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Add-Type -Type @"
using System;
using System.Runtime.InteropServices;
using System.Text;

namespace TE
{
    public static class Win32Methods
    {
        internal const int GWL_EXSTYLE = -20;
        internal const int LWA_ALPHA = 0x2;
        internal const int LWA_COLORKEY = 0x1;

        /// <summary>
        ///     Window Styles.
        ///     The following styles can be specified wherever a window style is required. After the control has been created,
        ///     these styles cannot be modified, except as noted.
        /// </summary>
        [Flags]
        public enum WindowStyles : uint
        {
            /// <summary>The window has a thin-line border.</summary>
            WS_BORDER = 0x800000,

            /// <summary>The window has a title bar (includes the WS_BORDER style).</summary>
            WS_CAPTION = 0xc00000,

            /// <summary>
            ///     The window is a child window. A window with this style cannot have a menu bar. This style cannot be used with
            ///     the WS_POPUP style.
            /// </summary>
            WS_CHILD = 0x40000000,

            /// <summary>
            ///     Excludes the area occupied by child windows when drawing occurs within the parent window. This style is used
            ///     when creating the parent window.
            /// </summary>
            WS_CLIPCHILDREN = 0x2000000,

            /// <summary>
            ///     Clips child windows relative to each other; that is, when a particular child window receives a WM_PAINT message,
            ///     the WS_CLIPSIBLINGS style clips all other overlapping child windows out of the region of the child window to be
            ///     updated.
            ///     If WS_CLIPSIBLINGS is not specified and child windows overlap, it is possible, when drawing within the client area
            ///     of a child window, to draw within the client area of a neighboring child window.
            /// </summary>
            WS_CLIPSIBLINGS = 0x4000000,

            /// <summary>
            ///     The window is initially disabled. A disabled window cannot receive input from the user. To change this after a
            ///     window has been created, use the EnableWindow function.
            /// </summary>
            WS_DISABLED = 0x8000000,

            /// <summary>
            ///     The window has a border of a style typically used with dialog boxes. A window with this style cannot have a
            ///     title bar.
            /// </summary>
            WS_DLGFRAME = 0x400000,

            /// <summary>
            ///     The window is the first control of a group of controls. The group consists of this first control and all controls
            ///     defined after it, up to the next control with the WS_GROUP style.
            ///     The first control in each group usually has the WS_TABSTOP style so that the user can move from group to group. The
            ///     user can subsequently change the keyboard focus from one control in the group to the next control in the group by
            ///     using the direction keys.
            ///     You can turn this style on and off to change dialog box navigation. To change this style after a window has been
            ///     created, use the SetWindowLong function.
            /// </summary>
            WS_GROUP = 0x20000,

            /// <summary>The window has a horizontal scroll bar.</summary>
            WS_HSCROLL = 0x100000,

            /// <summary>The window is initially maximized.</summary>
            WS_MAXIMIZE = 0x1000000,

            /// <summary>
            ///     The window has a maximize button. Cannot be combined with the WS_EX_CONTEXTHELP style. The WS_SYSMENU style
            ///     must also be specified.
            /// </summary>
            WS_MAXIMIZEBOX = 0x10000,

            /// <summary>The window is initially minimized.</summary>
            WS_MINIMIZE = 0x20000000,

            /// <summary>
            ///     The window has a minimize button. Cannot be combined with the WS_EX_CONTEXTHELP style. The WS_SYSMENU style
            ///     must also be specified.
            /// </summary>
            WS_MINIMIZEBOX = 0x20000,

            /// <summary>The window is an overlapped window. An overlapped window has a title bar and a border.</summary>
            WS_OVERLAPPED = 0x0,

            /// <summary>The window is an overlapped window.</summary>
            WS_OVERLAPPEDWINDOW =
                WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_SIZEFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX,

            /// <summary>The window is a pop-up window. This style cannot be used with the WS_CHILD style.</summary>
            WS_POPUP = 0x80000000u,

            /// <summary>
            ///     The window is a pop-up window. The WS_CAPTION and WS_POPUPWINDOW styles must be combined to make the window
            ///     menu visible.
            /// </summary>
            WS_POPUPWINDOW = WS_POPUP | WS_BORDER | WS_SYSMENU,

            /// <summary>The window has a sizing border.</summary>
            WS_SIZEFRAME = 0x40000,

            /// <summary>The window has a window menu on its title bar. The WS_CAPTION style must also be specified.</summary>
            WS_SYSMENU = 0x80000,

            /// <summary>
            ///     The window is a control that can receive the keyboard focus when the user presses the TAB key.
            ///     Pressing the TAB key changes the keyboard focus to the next control with the WS_TABSTOP style.
            ///     You can turn this style on and off to change dialog box navigation. To change this style after a window has been
            ///     created, use the SetWindowLong function.
            ///     For user-created windows and modeless dialogs to work with tab stops, alter the message loop to call the
            ///     IsDialogMessage function.
            /// </summary>
            WS_TABSTOP = 0x10000,

            /// <summary>
            ///     The window is initially visible. This style can be turned on and off by using the ShowWindow or SetWindowPos
            ///     function.
            /// </summary>
            WS_VISIBLE = 0x10000000,

            /// <summary>The window has a vertical scroll bar.</summary>
            WS_VSCROLL = 0x200000,

            WS_THICKFRAME = 0x00040000
        }

        [Flags]
        public enum WindowStylesEx : uint
        {
            /// <summary>
            ///     Specifies that a window created with this style accepts drag-drop files.
            /// </summary>
            WS_EX_ACCEPTFILES = 0x00000010,

            /// <summary>
            ///     Forces a top-level window onto the taskbar when the window is visible.
            /// </summary>
            WS_EX_APPWINDOW = 0x00040000,

            /// <summary>
            ///     Specifies that a window has a border with a sunken edge.
            /// </summary>
            WS_EX_CLIENTEDGE = 0x00000200,

            /// <summary>
            ///     Windows XP: Paints all descendants of a window in bottom-to-top painting order using double-buffering. For more
            ///     information, see Remarks. This cannot be used if the window has a class style of either CS_OWNDC or CS_CLASSDC.
            /// </summary>
            WS_EX_COMPOSITED = 0x02000000,

            /// <summary>
            ///     Includes a question mark in the title bar of the window. When the user clicks the question mark, the cursor changes
            ///     to a question mark with a pointer. If the user then clicks a child window, the child receives a WM_HELP message.
            ///     The child window should pass the message to the parent window procedure, which should call the WinHelp function
            ///     using the HELP_WM_HELP command. The Help application displays a pop-up window that typically contains help for the
            ///     child window.
            ///     WS_EX_CONTEXTHELP cannot be used with the WS_MAXIMIZEBOX or WS_MINIMIZEBOX styles.
            /// </summary>
            WS_EX_CONTEXTHELP = 0x00000400,

            /// <summary>
            ///     The window itself contains child windows that should take part in dialog box navigation. If this style is
            ///     specified, the dialog manager recurses into children of this window when performing navigation operations such as
            ///     handling the TAB key, an arrow key, or a keyboard mnemonic.
            /// </summary>
            WS_EX_CONTROLPARENT = 0x00010000,

            /// <summary>
            ///     Creates a window that has a double border; the window can, optionally, be created with a title bar by specifying
            ///     the WS_CAPTION style in the dwStyle parameter.
            /// </summary>
            WS_EX_DLGMODALFRAME = 0x00000001,

            /// <summary>
            ///     Windows 2000/XP: Creates a layered window. Note that this cannot be used for child windows. Also, this cannot be
            ///     used if the window has a class style of either CS_OWNDC or CS_CLASSDC.
            /// </summary>
            WS_EX_LAYERED = 0x00080000,

            /// <summary>
            ///     Arabic and Hebrew versions of Windows 98/Me, Windows 2000/XP: Creates a window whose horizontal origin is on the
            ///     right edge. Increasing horizontal values advance to the left.
            /// </summary>
            WS_EX_LAYOUTRTL = 0x00400000,

            /// <summary>
            ///     Creates a window that has generic left-aligned properties. This is the default.
            /// </summary>
            WS_EX_LEFT = 0x00000000,

            /// <summary>
            ///     If the shell language is Hebrew, Arabic, or another language that supports reading order alignment, the vertical
            ///     scroll bar (if present) is to the left of the client area. For other languages, the style is ignored.
            /// </summary>
            WS_EX_LEFTSCROLLBAR = 0x00004000,

            /// <summary>
            ///     The window text is displayed using left-to-right reading-order properties. This is the default.
            /// </summary>
            WS_EX_LTRREADING = 0x00000000,

            /// <summary>
            ///     Creates a multiple-document interface (MDI) child window.
            /// </summary>
            WS_EX_MDICHILD = 0x00000040,

            /// <summary>
            ///     Windows 2000/XP: A top-level window created with this style does not become the foreground window when the user
            ///     clicks it. The system does not bring this window to the foreground when the user minimizes or closes the foreground
            ///     window.
            ///     To activate the window, use the SetActiveWindow or SetForegroundWindow function.
            ///     The window does not appear on the taskbar by default. To force the window to appear on the taskbar, use the
            ///     WS_EX_APPWINDOW style.
            /// </summary>
            WS_EX_NOACTIVATE = 0x08000000,

            /// <summary>
            ///     Windows 2000/XP: A window created with this style does not pass its window layout to its child windows.
            /// </summary>
            WS_EX_NOINHERITLAYOUT = 0x00100000,

            /// <summary>
            ///     Specifies that a child window created with this style does not send the WM_PARENTNOTIFY message to its parent
            ///     window when it is created or destroyed.
            /// </summary>
            WS_EX_NOPARENTNOTIFY = 0x00000004,

            /// <summary>
            ///     Combines the WS_EX_CLIENTEDGE and WS_EX_WINDOWEDGE styles.
            /// </summary>
            WS_EX_OVERLAPPEDWINDOW = WS_EX_WINDOWEDGE | WS_EX_CLIENTEDGE,

            /// <summary>
            ///     Combines the WS_EX_WINDOWEDGE, WS_EX_TOOLWINDOW, and WS_EX_TOPMOST styles.
            /// </summary>
            WS_EX_PALETTEWINDOW = WS_EX_WINDOWEDGE | WS_EX_TOOLWINDOW | WS_EX_TOPMOST,

            /// <summary>
            ///     The window has generic "right-aligned" properties. This depends on the window class. This style has an effect only
            ///     if the shell language is Hebrew, Arabic, or another language that supports reading-order alignment; otherwise, the
            ///     style is ignored.
            ///     Using the WS_EX_RIGHT style for static or edit controls has the same effect as using the SS_RIGHT or ES_RIGHT
            ///     style, respectively. Using this style with button controls has the same effect as using BS_RIGHT and BS_RIGHTBUTTON
            ///     styles.
            /// </summary>
            WS_EX_RIGHT = 0x00001000,

            /// <summary>
            ///     Vertical scroll bar (if present) is to the right of the client area. This is the default.
            /// </summary>
            WS_EX_RIGHTSCROLLBAR = 0x00000000,

            /// <summary>
            ///     If the shell language is Hebrew, Arabic, or another language that supports reading-order alignment, the window text
            ///     is displayed using right-to-left reading-order properties. For other languages, the style is ignored.
            /// </summary>
            WS_EX_RTLREADING = 0x00002000,

            /// <summary>
            ///     Creates a window with a three-dimensional border style intended to be used for items that do not accept user input.
            /// </summary>
            WS_EX_STATICEDGE = 0x00020000,

            /// <summary>
            ///     Creates a tool window; that is, a window intended to be used as a floating toolbar. A tool window has a title bar
            ///     that is shorter than a normal title bar, and the window title is drawn using a smaller font. A tool window does not
            ///     appear in the taskbar or in the dialog that appears when the user presses ALT+TAB. If a tool window has a system
            ///     menu, its icon is not displayed on the title bar. However, you can display the system menu by right-clicking or by
            ///     typing ALT+SPACE.
            /// </summary>
            WS_EX_TOOLWINDOW = 0x00000080,

            /// <summary>
            ///     Specifies that a window created with this style should be placed above all non-topmost windows and should stay
            ///     above them, even when the window is deactivated. To add or remove this style, use the SetWindowPos function.
            /// </summary>
            WS_EX_TOPMOST = 0x00000008,

            /// <summary>
            ///     Specifies that a window created with this style should not be painted until siblings beneath the window (that were
            ///     created by the same thread) have been painted. The window appears transparent because the bits of underlying
            ///     sibling windows have already been painted.
            ///     To achieve transparency without these restrictions, use the SetWindowRgn function.
            /// </summary>
            WS_EX_TRANSPARENT = 0x00000020,

            /// <summary>
            ///     Specifies that a window has a border with a raised edge.
            /// </summary>
            WS_EX_WINDOWEDGE = 0x00000100
        }

        [DllImport("user32.dll")]
        internal static extern bool SetLayeredWindowAttributes(IntPtr hwnd, uint crKey, byte bAlpha, uint dwFlags);

        [DllImport("user32.dll")]
        internal static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

        [DllImport("user32.dll")]
        internal static extern int GetWindowLong(IntPtr hWnd, int nIndex);

        public static void SetWindowTransparent(IntPtr hWnd)
        {
            // Set layered ex style
            SetWindowLong(hWnd, GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) ^ (int)WindowStylesEx.WS_EX_LAYERED);
            SetLayeredWindowAttributes(hWnd, 0, 230, LWA_ALPHA);
        }

        public static void SetWindowCaptionStyle(IntPtr hWnd)
        {
            // TODO: set correct style
            SetWindowLong(hWnd, GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) ^ (int)WindowStylesEx.WS_EX_LAYERED);
            SetLayeredWindowAttributes(hWnd, 0, 230, LWA_ALPHA);
        }
    }
}

"@
$hwnd = (Get-Process -Name SwingCatalyst).MainWindowHandle
[TE.Win32Methods]::SetWindowCaptionStyle($hwnd)