我有一个在Vista上运行的旧版VB6可执行文件。此可执行文件包含另一个旧版MFC C ++可执行文件。

在我们早期的Vista测试中，此调用将显示典型的UAC消息，以在运行第二个可执行文件之前获得用户的许可。这不是完美的，但是可以接受的。但是，现在看来该调用已被OS完全忽略。

我该怎么做才能使此通话正常工作？

解决方案

如果在计算机上禁用了UAC，并且该调用将需要提升的特权，则对CreateProcess的调用将失败。确保已启用UAC。

此外，请按照此处的指南向程序添加UAC清单。

这里也对问题和源示例进行了很好的讨论。

在Vista下对我们来说效果很好

Private Declare Function CreateProcess Lib "kernel32" Alias "CreateProcessA" (ByVal lpApplicationName As String, ByVal lpCommandLine As String, lpProcessAttributes As Any, lpThreadAttributes As Any, ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, lpEnvironment As Any, ByVal lpCurrentDriectory As String, 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 Type PROCESS_INFORMATION
      hProcess As Long
      hThread As Long
      dwProcessId As Long
      dwThreadId As Long
End Type

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

    Dim ProcessInformation As PROCESS_INFORMATION
    Dim StartupInformation As STARTUPINFO
    Dim ReturnValue As Long
    Dim NullString As String
    Dim AppPathString As String

    StartupInformation.cb = Len(StartupInformation)

    ReturnValue = CreateProcess(NullString, AppPathString, ByVal 0&, ByVal 0&, 1&, NORMAL_PRIORITY_CLASS, ByVal 0&, NullString, StartupInformation, ProcessInformation)
    '
    'If you need to wait for the exe to finish
    '
    Do While WaitForSingleObject(ProcessInformation.hProcess, 0) <> 0
        DoEvents
    Loop