多线程示例(一) 线程的创建与启动

小咪咪 2022-08-14 04:36 121阅读 0赞

// ComputeDialog.cpp : 实现文件 // \#include "stdafx.h" \#include "Ex13.h" \#include "ComputeDialog.h" //int g\_nCount = 0; UINT ComputeThreadProc(LPVOID pParam) \{ for(int i = 0; i < 100000 ; ++i) for (int j = 0; j < 100000; ++j) \{ \} TRACE(\_T("Finished")); ::PostMessage((HWND)pParam, WM\_THREADFINISHED, 0, 0); return 0; \} // CComputeDialog 对话框 IMPLEMENT\_DYNAMIC(CComputeDialog, CDialog) CComputeDialog::CComputeDialog(CWnd\* pParent /\*=NULL\*/) : CDialog(CComputeDialog::IDD, pParent), g\_nCount(0) \{ \} CComputeDialog::~CComputeDialog() \{ \} void CComputeDialog::DoDataExchange(CDataExchange\* pDX) \{ CDialog::DoDataExchange(pDX); \} BEGIN\_MESSAGE\_MAP(CComputeDialog, CDialog) ON\_BN\_CLICKED(IDC\_START, &CComputeDialog::OnBnClickedStart) ON\_BN\_CLICKED(IDC\_CANCEL, &CComputeDialog::OnBnClickedCancel) ON\_WM\_TIMER() ON\_MESSAGE(WM\_THREADFINISHED, OnThreadFinished) END\_MESSAGE\_MAP() LRESULT CComputeDialog::OnThreadFinished(WPARAM wParam, LPARAM lParam) \{ GetDlgItem(IDC\_START)->EnableWindow(TRUE); KillTimer(1); //CDialog::OnOK(); return 0; \} // CComputeDialog 消息处理程序 void CComputeDialog::OnBnClickedStart() \{ // TODO: 在此添加控件通知处理程序代码 //MSG message; m\_nTimer = SetTimer(1, 100, NULL); ASSERT(m\_nTimer != 0); GetDlgItem(IDC\_START)->EnableWindow(FALSE); AfxBeginThread(ComputeThreadProc, GetSafeHwnd(), THREAD\_PRIORITY\_NORMAL); \} void CComputeDialog::OnBnClickedCancel() \{ // TODO: 在此添加控件通知处理程序代码 if(g\_nCount == 0) CDialog::OnCancel(); else \{ g\_nCount = nMaxCount; KillTimer(1); CDialog::OnCancel(); \} \} void CComputeDialog::OnTimer(UINT\_PTR nIDEvent) \{ // TODO: 在此添加消息处理程序代码和/或调用默认值 CProgressCtrl\* pBar = (CProgressCtrl\*) GetDlgItem(IDC\_PROGRESS1); g\_nCount+=1000; TRACE("In OnTimer: g\_nCount = %d/n", g\_nCount); if (g\_nCount < nMaxCount) pBar->SetPos(g\_nCount\*100 / nMaxCount); CDialog::OnTimer(nIDEvent); \}