Closing a minimized/iconized process from C#

Question

Here\'s my issue: I need to close a process, already running, from a C# program. The problem is that the process now runs as an icon (minimized to taskbar), and unless the u

Answer 1

This should work:

[DllImport("user32.dll", CharSet=CharSet.Auto)]
private static extern IntPtr FindWindow(string className, string windowName);
[DllImport("user32.dll", CharSet=CharSet.Auto)]
private static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);

private const int WM_CLOSE = 0x10;
private const int WM_QUIT = 0x12;

public void SearchAndDestroy(string windowName) 
{
    IntPtr hWnd = FindWindow(null, windowName);
    if (hWnd == IntPtr.Zero)
        throw new Exception("Couldn't find window!");
    SendMessage(hWnd, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
}

Since some windows don't respond to WM_CLOSE, WM_QUIT might have to be sent instead. These declarations should work on both 32bit and 64bit.