle指的是Closes an open object handle.是不是一定都要加?不加会怎么样?
感谢~

你不是刚学 为什么要看这种变态的code。

工作需要

推变态的code VBA很熟API不懂正常 VB一般不会用到这些我用api一般都是把变量换成我定义的就完工这CASE你有3个地方要改成你的定义1. Private Sub Command1_Click() 改成你的执行模式2. pid = Shell("C:\Project1.exe", vbNormalFocus)改执行档案路径与程式名称3. Sheet1.Cells(1, 1) = "done" 这行可以改成呼叫你后续我在使用API时会习惯建一个模组叫API 然后COPY过去不过只COPY到1.以前 1.以后是要引用到自己写的程序当中第一次用API 重点在怎用他

这段程式应该是启动project1.exe,并等他跑完,然后在Cell里显示已跑完吧??老实说我看不出isDone有啥用途DoEvents并不能说是"暂停",而是让程式去处理其他的讯息因为没有看到其他的Code无法知道isDone有何用处,不过宣告成全域或模组级,可能是当控制权由DoEvents转移到其他地方时,那个副程式可以借由isDone知道project1.exe跑完了没至于为啥是STILL_ALIVE不是STILL_ACTIVE??因为如果是C,直接include正确的header就可以得到STILL_ACTIVE=0x103但是这是VBA,常数你要自己宣告好,所以名称也由你自己定,跟C的header里不一样名字也没差我回答的好像好乱啊XD

Q1:isDone=确定Q2: STILL_ALIVE=仍然活着Q3:执行do loop时，没有加 DoEvents程式会显示无回应Q4:hook

感谢~