{

internal delegate bool CallBackPtr(IntPtr hwnd, int lParam);

[StructLayout(LayoutKind.Sequential)]

internal struct WindowsRect

{

internal int Left;

internal int Top;

internal int Right;

internal int Bottom;

internal WindowsRect(int x)

{

Left = x;

Top = x;

Right = x;

Bottom = x;

}

}

[StructLayout(LayoutKind.Sequential)]

internal struct WindowsMargins

{

internal int LeftWidth;

internal int RightWidth;

internal int TopHeight;

internal int BottomHeight;

internal WindowsMargins(int left, int right, int top, int bottom)

{

LeftWidth = left;

RightWidth = right;

TopHeight = top;

BottomHeight = bottom;

}

}

[StructLayout(LayoutKind.Sequential)]

internal struct BitmapInfo

{

public Int32 biSize;

public Int32 biWidth;

public Int32 biHeight;

public Int16 biPlanes;

public Int16 biBitCount;

public Int32 biCompression;

public Int32 biSizeImage;

public Int32 biXPelsPerMeter;

public Int32 biYPelsPerMeter;

public Int32 biClrUsed;

public Int32 biClrImportant;

}

[StructLayout(LayoutKind.Sequential)]

internal struct IconInfoStruct

{

internal bool fIcon;

internal Int32 xHotspot;

internal Int32 yHotspot;

internal IntPtr hbmMask;

internal IntPtr hbmColor;

}

[StructLayout(LayoutKind.Sequential)]

internal struct CursorInfoStruct

{

internal Int32 cbSize;

internal Int32 flags;

internal IntPtr hCursor;

internal PointStruct ptScreenPos;

}

[StructLayout(LayoutKind.Sequential)]

internal struct PointStruct

{

internal int X;

internal int Y;

}

internal enum DwmWindowAttribute

{

NonClientRenderingEnabled = 1,

NonClientRenderingPolicy,

TransitionsForceDisabled,

AllowNonClientPaint,

CaptionButtonBounds,

NonClientRtlLayout,

ForceIconicRepresentation,

Flip3DPolicy,

ExtendedFrameBounds,

HasIconicBitmap,

DisallowPeek,

ExcludedFromPeek,

Last

}

internal static class WindowsApi

{

// Safe method of calling dwmapi.dll, for versions of Windows lower than Vista

internal static int DwmGetWindowAttribute(IntPtr hWnd, DwmWindowAttribute dwAttribute, ref WindowsRect pvAttribute, int cbAttribute)

{

IntPtr dwmDll = LoadLibrary("dwmapi.dll");

if (dwmDll == IntPtr.Zero)

return Marshal.GetLastWin32Error();

IntPtr dwmFunction = GetProcAddress(dwmDll, "DwmGetWindowAttribute");

if (dwmFunction == IntPtr.Zero)

return Marshal.GetLastWin32Error();

var call = (DwmGetWindowAttributeDelegate)Marshal.GetDelegateForFunctionPointer(dwmFunction, typeof(DwmGetWindowAttributeDelegate));

int result = call(hWnd, dwAttribute, ref pvAttribute, cbAttribute);

FreeLibrary(dwmDll);

return result;

}

internal struct DWM_COLORIZATION_PARAMS

{

public uint clrColor;

public uint clrAfterGlow;

public uint nIntensity;

public uint clrAfterGlowBalance;

public uint clrBlurBalance;

public uint clrGlassReflectionIntensity;

public bool fOpaque;

}

[DllImport("user32.dll")]

internal static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("user32.dll")]

internal static extern bool SetForegroundWindow(IntPtr hWnd);

[DllImport("user32.dll")]

internal static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

[DllImport("user32.dll")]

internal static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int width, int height, uint uFlags);

[DllImport("user32.dll")]

internal static extern bool GetWindowRect(IntPtr hWnd, ref WindowsRect rect);

[DllImport("user32.dll")]

internal static extern long GetWindowLong(IntPtr hWnd, int nIndex);

[DllImport("user32.dll")]

internal static extern IntPtr GetWindow(IntPtr hWnd, uint uCmd);

[DllImport("user32.dll")]

internal static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);

[DllImport("user32.dll")]

internal static extern int GetWindowTextLength(IntPtr hWnd);

[DllImport("user32.dll")]

internal static extern IntPtr GetForegroundWindow();

[DllImport("user32.dll")]

public static extern bool GetCursorInfo(out CursorInfoStruct pci);

[DllImport("user32.dll")]

public static extern IntPtr DestroyIcon(IntPtr hIcon);

[DllImport("user32.dll")]

public static extern IntPtr CopyIcon(IntPtr hIcon);

[DllImport("user32.dll")]

public static extern bool GetIconInfo(IntPtr hIcon, out IconInfoStruct piconinfo);

[DllImport("user32.dll")]

internal static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vlc);

[DllImport("user32.dll")]

internal static extern bool UnregisterHotKey(IntPtr hWnd, int id);

[DllImport("user32.dll")]

internal static extern bool SystemParametersInfo(uint uiAction, uint uiParam, ref int pvParam, uint fWinIni);

[DllImport("user32.dll")]

internal static extern bool SystemParametersInfo(uint uiAction, uint uiParam, uint pvParam, uint fWinIni);

[DllImport("user32.dll", SetLastError = true)]

[return: MarshalAs(UnmanagedType.Bool)]

internal static extern bool SystemParametersInfo(uint uiAction, uint uiParam, bool pvParam, uint fWinIni);

[DllImport("user32.dll")]

internal static extern bool RedrawWindow(IntPtr hWnd, IntPtr lpRectUpdate, IntPtr hrgnUpdate, UInt32 flags);

[DllImport("dwmapi.dll")]

internal static extern int DwmIsCompositionEnabled(out bool enabled);

[DllImport("dwmapi.dll", EntryPoint = "#127", PreserveSig = false)]

internal static extern void DwmGetColorizationParameters(out DWM_COLORIZATION_PARAMS parameters);

[DllImport("dwmapi.dll", EntryPoint = "#131", PreserveSig = false)]

internal static extern void DwmSetColorizationParameters(ref DWM_COLORIZATION_PARAMS parameters, bool unknown);

[DllImport("gdi32.dll")]

internal static extern bool BitBlt(IntPtr hdcDest, int xDest, int yDest, int wDest, int hDest, IntPtr hdcSource, int xSrc, int ySrc, CopyPixelOperation rop);

[DllImport("gdi32.dll")]

internal static extern IntPtr CreateDC(string lpszDriver, string lpszDevice, string lpszOutput, int lpInitData);

[DllImport("gdi32.dll")]

internal static extern IntPtr DeleteDC(IntPtr hDc);

[DllImport("gdi32.dll")]

internal static extern int SaveDC(IntPtr hdc);

[DllImport("gdi32.dll")]

internal static extern IntPtr DeleteObject(IntPtr hDc);

[DllImport("gdi32.dll")]

internal static extern IntPtr CreateCompatibleBitmap(IntPtr hdc, int nWidth, int nHeight);

[DllImport("gdi32.dll")]

internal static extern IntPtr CreateCompatibleDC(IntPtr hdc);

[DllImport("gdi32.dll")]

internal static extern IntPtr SelectObject(IntPtr hdc, IntPtr bmp);

[DllImport("kernel32.dll", SetLastError = true)]

private static extern bool FreeLibrary(IntPtr hModule);

[DllImport("kernel32.dll", SetLastError = true)]

private static extern IntPtr LoadLibrary(string dllToLoad);

[DllImport("kernel32.dll", SetLastError = true)]

private static extern IntPtr GetProcAddress(IntPtr hModule, string procedureName);

[UnmanagedFunctionPointer(CallingConvention.Cdecl)]

private delegate int DwmGetWindowAttributeDelegate(IntPtr hWnd, DwmWindowAttribute dwAttribute, ref WindowsRect pvAttribute, int cbAttribute);

}

}