455 lines
14 KiB
C
455 lines
14 KiB
C
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/*
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STARS.C
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Starfield simulator screensaver.
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History:
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6/17/91 stevecat ported to NT Windows
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2/10/92 stevecat snapped to latest ported to NT Windows
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*/
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#include <windows.h>
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#include <scrnsave.h>
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#include <commctrl.h>
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#include "stars.dlg"
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#include "strings.h"
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#include "uniconv.h"
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#define SCOPE 256
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#define MAXWARP 10 // Maximum warp speed
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#define MINWARP 0 // Minimum warp speed
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#define CLICKRANGE (MAXWARP-MINWARP)// Range for WarpSpeed scroll bar
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#define MINSTARS 10 // Minimum number of stars in field
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#define MAXSTARS 200 // Maximum number of stars in field
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#define WARPFACTOR 10 // Warp Factor 10 Mr. Sulu!
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#define SIZE 64
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#define DEF_DENSITY 25 // Default number of stars in field
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#define RAND(x) ((rand() % (x))+1)
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#define ZRAND(x) (rand() % (x))
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#define MINTIMERSPEED 50
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VOID CreateStar (WORD wIndex);
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LONG GetDlgItemLong (HWND hDlg, WORD wID, BOOL *pfTranslated, BOOL fSigned);
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VOID GetIniEntries (VOID);
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LONG GetPrivateProfileLong (LPTSTR pszApp, LPTSTR pszKey, LONG lDefault);
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WORD rand (VOID);
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VOID srand (DWORD dwSeed);
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DWORD dwRand; // Current random seed
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TCHAR szWarpSpeed [] = TEXT("WarpSpeed"); // .INI WarpSpeed key
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TCHAR szDensity [] = TEXT("Density"); // .INI Density key
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LONG nX[MAXSTARS],
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nY[MAXSTARS],
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nZ[MAXSTARS];
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WORD wXScreen,
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wYScreen,
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wX2Screen,
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wY2Screen;
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WORD wWarpSpeed, // Global WarpSpeed value
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wDensity; // Global starfield density value
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//
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// Help IDs
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//
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DWORD aStarsDlgHelpIds[] = {
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((DWORD) -1), ((DWORD) -1),
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ID_SPEED_SLOW, IDH_DISPLAY_SCREENSAVER_STARFIELD_WARP,
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ID_SPEED_FAST, IDH_DISPLAY_SCREENSAVER_STARFIELD_WARP,
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ID_SPEED, IDH_DISPLAY_SCREENSAVER_STARFIELD_WARP,
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ID_DENSITY_LABEL, IDH_DISPLAY_SCREENSAVER_STARFIELD_DENSITY,
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ID_DENSITY, IDH_DISPLAY_SCREENSAVER_STARFIELD_DENSITY,
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ID_DENSITYARROW, IDH_DISPLAY_SCREENSAVER_STARFIELD_DENSITY,
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0,0
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};
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#define DIVIDE_SAFE(nNumber) ((0 == (nNumber)) ? 1 : (nNumber))
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/* This is the main window procedure to be used when the screen saver is
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activated in a screen saver mode ( as opposed to configure mode ). This
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function must be declared as an EXPORT in the EXPORTS section of the
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DEFinition file... */
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LRESULT ScreenSaverProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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RECT rRect;
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WORD wLoop;
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static UINT_PTR wTimer;
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static WORD wWarp;
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static WORD wTimerSet=MINTIMERSPEED;
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static WORD wCurrentWarp;
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static int nPassCount=0;
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int nXTemp, nYTemp, nTemp;
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BOOL fHyperSpace = TRUE;
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HDC hDC;
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switch (message)
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{
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case WM_CREATE:
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/* Do anything that you need to do when you initialize the window
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here... */
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GetIniEntries ();
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srand (GetCurrentTime ());
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/* Make sure we use the entire virtual desktop size for multiple
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displays... */
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wXScreen = (WORD) ((LPCREATESTRUCT)lParam)->cx;
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wYScreen = (WORD) ((LPCREATESTRUCT)lParam)->cy;
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wX2Screen = wXScreen / 2;
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wY2Screen = wYScreen / 2;
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for (wLoop = 0; wLoop < wDensity; wLoop++)
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CreateStar (wLoop);
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wWarp = wWarpSpeed * WARPFACTOR + WARPFACTOR; // ZRAND (((wWarpSpeed)*WARPFACTOR)+1)+1;
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wTimer = SetTimer (hWnd, 1, wTimerSet, NULL);
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break;
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case WM_SIZE:
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wXScreen = LOWORD(lParam);
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wYScreen = HIWORD(lParam);
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break;
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case WM_TIMER:
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{
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MSG msg;
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hDC = GetDC (hWnd);
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/* Begin to loop through each star, accelerating so it seems that
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we are traversing the starfield... */
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for (wLoop = 0; wLoop < wDensity; wLoop++)
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{
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nXTemp = (int)((nX[wLoop] * (LONG)(SCOPE * WARPFACTOR))
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/ DIVIDE_SAFE(nZ[wLoop])) + wX2Screen;
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nYTemp = (int)((nY[wLoop] * SCOPE * WARPFACTOR) / DIVIDE_SAFE(nZ[wLoop]))
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+ wY2Screen;
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nTemp = (int)((SCOPE * WARPFACTOR - nZ[wLoop]) /
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(SIZE * WARPFACTOR)) + 1;
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PatBlt (hDC, nXTemp, nYTemp, nTemp, nTemp, BLACKNESS);
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if (wCurrentWarp < wWarp)
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wCurrentWarp++;
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else if (wCurrentWarp > wWarp)
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wCurrentWarp--;
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nZ[wLoop] = max (0, (int)(nZ[wLoop] - wCurrentWarp));
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if (!nZ[wLoop])
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CreateStar (wLoop);
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nXTemp = (int)((nX[wLoop] * (LONG)(SCOPE * WARPFACTOR))
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/ DIVIDE_SAFE(nZ[wLoop])) + wX2Screen;
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nYTemp = (int)((nY[wLoop] * SCOPE * WARPFACTOR)
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/ DIVIDE_SAFE(nZ[wLoop])) + wY2Screen;
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if ((nXTemp < 0 || nYTemp < 0) ||
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(nXTemp > (int) wXScreen || nYTemp > (int) wYScreen))
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{
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CreateStar (wLoop);
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nXTemp = (int)((nX[wLoop] * (LONG)(SCOPE * WARPFACTOR))
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/ DIVIDE_SAFE(nZ[wLoop])) + wX2Screen;
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nYTemp = (int)((nY[wLoop] * SCOPE * WARPFACTOR)
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/ DIVIDE_SAFE(nZ[wLoop])) + wY2Screen;
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}
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nTemp = (int)((SCOPE * WARPFACTOR - nZ[wLoop]) /
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(SIZE * WARPFACTOR)) + 1;
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PatBlt (hDC, nXTemp, nYTemp, nTemp, nTemp, WHITENESS);
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}
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ReleaseDC (hWnd, hDC);
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if (PeekMessage(&msg, hWnd, WM_TIMER, WM_TIMER, PM_REMOVE))
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{
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// There is another WM_TIMER message in the queue. We have
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// removed it, but now we want to adjust the timer a bit so
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// hopefully we won't get another WM_TIMER message before we
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// finish the screen update. (bug #8423) TG:11/25/91
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wTimerSet += 10;
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SetTimer(hWnd, 1, wTimerSet, NULL);
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nPassCount = 0;
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}
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else
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++nPassCount;
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if (nPassCount >= 100)
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{
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nPassCount = 0;
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wTimerSet -= 100;
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if ((short)wTimerSet < MINTIMERSPEED)
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wTimerSet = MINTIMERSPEED;
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SetTimer(hWnd, 1, wTimerSet, NULL);
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}
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break;
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}
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case WM_ERASEBKGND:
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/* If you want something put on the background, do it right here
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using wParam as a handle to a device context. Remember to
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unrealize a brush if it is not a solid color. If you do
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something here, you want to use the line:
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return 0l;
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So the program knows not to take the default action. Otherwise
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just use:
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break;
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*/
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break;
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GetClientRect (hWnd, &rRect);
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FillRect ((HDC) wParam, &rRect, GetStockObject (GRAY_BRUSH));
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return 0l;
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case WM_DESTROY:
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/* Anything that needs to be deleted when the window is closed
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goes here... */
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if (wTimer)
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KillTimer (hWnd, wTimer);
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break;
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}
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/* Unless it is told otherwise, the program will take default actions... */
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return (DefScreenSaverProc (hWnd, message, wParam, lParam));
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}
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//***************************************************************************
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BOOL ScreenSaverConfigureDialog (HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
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{
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BOOL fError; // Error flag
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UINT wTemp;
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TCHAR szTemp[20]; // Temporary string buffer
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static WORD wPause, wScroll;
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static HWND hWarpSpeed, // window handle of Speed scrollbar
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hIDOK, // window handle of OK button
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hSetPassword, // window handle of SetPassword button
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hDensity; // window handle of Density EditControl
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static WORD wIncScroll = 1; // density spin button parameters
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static WORD wStartScroll = 1;
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static WORD wStartPause = 1;
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static WORD wMaxScroll = 10;
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static WORD wPauseScroll = 20;
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static LONG lMinScroll = MINSTARS;
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static LONG lMaxScroll = MAXSTARS;
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switch (message)
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{
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case WM_INITDIALOG:
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GetIniEntries ();
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hWarpSpeed = GetDlgItem (hDlg, ID_SPEED);
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hIDOK = GetDlgItem (hDlg, IDOK);
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hDensity = GetDlgItem (hDlg, ID_DENSITY);
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SendMessage (hDensity, EM_LIMITTEXT, 3, 0);
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SendDlgItemMessage( hDlg, ID_DENSITYARROW, UDM_SETBUDDY, (WPARAM)hDensity, 0);
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SendDlgItemMessage( hDlg, ID_DENSITYARROW, UDM_SETRANGE, 0, MAKELONG(lMaxScroll, lMinScroll));
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SetScrollRange (hWarpSpeed, SB_CTL, MINWARP, MAXWARP, FALSE);
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SetScrollPos (hWarpSpeed, SB_CTL, wWarpSpeed, TRUE);
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SetDlgItemInt (hDlg, ID_DENSITY, wDensity, FALSE);
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return TRUE;
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case WM_HSCROLL:
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switch (LOWORD(wParam))
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{
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case SB_LINEUP:
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case SB_PAGEUP:
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--wWarpSpeed;
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break;
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case SB_LINEDOWN:
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case SB_PAGEDOWN:
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++wWarpSpeed;
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break;
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case SB_THUMBPOSITION:
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wWarpSpeed = HIWORD (wParam);
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break;
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case SB_TOP:
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wWarpSpeed = MINWARP;
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break;
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case SB_BOTTOM:
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wWarpSpeed = MAXWARP;
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break;
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case SB_THUMBTRACK:
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case SB_ENDSCROLL:
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return TRUE;
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break;
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}
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if ((int)((short)wWarpSpeed) <= MINWARP)
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wWarpSpeed = MINWARP;
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if ((int)wWarpSpeed >= MAXWARP)
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wWarpSpeed = MAXWARP;
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SetScrollPos ((HWND) lParam, SB_CTL, wWarpSpeed, TRUE);
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break;
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case WM_COMMAND:
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switch (LOWORD(wParam))
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{
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case ID_DENSITY:
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if (HIWORD(wParam) == EN_UPDATE)
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{
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wTemp = GetDlgItemInt (hDlg, ID_DENSITY, &fError, FALSE);
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fError = ((wTemp <= MAXSTARS) && (wTemp >= MINSTARS));
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EnableWindow (GetDlgItem (hDlg, ID_DENSITYARROW), fError);
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EnableWindow (GetDlgItem (hDlg, IDOK), fError);
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}
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break;
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case IDOK:
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wTemp = GetDlgItemInt (hDlg, ID_DENSITY, &fError, FALSE);
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wsprintf (szTemp, TEXT("%d"), wTemp);
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WritePrivateProfileString (szAppName, szDensity, szTemp, szIniFile);
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wsprintf (szTemp, TEXT("%d"), wWarpSpeed);
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WritePrivateProfileString (szAppName, szWarpSpeed, szTemp, szIniFile);
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case IDCANCEL:
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EndDialog (hDlg, LOWORD(wParam) == IDOK);
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return TRUE;
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}
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break;
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case WM_HELP: // F1
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WinHelp(
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(HWND) ((LPHELPINFO) lParam)->hItemHandle,
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szHelpFile,
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HELP_WM_HELP,
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(ULONG_PTR) (LPSTR) aStarsDlgHelpIds
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);
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break;
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case WM_CONTEXTMENU: // right mouse click
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WinHelp(
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(HWND) wParam,
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szHelpFile,
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HELP_CONTEXTMENU,
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(ULONG_PTR) (LPSTR) aStarsDlgHelpIds
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);
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break;
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default:
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break;
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}
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return FALSE;
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}
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/* This procedure is called right before the dialog box above is created in
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order to register any child windows that are custom controls. If no
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custom controls need to be registered, then simply return TRUE.
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Otherwise, register the child controls however is convenient... */
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BOOL RegisterDialogClasses (HANDLE hInst)
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{
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InitCommonControls();
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return TRUE;
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}
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VOID srand (DWORD dwSeed)
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{
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dwRand = dwSeed;
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}
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WORD rand (VOID)
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{
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dwRand = dwRand * 214013L + 2531011L;
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|
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return (WORD)((dwRand >> 16) & 0xffff);
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID CreateStar (WORD wIndex)
|
||
|
|
{
|
||
|
|
nX[wIndex] = wXScreen ? (LONG)((int)(ZRAND (wXScreen)) - (int)wX2Screen) : 0;
|
||
|
|
nY[wIndex] = wXScreen ? (LONG)((int)(ZRAND (wYScreen)) - (int)wY2Screen) : 0;
|
||
|
|
nZ[wIndex] = SCOPE * WARPFACTOR;
|
||
|
|
}
|
||
|
|
|
||
|
|
LONG GetDlgItemLong (HWND hDlg, WORD wID, BOOL *pfTranslated, BOOL fSigned)
|
||
|
|
{
|
||
|
|
TCHAR szTemp[20];
|
||
|
|
LPTSTR pszTemp;
|
||
|
|
LONG lTemp = 0l;
|
||
|
|
BOOL fNegative;
|
||
|
|
|
||
|
|
if (!GetDlgItemText (hDlg, wID, szTemp, CharSizeOf(szTemp)))
|
||
|
|
goto GetDlgItemLongError;
|
||
|
|
|
||
|
|
szTemp[19] = TEXT('\0');
|
||
|
|
pszTemp = szTemp;
|
||
|
|
while (*pszTemp == TEXT(' ') || *pszTemp == TEXT('\t'))
|
||
|
|
pszTemp++;
|
||
|
|
if ((!fSigned && *pszTemp == TEXT('-')) || !*pszTemp)
|
||
|
|
goto GetDlgItemLongError;
|
||
|
|
fNegative = (*pszTemp == TEXT('-')) ? TRUE : FALSE;
|
||
|
|
while (*pszTemp >= TEXT('0') && *pszTemp <= TEXT('9'))
|
||
|
|
lTemp = lTemp * 10l + (LONG)(*(pszTemp++) - TEXT('0'));
|
||
|
|
if (*pszTemp)
|
||
|
|
goto GetDlgItemLongError;
|
||
|
|
if (fNegative)
|
||
|
|
lTemp *= -1;
|
||
|
|
*pfTranslated = TRUE;
|
||
|
|
return lTemp;
|
||
|
|
|
||
|
|
GetDlgItemLongError:
|
||
|
|
*pfTranslated = FALSE;
|
||
|
|
return 0l;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
LONG GetPrivateProfileLong (LPTSTR pszApp, LPTSTR pszKey, LONG lDefault)
|
||
|
|
{
|
||
|
|
LONG lTemp = 0l;
|
||
|
|
TCHAR szTemp[20];
|
||
|
|
LPTSTR pszTemp;
|
||
|
|
|
||
|
|
if (!GetPrivateProfileString (pszApp, pszKey, TEXT(""), szTemp, CharSizeOf(szTemp), szIniFile))
|
||
|
|
goto GetProfileLongError;
|
||
|
|
|
||
|
|
szTemp[19] = TEXT('\0');
|
||
|
|
pszTemp = szTemp;
|
||
|
|
while (*pszTemp >= TEXT('0') && *pszTemp <= TEXT('9'))
|
||
|
|
lTemp = lTemp * 10l + (LONG)(*(pszTemp++) - TEXT('0'));
|
||
|
|
if (*pszTemp)
|
||
|
|
goto GetProfileLongError;
|
||
|
|
return lTemp;
|
||
|
|
|
||
|
|
GetProfileLongError:
|
||
|
|
return lDefault;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
VOID GetIniEntries (VOID)
|
||
|
|
{
|
||
|
|
LoadString (hMainInstance, idsName, szName, CharSizeOf(szName));
|
||
|
|
LoadString (hMainInstance, idsAppName, szAppName, CharSizeOf(szAppName));
|
||
|
|
|
||
|
|
//Load Common Strings from stringtable...
|
||
|
|
LoadString (hMainInstance, idsIniFile, szIniFile, CharSizeOf(szIniFile));
|
||
|
|
LoadString (hMainInstance, idsScreenSaver, szScreenSaver, CharSizeOf(szScreenSaver));
|
||
|
|
LoadString (hMainInstance, idsHelpFile, szHelpFile, CharSizeOf(szHelpFile));
|
||
|
|
LoadString (hMainInstance, idsNoHelpMemory, szNoHelpMemory, CharSizeOf(szNoHelpMemory));
|
||
|
|
|
||
|
|
wWarpSpeed = (WORD) GetPrivateProfileInt (szAppName, szWarpSpeed, MINWARP + ((MAXWARP - MINWARP) / 2), szIniFile);
|
||
|
|
if (wWarpSpeed > MAXWARP)
|
||
|
|
wWarpSpeed = MINWARP + ((MAXWARP - MINWARP) / 2);
|
||
|
|
|
||
|
|
wDensity = (WORD) GetPrivateProfileInt (szAppName, szDensity, DEF_DENSITY, szIniFile);
|
||
|
|
if (wDensity > MAXSTARS)
|
||
|
|
wDensity = MAXSTARS;
|
||
|
|
if (wDensity < MINSTARS)
|
||
|
|
wDensity = MINSTARS;
|
||
|
|
}
|