GetWindowModuleFileName

C# Signature:

[DllImport("user32.dll", SetLastError=true, CharSet=CharSet.Auto)]
static extern uint GetWindowModuleFileName(IntPtr hwnd,
   StringBuilder lpszFileName, uint cchFileNameMax);

VB Signature:

<DllImport("user32.dll", SetLastError := True, CharSet := CharSet.Auto)> _
  Private Shared Function GetWindowModuleFileName(hwnd As IntPtr, _
    lpszFileName As StringBuilder, cchFileNameMax As UInteger) As UInteger
  End Function