using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Drawing;

namespace ICSharpCode.WinFormsUI.Controls
{
 internal class NativeMethods
 {
 internal const int WM_PAINT = 0xF;

 internal const int VK_LBUTTON = 0x1;
 internal const int VK_RBUTTON = 0x2;

 internal const int SB_CTL = 2;
 internal const int SIF_ALL = (0x0001 | 0x0002 | 0x0004 | 0x0010);

 internal const int WHEEL_DELTA = 120;

 // basically it's constant now, but could be changed later by MS
 internal const int WHEEL_MAX_DELTA = 120;

 [DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
 public static extern bool GetScrollInfo(HandleRef hWnd, int fnBar, NativeMethods.Scrollinfo si);

 [DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
 public static extern int SetScrollInfo(HandleRef hWnd, int fnBar, NativeMethods.Scrollinfo si, bool redraw);

 private const int TCM_FIRST = 0x1300;
 public const int TCM_GETITEMRECT = (TCM_FIRST + 10);

 public static readonly IntPtr TRUE = new IntPtr(1);

 [StructLayout(LayoutKind.Sequential)]
 public struct PAINTSTRUCT
 {
 internal IntPtr hdc;
 internal int fErase;
 internal RECT rcPaint;
 internal int fRestore;
 internal int fIncUpdate;
 internal int Reserved1;
 internal int Reserved2;
 internal int Reserved3;
 internal int Reserved4;
 internal int Reserved5;
 internal int Reserved6;
 internal int Reserved7;
 internal int Reserved8;
 }

 [StructLayout(LayoutKind.Sequential)]
 public struct RECT
 {
 internal RECT(int X, int Y, int Width, int Height)
 {
 this.Left = X;
 this.Top = Y;
 this.Right = Width;
 this.Bottom = Height;
 }
 internal int Left;
 internal int Top;
 internal int Right;
 internal int Bottom;
 }

 [StructLayout(LayoutKind.Sequential)]
 public class Scrollinfo
 {
 public int fMask;
 public int nMin;
 public int nMax;
 public int nPage;
 public int nPos;
 public int cbSize;
 public int nTrackPos;

 public Scrollinfo()
 {
 cbSize = Marshal.SizeOf(typeof(Scrollinfo));
 }

 public Scrollinfo(int mask, int min, int max, int page, int pos) : this()
 {
 fMask = mask;
 nMin = min;
 nMax = max;
 nPage = page;
 nPos = pos;
 }
 }

 [DllImport("user32.dll")]
 public static extern IntPtr FindWindowEx(
 IntPtr hwndParent,
 IntPtr hwndChildAfter,
 string lpszClass,
 string lpszWindow);

 [DllImport("user32.dll")]
 public static extern IntPtr BeginPaint(IntPtr hWnd, ref PAINTSTRUCT ps);

 [DllImport("user32.dll")]
 [return: MarshalAs(UnmanagedType.Bool)]
 public static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT ps);

 [DllImport("user32.dll")]
 public static extern short GetKeyState(int nVirtKey);

 [DllImport("user32.dll")]
 public static extern IntPtr SendMessage(
 IntPtr hWnd, int Msg, int wParam, ref RECT lParam);

 [DllImport("user32.dll")]
 [return: MarshalAs(UnmanagedType.Bool)]
 public static extern bool GetCursorPos(ref Point lpPoint);

 [DllImport("user32.dll")]
 public extern static int OffsetRect(ref RECT lpRect, int x, int y);

 [DllImport("user32.dll")]
 [return: MarshalAs(UnmanagedType.Bool)]
 public static extern bool PtInRect([In] ref RECT lprc, Point pt);

 [DllImport("user32.dll")]
 [return: MarshalAs(UnmanagedType.Bool)]
 public static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);

 [DllImport("user32.dll")]
 [return: MarshalAs(UnmanagedType.Bool)]
 public static extern bool GetClientRect(IntPtr hWnd, ref RECT r);

 [DllImport("User32.dll", CharSet = CharSet.Auto)]
 public static extern bool IsWindowVisible(IntPtr hwnd);

 [DllImport("user32.dll")]
 public static extern int SendMessage(IntPtr wnd,int msg,bool param,int lparam);
 }
}