/******************************************************* * * deom1---四個線程同時寫一個檔案( 沒有參數 ) * * ***********************************************************/ #include <windows.h> #include <process.h> /* _beginthread, _endthread */ #include <iostream> #include <fstream> using namespace std; ofstream out("out.txt"); void ThreadFunc1(PVOID param) { while(1) { Sleep(10); out<<"This was draw by thread l"<<endl; } } void ThreadFunc2(PVOID param) { while(1) { Sleep(10); out<<"This was draw by thread 2"<<endl; } } void ThreadFunc3(PVOID param) { while(1) { Sleep(10); out<<"This was draw by thread 3"<<endl; } } void ThreadFunc4(PVOID param) { while(1) { Sleep(10); out<<"This was draw by thread 4"<<endl; } } int main() { int i=0; _beginthread(ThreadFunc1,0,NULL); _beginthread(ThreadFunc2,0,NULL); _beginthread(ThreadFunc3,0,NULL); _beginthread(ThreadFunc4,0,NULL); Sleep(3000); out<<"end"; return 0; } //demo1 end----------------------------------------------- 第二個demo. /******************************************************* * * deom2---四個線程同時寫一個檔案( 有參數 ) * * ***********************************************************/ #include <windows.h> #include <process.h> /* _beginthread, _endthread */ #include <iostream> #include <fstream> #include <string> using namespace std; ofstream out("out.txt"); void ThreadFunc1(PVOID param) { while(1) { char *p; p=(char *) param; Sleep(10); out<<p<<"This was draw by thread l"<<endl; } } void ThreadFunc2(PVOID param) { while(1) { Sleep(10); out<<"This was draw by thread 2"<<endl; } } void ThreadFunc3(PVOID param) { while(1) { Sleep(10); out<<"This was draw by thread 3"<<endl; } } void ThreadFunc4(PVOID param) { while(1) { Sleep(10); out<<"This was draw by thread 4"<<endl; } } int main() { char *pstr=" 參數傳遞成功"; _beginthread(ThreadFunc1,0,pstr); _beginthread(ThreadFunc2,0,NULL); _beginthread(ThreadFunc3,0,NULL); _beginthread(ThreadFunc4,0,NULL); Sleep(1000); out<<"end"; return 0; } // demo2 end ------------------------------------------------ 第三個demo( 一個win32 應用程式 ) /******************************************************* * * deom3--- 在螢幕上隨機畫出一系列矩形 * * ***********************************************************/ #include <windows.h> #include <process.h> LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ; HWND hwnd ; int cxClient, cyClient ; int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { static TCHAR szAppName[] = TEXT ("RndRctMT") ; MSG msg ; WNDCLASS wndclass ; wndclass.style = CS_HREDRAW | CS_VREDRAW ; wndclass.lpfnWndProc = WndProc ; wndclass.cbClsExtra = 0 ; wndclass.cbWndExtra = 0 ; wndclass.hInstance = hInstance ; wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ; wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ; wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ; wndclass.lpszMenuName = NULL ; wndclass.lpszClassName = szAppName ; if (!RegisterClass (&wndclass)) { MessageBox (NULL, TEXT ("This program requires Windows NT!"),szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateWindow ( szAppName, TEXT ("Random Rectangles"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL) ; ShowWindow (hwnd, iCmdShow) ; UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0)) { TranslateMessage (&msg) ; DispatchMessage (&msg) ; } return msg.wParam ; } VOID Thread (PVOID pvoid) { HBRUSH hBrush ; HDC hdc ; int xLeft, xRight, yTop, yBottom, iRed, iGreen, iBlue ; while (TRUE) { if (cxClient != 0 || cyClient != 0) { xLeft = rand () % cxClient ; xRight = rand () % cxClient ; yTop = rand () % cyClient ; yBottom = rand () % cyClient ; iRed = rand () & 255 ; iGreen = rand () & 255 ; iBlue = rand () & 255 ; hdc = GetDC (hwnd) ; hBrush = CreateSolidBrush (RGB (iRed, iGreen, iBlue)) ; SelectObject (hdc, hBrush) ; Rectangle (hdc,min (xLeft, xRight), min (yTop, yBottom), max (xLeft, xRight), max (yTop, yBottom)) ; ReleaseDC (hwnd, hdc) ; DeleteObject (hBrush) ; } } } LRESULT CALLBACK WndProc ( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) { case WM_CREATE: _beginthread (Thread, 0, NULL) ; return 0 ; case WM_SIZE: cxClient = LOWORD (lParam) ; cyClient = HIWORD (lParam) ; return 0 ; case WM_DESTROY: PostQuitMessage (0) ; return 0 ; } return DefWindowProc (hwnd, message, wParam, lParam) ; } //demo4 end----------------------------------------------- |