How to check whether another app is minimized or not?

Question

How can I check whether another application is minimized or not? For instance in a loop like this:

foreach(Process p in processes)
{
  // Does a process have a window?
  // If so, is it minimized, normal, or maximized
}

Answer 1

[DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);

    private struct WINDOWPLACEMENT {
        public int length;
        public int flags;
        public int showCmd;
        public System.Drawing.Point ptMinPosition;
        public System.Drawing.Point ptMaxPosition;
        public System.Drawing.Rectangle rcNormalPosition;
    }

if (p.MainWindowHandle != IntPtr.Zero) {
    if (p.MainWindowTitle.Contains("Notepad")) {
        WINDOWPLACEMENT placement = new WINDOWPLACEMENT();
        GetWindowPlacement(p.MainWindowHandle, ref placement);
        switch (placement.showCmd) {
           case 1:
             Console.WriteLine("Normal");
             break;
           case 2:
             Console.WriteLine("Minimized");
             break;
           case 3:
             Console.WriteLine("Maximized");
             break;
        }
    }                   
}

Answer 2

There is no such thing as a minimized "application." The best alternative would be to check whether the application's Main Window is Iconic (minimized).

IsIconic can be used to check for the iconic state of a window. It will return 1 if a window is minimized. You can call this with process.MainWindowHandle.

Answer 3

If a window is minimized (in Windows Forms at least) both Location.X and Location.Y values are -32000

Answer 4

you can use isZoomed for maximized and isIconic for minimized by injecting user32 dll

[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool IsIconic(IntPtr hWnd);
[DllImport("user32.dll")]
static extern bool IsZoomed(IntPtr hWnd);