In mijn ACESS-applicatie gebruik ik -met enig succes- de functie ShellWait. Het is een functie die vrij beschikbaar is gesteld en vrij gebruikt mag worden. De bedoeling ervan is, dat je een externe applicatie aanroept en dat de aanroepende applicatie wacht tot die klaar is.
Dat werkt prima behalve als die externe applicatie Internet Explorer is. Dan gaat de code in de aanroepende applicatie gewoon verder.
Ik wil graag vanuit mijn Access-applicatie via Internet naar mijn bank om afschriften op te halen e.d. Bij terugkomst moeten die dan op een bepaalde manier verwerkt worden. Nou kan ik het wachten forceren door op een bepaalde plek een Msgebox te plaatsen, maar dat is hier even wat minder elegant. Vandaar de wens de ShellWait-functie hier in te zetten. Maar dat werkt dus niet, zo schijnt het.
Is daar een aanwijsbare reden en een oplossing voor?
Wellicht ten overvloede geef ik hier de betreffende code.
Option Compare Database
'This code was originally written by Terry Kreft.
'It is not to be altered or distributed,
'except as part of an application.
'You are free to use it in any application,
'provided the copyright notice is left unchanged.
'
'Code Courtesy of
'Terry Kreft
Private Const STARTF_USESHOWWINDOW& = &H1
Private Const NORMAL_PRIORITY_CLASS = &H20&
Private Const 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 Integer
cbReserved2 As Integer
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 WaitForSingleObject Lib "kernel32" (ByVal _
hHandle As Long, ByVal dwMilliseconds As Long) As Long
Private Declare Function CreateProcessA Lib "kernel32" (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 Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal _
hObject As Long) As Long
Public Sub ShellWait(Pathname As String, Optional windowStyle As Long)
Dim proc As PROCESS_INFORMATION
Dim start As STARTUPINFO
Dim ret As Long
' Initialize the STARTUPINFO structure:
With start
.cb = Len(start)
If Not IsMissing(windowStyle) Then
.dwFlags = STARTF_USESHOWWINDOW
.wShowWindow = windowStyle
End If
End With
' Start the shelled application:
ret& = CreateProcessA(0&, Pathname, 0&, 0&, 1&, _
NORMAL_PRIORITY_CLASS, 0&, 0&, start, proc)
' Wait for the shelled application to finish:
ret& = WaitForSingleObject(proc.hProcess, INFINITE)
ret& = CloseHandle(proc.hProcess)
End Sub
Dat werkt prima behalve als die externe applicatie Internet Explorer is. Dan gaat de code in de aanroepende applicatie gewoon verder.
Ik wil graag vanuit mijn Access-applicatie via Internet naar mijn bank om afschriften op te halen e.d. Bij terugkomst moeten die dan op een bepaalde manier verwerkt worden. Nou kan ik het wachten forceren door op een bepaalde plek een Msgebox te plaatsen, maar dat is hier even wat minder elegant. Vandaar de wens de ShellWait-functie hier in te zetten. Maar dat werkt dus niet, zo schijnt het.
Is daar een aanwijsbare reden en een oplossing voor?
Wellicht ten overvloede geef ik hier de betreffende code.
Option Compare Database
'This code was originally written by Terry Kreft.
'It is not to be altered or distributed,
'except as part of an application.
'You are free to use it in any application,
'provided the copyright notice is left unchanged.
'
'Code Courtesy of
'Terry Kreft
Private Const STARTF_USESHOWWINDOW& = &H1
Private Const NORMAL_PRIORITY_CLASS = &H20&
Private Const 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 Integer
cbReserved2 As Integer
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 WaitForSingleObject Lib "kernel32" (ByVal _
hHandle As Long, ByVal dwMilliseconds As Long) As Long
Private Declare Function CreateProcessA Lib "kernel32" (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 Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal _
hObject As Long) As Long
Public Sub ShellWait(Pathname As String, Optional windowStyle As Long)
Dim proc As PROCESS_INFORMATION
Dim start As STARTUPINFO
Dim ret As Long
' Initialize the STARTUPINFO structure:
With start
.cb = Len(start)
If Not IsMissing(windowStyle) Then
.dwFlags = STARTF_USESHOWWINDOW
.wShowWindow = windowStyle
End If
End With
' Start the shelled application:
ret& = CreateProcessA(0&, Pathname, 0&, 0&, 1&, _
NORMAL_PRIORITY_CLASS, 0&, 0&, start, proc)
' Wait for the shelled application to finish:
ret& = WaitForSingleObject(proc.hProcess, INFINITE)
ret& = CloseHandle(proc.hProcess)
End Sub