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#
# Usage: powershell <path>\IdentifyConsoleWindow.ps1
#
# This script determines whether the process has a console attached, whether
# that console has a non-NULL window (e.g. HWND), and whether the window is on
# the current window station.
#
$signature = @'
[DllImport("kernel32.dll", SetLastError=true)]
public static extern IntPtr GetConsoleWindow();
[DllImport("kernel32.dll", CharSet=CharSet.Auto, SetLastError=true)]
public static extern bool SetConsoleTitle(String title);
[DllImport("user32.dll", CharSet=CharSet.Auto, SetLastError=true)]
public static extern int GetWindowText(IntPtr hWnd,
System.Text.StringBuilder lpString,
int nMaxCount);
'@
$WinAPI = Add-Type -MemberDefinition $signature `
-Name WinAPI -Namespace IdentifyConsoleWindow -PassThru
if (!$WinAPI::SetConsoleTitle("ConsoleWindowScript")) {
echo "error: could not change console title -- is a console attached?"
exit 1
} else {
echo "note: successfully set console title to ""ConsoleWindowScript""."
}
$hwnd = $WinAPI::GetConsoleWindow()
if ($hwnd -eq 0) {
echo "note: GetConsoleWindow returned NULL."
} else {
echo "note: GetConsoleWindow returned 0x$($hwnd.ToString("X"))."
$sb = New-Object System.Text.StringBuilder -ArgumentList 4096
if ($WinAPI::GetWindowText($hwnd, $sb, $sb.Capacity)) {
$title = $sb.ToString()
echo "note: GetWindowText returned ""${title}""."
if ($title -eq "ConsoleWindowScript") {
echo "success!"
} else {
echo "error: expected to see ""ConsoleWindowScript""."
echo " (Perhaps the console window is on a different window station?)"
}
} else {
echo "error: GetWindowText could not read the window title."
echo " (Perhaps the console window is on a different window station?)"
}
}
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