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SYSGRAPH.ZIP
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SYSGRAPH.C
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C/C++ Source or Header
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1990-12-15
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8KB
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308 lines
/* SYSGRAPH 3.0
*
* Version 3.0 14-dec-90 J.R. Hasselbeck
* o Option to show CPU loading rather or
* a relative CPU freetime type of display.
* o Rebuilt for windows 3.0
* o Added user selectable update rate.
*
* Version 2.0 4/20/88 (c) Copyright 1988, Bill Crow, Hewlett-Packard Co
* Renamed from SYSQUEUE to SYSGRAPH
* Added dynnamic scaling
* Added menu commands for rescaling and Auto Rescaling
* Added About... Dialog box.
*
* Previous versions:
*
* SysQueue.C -- Windows application that displays system load
* by Barry Press, adapted from FreeMem written
* by Charles Petzold as printed in Microsoft Systems Journal
*
* Adapted for Graphic Display by Alec Saunders
* Graph goes down when load increases and rises when
* load decreases.
*/
#include <windows.h> /* all Windows functions */
#include <stdlib.h> /* ltoa */
#include <string.h> /* strcat & strlen */
#include "sysgraph.h" /* RC defines */
#define MAXCOUNT 25
static HANDLE globhInst;
static int lLoopCount[MAXCOUNT];
static int iMaxSize=0;
static BOOL bRescale=FALSE;
static BOOL bAutoRescale=FALSE;
static short nCurrentType = IDD_FREE;
static short nCurrentUpdate = IDD_1SEC;
static int lTmpCnt = 0;
static int smpcnt = 2; /* 2 samples per 1 sec def update */
long FAR PASCAL WndProc (HWND, unsigned, WORD, LONG);
BOOL FAR PASCAL AboutDlgProc(HWND, unsigned, WORD, LONG);
/* WinMain - Main loop for all Windows applications */
int PASCAL WinMain ( hInstance, hPrevInstance, lpszCmdLine, nCmdShow)
HANDLE hInstance, hPrevInstance;
LPSTR lpszCmdLine;
int nCmdShow;
{
static char szAppName [] = "SysGraph";
WNDCLASS WndClass;
HWND hWnd;
MSG msg;
HMENU hMenu;
int i;
/* allow only one instance */
if (hPrevInstance)
return FALSE;
globhInst = hInstance;
/* define Window class */
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hIcon = NULL;
WndClass.cbClsExtra = 0;
WndClass.cbWndExtra = 0;
WndClass.lpszMenuName = NULL;
WndClass.lpszClassName = szAppName;
WndClass.hbrBackground = GetStockObject( WHITE_BRUSH );
WndClass.hInstance = hInstance;
WndClass.style = CS_VREDRAW | CS_HREDRAW;
WndClass.lpfnWndProc = WndProc;
/* register this new class with WINDOWS */
if (!RegisterClass( &WndClass ))
return FALSE; /* Initialization failed */
/* create window */
hWnd = CreateWindow( szAppName,
szAppName,
WS_TILEDWINDOW,
0, 0, 0, 0,
(HWND) NULL,
(HMENU) NULL,
hInstance,
NULL);
/* set up timer (1 update/sec) */
if (!SetTimer (hWnd, 1, 1000, NULL) )
return FALSE;
hMenu = GetSystemMenu(hWnd,FALSE);
ChangeMenu(hMenu, 0, NULL, 999, MF_APPEND | MF_SEPARATOR);
ChangeMenu(hMenu,0,(LPSTR)"R&escale", IDRESCALE,
MF_APPEND | MF_STRING | (bAutoRescale? MF_GRAYED : MF_ENABLED));
ChangeMenu(hMenu,0,(LPSTR)"A&uto Rescale", IDAUTORESCALE,
MF_APPEND | MF_STRING | (bAutoRescale? MF_CHECKED : MF_UNCHECKED));
ChangeMenu(hMenu,0,(LPSTR)"A&bout...",IDABOUT, MF_APPEND | MF_STRING);
/* show window (start in ICONIC state) */
ShowWindow( hWnd, SHOW_ICONWINDOW );
UpdateWindow( hWnd );
/* initialize loop count which is bumped in loop */
for(i=0;i<MAXCOUNT;lLoopCount[i++] = 0)
;
/* main program loop */
while (TRUE) {
lTmpCnt++;
if (PeekMessage( &msg, NULL, 0, 0, TRUE )) {
if (msg.message == WM_QUIT)
break;
TranslateMessage( &msg );
DispatchMessage( &msg );
}
}
/* exit back to Windows */
return (int) msg.wParam;
} /* end WinMain */
/* WndProc - Window procedure for main window */
long FAR PASCAL WndProc (hWnd, message, wParam, lParam)
HWND hWnd;
unsigned message;
WORD wParam;
LONG lParam;
{
char buffer[MAXCOUNT];
PAINTSTRUCT ps;
RECT rect;
HMENU hMenu;
int i;
static int lupdate;
/* switch on message type sent to window by Windows dispatcher */
switch(message) {
case WM_TIMER:
if (lupdate != nCurrentUpdate)
{
KillTimer (hWnd, 1);
lupdate = nCurrentUpdate;
SetTimer (hWnd, 1, (lupdate - 9) * 1000, NULL);
}
lLoopCount[MAXCOUNT - 1] = lTmpCnt / smpcnt;
if (iMaxSize<lLoopCount[MAXCOUNT-1])
iMaxSize=lLoopCount[MAXCOUNT-1];
for (i=0; i<(MAXCOUNT - 1); i++)
lLoopCount[i] = lLoopCount[i+1];
lTmpCnt = 0;
InvalidateRect( hWnd, NULL, TRUE );
break;
case WM_PAINT:
BeginPaint( hWnd, &ps );
GetClientRect( hWnd, &rect );
SetMapMode( ps.hdc, MM_ANISOTROPIC);
if (bRescale | bAutoRescale) {
iMaxSize=0;
for (i=0;i<MAXCOUNT;i++) {
if (iMaxSize<lLoopCount[i])
iMaxSize=lLoopCount[i];
}
bRescale=FALSE;
}
SetWindowOrg( ps.hdc, 0, 0);
SetWindowExt( ps.hdc, MAXCOUNT, iMaxSize);
SetViewportOrg(ps.hdc, 0, 0);
SetViewportExt(ps.hdc, rect.right - rect.left,
rect.bottom - rect.top);
if (nCurrentType == IDD_LOAD)
{
MoveTo( ps.hdc, 0, lLoopCount[0]);
for (i = 1; i < (MAXCOUNT - 1); i++)
LineTo( ps.hdc, i, lLoopCount[i]);
}
else
{
MoveTo( ps.hdc, 0, iMaxSize - lLoopCount[0]);
for (i = 1; i < (MAXCOUNT - 1); i++)
LineTo( ps.hdc, i, iMaxSize - lLoopCount[i]);
}
EndPaint( hWnd, &ps );
break;
case WM_SYSCOMMAND:
switch (wParam)
{
case IDABOUT:
DialogBox(globhInst,
(LPSTR)"AboutBox",
hWnd,
MakeProcInstance( (FARPROC)AboutDlgProc, globhInst));
break;
case IDRESCALE:
bRescale=TRUE;
break;
case IDAUTORESCALE:
bAutoRescale = ! bAutoRescale;
hMenu = GetSystemMenu(hWnd,FALSE);
CheckMenuItem(hMenu,
IDAUTORESCALE,
MF_BYCOMMAND |
(bAutoRescale? MF_CHECKED : MF_UNCHECKED));
EnableMenuItem(hMenu,
IDRESCALE,
MF_BYCOMMAND |
(bAutoRescale? MF_GRAYED : MF_ENABLED));
break;
default:
return DefWindowProc(hWnd,message,wParam,lParam);
break;
}
break;
case WM_DESTROY:
KillTimer (hWnd, 1);
PostQuitMessage( 0 );
break;
default:
return DefWindowProc( hWnd, message, wParam, lParam);
}
return (long) 0;
} /* end WndProc */
BOOL FAR PASCAL AboutDlgProc(hDlg, imessage, wParam, lParam )
HWND hDlg;
unsigned imessage;
WORD wParam;
LONG lParam;
{
static HWND hCtrlBlock;
static short nupdate; /* Update rate */
static short ntype;
switch (imessage)
{
case WM_INITDIALOG: nupdate = nCurrentUpdate;
ntype = nCurrentType;
CheckRadioButton (hDlg, IDD_1SEC, IDD_5SEC, nupdate);
CheckRadioButton (hDlg, IDD_FREE, IDD_LOAD, ntype);
hCtrlBlock = GetDlgItem(hDlg, IDD_PAINT);
SetFocus (GetDlgItem(hDlg, nupdate));
return FALSE;
case WM_COMMAND:
switch (wParam)
{
case IDOK: nCurrentType = ntype;
nCurrentUpdate = nupdate;
EndDialog (hDlg, TRUE);
smpcnt = 10;
if (nupdate == IDD_1SEC)
smpcnt = 2;
if (nupdate == IDD_2SEC)
smpcnt = 4;
break;
case IDCANCEL: EndDialog (hDlg, TRUE);
break;
case IDD_1SEC:
case IDD_2SEC:
case IDD_5SEC:
nupdate = wParam;
CheckRadioButton (hDlg, IDD_1SEC, IDD_5SEC, wParam);
break;
case IDD_FREE:
case IDD_LOAD:
ntype = wParam;
CheckRadioButton (hDlg, IDD_FREE, IDD_LOAD, wParam);
break;
default: return FALSE;
} /* end switch */
break;
default: return FALSE;
} /* end switch */
return TRUE;
} /* end of procedure AboutDlgProc() */