WINFROM下带有自动滚动条截图代码,CSharp代码库,德仔网

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【CSharp】 WINFROM下带有自动滚动条截图

作者:zgke / 发布于2014/7/29/ 1009

WINFROM下带有自动滚动条截图根据滚动条的长度进行截图，发图复制到一起使用PANEL 如果是窗体请把窗体放到PANEL里要不会多出标题来


	using System;
	using System.Drawing;
	using System.Drawing.Imaging;
	using System.Reflection;
	using System.Runtime.InteropServices;
	using System.Windows.Forms;

	namespace ZgkeLib
	{
	 public class ControlImage
	 {
	 #region API
	 [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
	 public struct SCROLLINFO
	 {
	 public uint cbSize;
	 public uint fMask;
	 public int nMin;
	 public int nMax;
	 public uint nPage;
	 public int nPos;
	 public int nTrackPos;
	 }
	 public enum ScrollBarInfoFlags
	 {
	 SIF_RANGE = 0x0001,
	 SIF_PAGE = 0x0002,
	 SIF_POS = 0x0004,
	 SIF_DISABLENOSCROLL = 0x0008,
	 SIF_TRACKPOS = 0x0010,
	 SIF_ALL = (SIF_RANGE | SIF_PAGE | SIF_POS | SIF_TRACKPOS)
	 }
	 public enum ScrollBarRequests
	 {
	 SB_LINEUP = 0,
	 SB_LINELEFT = 0,
	 SB_LINEDOWN = 1,
	 SB_LINERIGHT = 1,
	 SB_PAGEUP = 2,
	 SB_PAGELEFT = 2,
	 SB_PAGEDOWN = 3,
	 SB_PAGERIGHT = 3,
	 SB_THUMBPOSITION = 4,
	 SB_THUMBTRACK = 5,
	 SB_TOP = 6,
	 SB_LEFT = 6,
	 SB_BOTTOM = 7,
	 SB_RIGHT = 7,
	 SB_ENDSCROLL = 8
	 }
	 [DllImport("user32.dll", CharSet = CharSet.Auto)]
	 public static extern int GetScrollInfo(IntPtr hwnd, int bar, ref SCROLLINFO si);
	 [DllImport("user32")]
	 public static extern int SetScrollPos(IntPtr hWnd, int nBar, int nPos, bool Rush);
	 [DllImport("user32.dll", CharSet = CharSet.Auto)]
	 public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);
	 #endregion

	
	 /// <summary>
	 /// 获取图形
	 /// </summary>
	 /// <param name="MyControl"></param>
	 /// <returns></returns>
	 public static Bitmap GetImage(Control MyControl)
	 {
	 Point ScrollMaxInfo=GetScrollPoint(MyControl);
	 Size ControlMaxSize = GetControlSize(MyControl, ScrollMaxInfo);

	 Bitmap ControlImage = new Bitmap(ControlMaxSize.Width, ControlMaxSize.Height);
	 Graphics MainGraphics = Graphics.FromImage(ControlImage);
	 Bitmap TempImage = new Bitmap(MyControl.Width-16, MyControl.Height-16);

	 int StepWidth = GetScrollNumb(MyControl.Width-16, ScrollMaxInfo.X);
	 int StepHeight = GetScrollNumb(MyControl.Height-16, ScrollMaxInfo.Y);

	 int LogWidth = 0;
	 int LogHeigh = 0;
	 MoveBar(0, 0, MyControl);
	
	 for (int i = 0; i != StepWidth; i++)
	 {
	 MoveBar(1, 0, MyControl);
	 LogHeigh = 0;
	 for (int z = 0; z != StepHeight; z++)
	 {
	 MyControl.DrawToBitmap(TempImage, new Rectangle(0, 0, MyControl.Width-16, MyControl.Height-16));
	 MainGraphics.DrawImage(TempImage, LogWidth, LogHeigh);
	 MoveBar(1, MyControl.Height-16+LogHeigh, MyControl);
	 LogHeigh=GetScrollPoint(1, MyControl);
	 }
	 MoveBar(0, MyControl.Width-16 + LogWidth, MyControl);
	 LogWidth = GetScrollPoint(0, MyControl);
	 }
	 MainGraphics.Dispose();
	 TempImage.Dispose();
	 return ControlImage;
	 }
	 /// <summary>
	 /// 获取目前滚动条位置
	 /// </summary>
	 /// <param name="Bar"></param>
	 /// <param name="MyControl"></param>
	 /// <returns></returns>
	 public static int GetScrollPoint(int Bar, Control MyControl)
	 {
	 SCROLLINFO ScrollInfo = new SCROLLINFO();
	 ScrollInfo.cbSize = (uint)System.Runtime.InteropServices.Marshal.SizeOf(ScrollInfo);
	 ScrollInfo.fMask = (uint)ScrollBarInfoFlags.SIF_ALL;

	 GetScrollInfo(MyControl.Handle, Bar, ref ScrollInfo);

	 return ScrollInfo.nPos;
	 }
	 /// <summary>
	 /// 获取循环几次获得图形
	 /// </summary>
	 /// <returns></returns>
	 private static int GetScrollNumb(int MyControlNumb, int ScrollMaxInfoNumb)
	 {
	 double Step = (double)ScrollMaxInfoNumb / (double)MyControlNumb;
	 Step++;

	 if ((int)Step == Step)
	 {
	 return (int)Step;
	 }
	 else
	 {
	 return (int)Step+1;
	 }
	 }
	 /// <summary>
	 /// 获得控件不需要滚动条的宽和高（最终图形大小）
	 /// </summary>
	 /// <param name="MyControl"></param>
	 /// <param name="ScrollMaxInfo"></param>
	 /// <returns></returns>
	 private static Size GetControlSize(Control MyControl, Point ScrollMaxInfo)
	 {
	 return new Size(MyControl.Size.Width + ScrollMaxInfo.X-16, MyControl.Size.Height+ScrollMaxInfo.Y-16);
	 }
	 /// <summary>
	 /// 获取滚动条数据
	 /// </summary>
	 /// <param name="MyControl"></param>
	 /// <param name="ScrollSize"></param>
	 /// <returns></returns>
	 private static Point GetScrollPoint(Control MyControl)
	 {
	 Point MaxScroll = new Point();
	
	 SCROLLINFO ScrollInfo = new SCROLLINFO();
	 ScrollInfo.cbSize = (uint)System.Runtime.InteropServices.Marshal.SizeOf(ScrollInfo);
	 ScrollInfo.fMask = (uint)ScrollBarInfoFlags.SIF_ALL;

	 GetScrollInfo(MyControl.Handle, 1, ref ScrollInfo);
	 MaxScroll.Y = ScrollInfo.nMax - (int)ScrollInfo.nPage;
	 if ((int)ScrollInfo.nPage == 0) MaxScroll.Y = 0;
	 GetScrollInfo(MyControl.Handle, 0, ref ScrollInfo);
	 MaxScroll.X = ScrollInfo.nMax - (int)ScrollInfo.nPage;
	 if ((int)ScrollInfo.nPage == 0) MaxScroll.X = 0;
	 return MaxScroll;
	 }
	 /// <summary>
	 /// 移动控件滚动条位置
	 /// </summary>
	 /// <param name="Bar"></param>
	 /// <param name="Point"></param>
	 /// <param name="MyControl"></param>
	 private static void MoveBar(int Bar, int Point,Control MyControl)
	 {
	 if (Bar == 0)
	 {
	 SetScrollPos(MyControl.Handle, 0, Point, true);
	 SendMessage(MyControl.Handle, (int)0x0114, (int)ScrollBarRequests.SB_THUMBPOSITION, 0);
	 }
	 else
	 {
	 SetScrollPos(MyControl.Handle, 1, Point, true);
	 SendMessage(MyControl.Handle, (int)0x0115, (int)ScrollBarRequests.SB_THUMBPOSITION, 0);
	 }
	 }
	 }
	}

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　自动滚动条截图　　滚动条截图　　截图　

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