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pro_vb thread: This time its Windows API..


Message #1 by "Linda Hay" <linda_hay2002@y...> on Tue, 10 Dec 2002 05:00:21
Hi All.

I'm back for a second time & this time it is for a question to do with 
Windows API functions. By the way please answer my earlier query as well.

I'm calling the following function through VB to run a process, but I need 
to keep the Window that pops up through the process, to be minimized.

Please help me on this too.

Thanks.

Cheers for all.

Linda.

Option Explicit

Private Const NORMAL_PRIORITY_CLASS = &H20&
Private Const WAIT_INFINITE = -1&

Private 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 Long
cbReserved2 As Long
lpReserved2 As Long
hStdInput As Long
hStdOutput As Long
hStdError As Long
End Type

Private Type PROCESS_INFORMATION
hProcess As Long
hThread As Long
dwProcessId As Long
dwThreadID As Long
End Type

Private Declare Function CreateProcess Lib "kernel32" _
Alias "CreateProcessA" _
(ByVal lpAppName 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 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 Sub RunProcess(cmdline As String)
Dim proc As PROCESS_INFORMATION
Dim start As STARTUPINFO

start.cb = Len(start)

Call CreateProcess(0&, cmdline, 0&, 0&, 1&, _
NORMAL_PRIORITY_CLASS, 0&, 0&, _
start, proc)

Call WaitForSingleObject(proc.hProcess, WAIT_INFINITE)
Call CloseHandle(proc.hProcess)
Call CloseHandle(proc.hThread)

End Sub

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