Category : Miscellaneous Language Source Code
Archive : WTHRDS.ZIP
Filename : THREADS.C
Output of file : THREADS.C contained in archive : WTHRDS.ZIP
#include
#include
#include "thrdapi.h"
/********************************************************************
* Threads test application *
* *
********************************************************************
* Copyright 1992 Robert Salesas, All Rights Reserved *
********************************************************************
* Version: 1.00 Author: Robert Salesas *
* Date: 30-Jan-1992 Changes: Original *
* *
* Version: 1.00 Author: Sylvain Tremblay *
* Date: 24-Feb-1992 Changes: Pascal to C convertion *
* *
********************************************************************/
#define APPNAME (LPSTR)"BC++/TC++ Threads"
#define APPFILE "THREADS.EXE"
#define CLASSNAME "Threads"
HANDLE hInst;
FARPROC BallProc,
LineProc;
/***** Thread functions *****/
VOID FAR PASCAL _export LineThread(PThreadRec Thread, HWND Wnd, WORD wParam, LONG lParam)
{
COLORREF Colors[] = { 0x00FF0000,
0x0000FF00,
0x000000FF,
0x00FFFF00,
0x0000FFFF,
0x00FF00FF,
0x00C000C0 };
HDC DC;
RECT Rect;
HPEN Pen,
OPen;
int X, Y, ColIndex;
COLORREF Col;
GetClientRect(Wnd, &Rect);
X = random(Rect.right);
Y = random(Rect.bottom);
Col = Colors[0];
Pen = CreatePen(PS_SOLID, 1, Col);
do {
DC = GetDC(Wnd);
if (DC == 0) {
DeleteObject(Pen);
ExitThread();
}
OPen = SelectObject(DC, Pen);
GetClientRect(Wnd, &Rect);
MoveTo(DC, X, Y);
X = max(0, min(Rect.right, X + random(91) - 45));
Y = max(0, min(Rect.bottom, Y + random(91) - 45));
LineTo(DC, X, Y);
SelectObject(DC, OPen);
ReleaseDC(Wnd, DC);
} while (YieldThread() != TM_QUIT);
DeleteObject(Pen);
ExitThread();
}
VOID FAR PASCAL _export BallThread(PThreadRec Thread, HWND Wnd, WORD wParam, LONG lParam)
{
HDC DC;
RECT Rect;
int XDir,
YDir,
X, OX,
Y, OY;
HICON Ball,
Erase;
X = 0;
Y = 0;
XDir = 10 + (random(11) - 5);
YDir = 10 + (random(11) - 5);
Ball = LoadIcon(hInst, MAKEINTRESOURCE(random(4) + 100));
Erase = LoadIcon(hInst, "ERASEBALL");
do {
DC = GetDC(Wnd);
if (DC == 0)
ExitThread();
GetClientRect(Wnd, &Rect);
OX = X;
OY = Y;
X = X + XDir;
Y = Y + YDir;
if (X < 0) {
X = 0;
XDir = -(XDir - (random(11) - 5));
YDir = YDir + (random(11) - 5);
}
if (X + 32 > Rect.right) {
X = Rect.right - 32;
XDir = -(XDir - (random(11) - 5));
YDir = YDir + (random(11) - 5);
}
if (Y < 0) {
Y = 0;
XDir = XDir - (random(11) - 5);
YDir = -(YDir + (random(11) - 5));
}
if (Y + 32 > Rect.bottom) {
Y = Rect.bottom - 32;
XDir = XDir + (random(11) - 5);
YDir = -(YDir + (random(11) - 5));
}
if ((XDir <= 0) && (XDir > -6))
XDir = -6;
if ((XDir > 0) && (XDir < 6))
XDir = 6;
if ((YDir <= 0) && (YDir > -6))
YDir = -6;
if ((YDir > 0) && (YDir < 6))
YDir = 5;
XDir = max(-20, min(20, XDir));
YDir = max(-20, min(20, YDir));
DrawIcon(DC, OX, OY, Erase);
DrawIcon(DC, X, Y, Ball);
ReleaseDC(Wnd, DC);
} while (YieldThread() != TM_QUIT);
ExitThread();
}
/***** Window function *****/
LONG _export FAR PASCAL MainWndProc(HWND Window, WORD Msg, WORD wParam, DWORD lParam)
{
char Title[256];
LONG NumThreads;
switch (Msg) {
case WM_CREATE:
LineProc = MakeProcInstance((FARPROC)LineThread, hInst);
BallProc = MakeProcInstance((FARPROC)BallThread, hInst);
break;
case WM_COMMAND:
switch(wParam) {
case 100:
StartThread(BallProc, 2000, Window, 0, 0);
NumThreads = GetNumThreads();
wsprintf(Title, "%s - %d Threads", APPNAME, NumThreads);
SetWindowText(Window, Title);
break;
case 110:
SetThreadPriority(StartThread((FARPROC)LineProc, 2000, Window, 0, 0), TS_DEFPRIORITY / 2);
NumThreads = GetNumThreads();
wsprintf(Title, "%s - %d Threads", APPNAME, NumThreads);
SetWindowText(Window, Title);
break;
case 500:
InvalidateRect(Window, NULL,TRUE);
break;
case 510:
EndTaskThreads(GetCurrentTask());
InvalidateRect(Window, NULL,TRUE);
NumThreads = GetNumThreads();
wsprintf(Title, "%s - %d Threads", APPNAME, NumThreads);
SetWindowText(Window, Title);
break;
}
break;
case WM_DESTROY:
EndTaskThreads(GetCurrentTask());
FreeProcInstance(BallProc);
FreeProcInstance(LineProc);
PostQuitMessage(0);
break;
default:
return DefWindowProc(Window, Msg, wParam, lParam);
}
}
int PASCAL WinMain (HANDLE hInstance, HANDLE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow)
{
HWND hWnd;
MSG msg;
WNDCLASS wndclass;
char Title[256];
if(!hPrevInstance) {
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = MainWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = 0;
wndclass.hIcon = LoadIcon(0, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(0, IDC_ARROW);
wndclass.hbrBackground = GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = (LPSTR)"APPMENU";
wndclass.lpszClassName = CLASSNAME;
if(!RegisterClass(&wndclass)) {
MessageBox(NULL, "Unable to register window class.", NULL, MB_OK|MB_ICONSTOP);
return 0;
}
}
hInst = hInstance;
wsprintf(Title, "%s - 0 Threads", APPNAME);
hWnd = CreateWindow(CLASSNAME,
Title,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
0,
CW_USEDEFAULT,
0,
0,
0,
hInstance,
NULL);
ShowWindow(hWnd, nCmdShow);
while(GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
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