如何在应用程序的后台线程中运行复杂的功能? [英] how to run a complex function in the background thread of an application?

问题描述

你好.
在单击按钮时，我需要运行一个非常复杂的自动滚动系统.原因是我需要能够与表单上的其他流程进行交互.并停止当前的一个这是需要在后台线程中的代码:

hello.
on a button click, i need to run a very complex automatic scrolling system. the reason for this is that i need to be able to interact with other processes on the form. and also stop the current one. here is the code that needs to be in the background thread:

void scroll(IntPtr handle, int pixels)
        {

            {
                IntPtr ptrLparam = new IntPtr(0);
                IntPtr ptrWparam;

                SCROLLINFO si = new SCROLLINFO();
                si.cbSize = (uint)Marshal.SizeOf(si);
                si.fMask = (uint)ScrollInfoMask.SIF_ALL;
                GetScrollInfo(handle, (int)ScrollBarDirection.SB_VERT, ref si);

                telep.DeselectAll();

                if (t.Enabled)
                {
                    if (si.nPos < (si.nMax - si.nPage))
                        si.nPos += pixels;
                    else
                    {
                        ptrWparam = new IntPtr(SB_ENDSCROLL);
                        t.Enabled = false;
                        SendMessage(handle, WM_VSCROLL, ptrWparam, ptrLparam);
                    }
                }

                if (t.Enabled == false)
                {
                    if (si.nPos > (si.nMin))
                        si.nPos -= pixels;
                    else
                    {
                        ptrWparam = new IntPtr(SB_ENDSCROLL);
                        t.Enabled = true;
                        SendMessage(handle, WM_VSCROLL, ptrWparam, ptrLparam);
                    }
                }
                SetScrollInfo(handle, (int)ScrollBarDirection.SB_VERT, ref si, true);

                // Send a WM_VSCROLL scroll message using SB_THUMBTRACK as wParam
                // SB_THUMBTRACK: low-order word of wParam, si.nPos high-order word of wParam
                ptrWparam = new IntPtr(SB_THUMBTRACK + 0x10000 * si.nPos);
                SendMessage(handle, WM_VSCROLL, ptrWparam, ptrLparam);
            }
        }

推荐答案

那么，您的问题是什么?

如果需要传递参数时如何使用BackgroundWorker，请参见此处:

http://tinyurl.com/47hrlqe [ ^ ]

So, what is your question?

If it''s how do you use a BackgroundWorker when you need to be able to pass arguments to it, see here:

http://tinyurl.com/47hrlqe[^]

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