406 lines
11 KiB
C
406 lines
11 KiB
C
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/*
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* SCRNSAVE.C - default screen saver.
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*
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* this app makes a IdleWild screen saver compatible with the windows 3.1
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* screen saver interface.
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*
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* Usage: SCRNSAVE.EXE saver.iw [/s] [/c]
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*
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* the IdleWild screen saver 'saver.iw' will be loaded and told to
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* screen save. if '/c' is specifed the savers configure dialog will
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* be shown.
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*
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* when the screen saver terminates SCRNSAVE.EXE will terminate too.
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*
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* if the saver.iw is not specifed or refuses to load then a
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* builtin 'blackness' screen saver will be used.
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*
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* Restrictions:
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*
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* because only one screen saver is loaded, (not all the screen savers
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* like IdleWild.exe does) the random screen saver will not work correctly
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*
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* History:
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* 10/15/90 ToddLa stolen from SOS.C by BradCh
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* 6/17/91 stevecat ported to NT Windows
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*
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*/
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#include <string.h>
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#define WIN31 /* For topmost windows */
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#include <windows.h>
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#include "strings.h"
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#include <stdlib.h>
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#define BUFFER_LEN 255
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CHAR szAppName[BUFFER_LEN];
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CHAR szNoConfigure[BUFFER_LEN];
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#define THRESHOLD 3
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#define abs(x) ( (x)<0 ? -(x) : (x) )
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//
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// private stuff in IWLIB.DLL
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//
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HANDLE hIdleWildDll;
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CHAR szIdleWildDll[] = "IWLIB.DLL";
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SHORT (*FInitScrSave) (HANDLE, HWND);
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VOID (*TermScrSave) (VOID);
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VOID (*ScrBlank) (SHORT);
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VOID (*ScrSetIgnore) (SHORT);
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SHORT (*ScrLoadServer) (CHAR *);
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SHORT (*ScrSetServer) (CHAR *);
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VOID (*ScrInvokeDlg) (HANDLE, HWND);
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HANDLE hMainInstance = NULL;
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HWND hwndApp = NULL;
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HWND hwndActive = NULL;
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HWND hwndPreview = NULL;
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BOOL fBlankNow = FALSE;
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BOOL fIdleWild = FALSE;
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//SHORT wmScrSave = -1;
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// changed to what I believe it should be
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UINT wmScrSave = 0xffffffff;
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typedef LONG (*LPWNDPROC)(); // pointer to a window procedure
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BOOL FInitIdleWild (LPSTR szCmdLine);
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BOOL FTermIdleWild (VOID);
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BOOL FInitApp (HANDLE hInstance, LPSTR szCmdLine, WORD sw);
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BOOL FTermApp (VOID);
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BOOL FInitDefault (VOID);
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LRESULT DefaultProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
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int __cdecl main (USHORT argc, CHAR **argv)
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{
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HANDLE hInstance;
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HANDLE hPrev = NULL;
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LPSTR szCmdLine = GetCommandLine();
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WORD sw = SW_SHOWNORMAL;
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MSG msg;
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hInstance = GetModuleHandle (NULL);
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hMainInstance = hInstance;
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// If we're already running another instance, get out
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if (hPrev != NULL)
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return FALSE;
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if (!FInitApp (hInstance, szCmdLine, sw))
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{
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//MessageBox (NULL, "Cannot initialize!", szAppName, MB_OK);
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return FALSE;
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}
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while (GetMessage (&msg, NULL, 0, 0))
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{
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//
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// IWLIB.DLL will brodcast a message when the screen saving
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// is done.
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//
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if (msg.message == wmScrSave && msg.wParam == FALSE)
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break;
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TranslateMessage (&msg);
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DispatchMessage (&msg);
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}
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return FTermApp ();
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}
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BOOL FTermApp (VOID)
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{
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////FTermDefault ();
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FTermIdleWild ();
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return TRUE;
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}
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BOOL FInitApp (HANDLE hInstance, LPSTR szCmdLine, WORD sw)
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{
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LPSTR lpch, lpT;
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LoadString(hMainInstance, idsAppName, szAppName, BUFFER_LEN);
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LoadString(hMainInstance, idsNoConfigure, szNoConfigure, BUFFER_LEN);
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//=================================================================
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// on NT, szCmdLine's first string includes its own name, remove this
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// to make it exactly like the windows command line.
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if (*szCmdLine)
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{
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lpT = strchr(szCmdLine, ' '); // skip self name
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if (lpT)
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{
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szCmdLine = lpT;
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while (*szCmdLine == ' ')
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szCmdLine++; // skip spaces to end or first cmd
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}
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else
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{
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szCmdLine += strlen(szCmdLine); // point to NULL
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}
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}
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//=====================================================================
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//
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// parse command line looking for switches
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//
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for (lpch = szCmdLine; *lpch != '\0'; lpch += 1)
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{
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if (*lpch == '/' || *lpch == '-')
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{
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if (lpch[1] == 's' || lpch[1] == 'S')
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fBlankNow = TRUE;
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if (lpch[1] == 'c' || lpch[1] == 'C')
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hwndActive = GetActiveWindow ();
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if (lpch[1] == 'p' || lpch[1] == 'P')
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{
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fBlankNow = TRUE;
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hwndPreview = (HWND)IntToPtr(atoi(lpch+2));
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break;
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}
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lpch[0] = ' ';
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lpch[1] = ' ';
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}
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}
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//
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// try to load the IdleWild screen saver, if none specifed or
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// we are unable to load it then use the default one.
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//
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if (FInitIdleWild (szCmdLine))
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{
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if (fBlankNow)
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{
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ScrSetIgnore (1);
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ScrBlank (TRUE);
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}
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else
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{
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ScrInvokeDlg (hMainInstance, hwndActive);
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PostQuitMessage (0);
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}
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}
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else if (!fBlankNow || !FInitDefault ())
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{
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MessageBox (hwndActive, szNoConfigure, szAppName, MB_OK | MB_ICONEXCLAMATION);
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PostQuitMessage (0);
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}
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return TRUE;
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}
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//
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// run-time link to IWLIB.DLL
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//
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BOOL FInitIdleWild (LPSTR szCmdLine)
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{
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OFSTRUCT of;
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while (*szCmdLine == ' ')
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szCmdLine++;
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if (*szCmdLine == 0)
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return FALSE;
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if (-1 == OpenFile(szIdleWildDll, &of, OF_EXIST | OF_SHARE_DENY_NONE) ||
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-1 == OpenFile(szCmdLine, &of, OF_EXIST | OF_SHARE_DENY_NONE))
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return FALSE;
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if ((hIdleWildDll = LoadLibrary (szIdleWildDll)) == NULL)
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return FALSE;
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FInitScrSave = (SHORT (*) (HANDLE, HWND))GetProcAddress (hIdleWildDll, "FInitScrSave" );
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TermScrSave = (VOID (*) (VOID)) GetProcAddress (hIdleWildDll, "TermScrSave" );
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ScrBlank = (VOID (*) (SHORT)) GetProcAddress (hIdleWildDll, "ScrBlank" );
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ScrSetIgnore = (VOID (*) (SHORT)) GetProcAddress (hIdleWildDll, "ScrSetIgnore" );
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ScrLoadServer = (SHORT (*) (CHAR *)) GetProcAddress (hIdleWildDll, "ScrLoadServer");
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ScrSetServer = (SHORT (*) (CHAR *)) GetProcAddress (hIdleWildDll, "ScrSetServer" );
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ScrInvokeDlg = (VOID (*) (HANDLE, HWND)) GetProcAddress (hIdleWildDll, "ScrInvokeDlg" );
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//
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// must be a invalid dll?
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//
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if (!FInitScrSave || !TermScrSave)
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{
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FreeLibrary (hIdleWildDll);
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return FALSE;
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}
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//
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// init iwlib.dll
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//
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if (!FInitScrSave (hMainInstance, NULL)) // NULL hwnd???
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{
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FreeLibrary (hIdleWildDll);
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return FALSE;
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}
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//
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// load the screen saver on the command line.
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// if the load fails, abort
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//
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if (!ScrLoadServer (szCmdLine))
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{
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TermScrSave ();
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FreeLibrary (hIdleWildDll);
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return FALSE;
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}
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wmScrSave = RegisterWindowMessage ("SCRSAVE"); // REVIEW: for win 3.1
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fIdleWild = TRUE;
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return TRUE;
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}
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BOOL FTermIdleWild (VOID)
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{
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if (fIdleWild)
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{
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TermScrSave ();
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FreeLibrary (hIdleWildDll);
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}
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return TRUE;
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}
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//
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// init the default screen saver
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//
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BOOL FInitDefault (VOID)
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{
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WNDCLASS cls;
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HWND hwnd;
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HDC hdc;
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RECT rc;
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OSVERSIONINFO osvi;
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BOOL bWin2000 = FALSE;
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cls.style = 0;
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cls.lpfnWndProc = DefaultProc;
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cls.cbClsExtra = 0;
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cls.cbWndExtra = 0;
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cls.hInstance = hMainInstance;
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cls.hIcon = NULL;
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if (hwndPreview == NULL)
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{
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cls.hCursor = NULL;
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}
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else
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{
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cls.hCursor = LoadCursor(NULL,IDC_ARROW);
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}
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cls.hbrBackground = GetStockObject (BLACK_BRUSH);
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cls.lpszMenuName = NULL;
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cls.lpszClassName = szAppName;
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if (!RegisterClass (&cls))
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return FALSE;
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//
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// Make sure we use the entire virtual desktop size for multiple
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// displays
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//
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hdc = GetDC(NULL);
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GetClipBox(hdc, &rc);
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ReleaseDC(NULL, hdc);
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// On Win2000 Terminal Services we must detect the case where a remotte session
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// is on the disconnected desktop, because in this case GetClipBox() returns
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// an empty rect.
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if (IsRectEmpty(&rc)) {
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osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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if (GetVersionEx (&osvi)){
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if ((osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osvi.dwMajorVersion >= 5)) {
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bWin2000 = TRUE;
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}
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}
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if (bWin2000 && GetSystemMetrics(SM_REMOTESESSION)) {
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rc.left = 0;
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rc.top = 0;
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rc.right = GetSystemMetrics(SM_CXVIRTUALSCREEN);
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rc.bottom = GetSystemMetrics(SM_CYVIRTUALSCREEN);
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}
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}
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hwnd = CreateWindowEx (WS_EX_TOPMOST, szAppName, szAppName,
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WS_VISIBLE | ((hwndPreview == NULL) ? WS_POPUP : WS_CHILD),
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rc.left,
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rc.top,
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rc.right - rc.left,
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rc.bottom - rc.top,
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hwndPreview, NULL,
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hMainInstance, NULL);
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return hwnd != NULL;
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}
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LRESULT DefaultProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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static POINT ptLast;
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POINT ptMouse;
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switch (msg)
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{
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case WM_CREATE:
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GetCursorPos (&ptLast);
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break;
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case WM_DESTROY:
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PostQuitMessage (0);
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break;
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case WM_ACTIVATE:
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case WM_ACTIVATEAPP:
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if (wParam)
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break;
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case WM_LBUTTONDOWN:
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case WM_MBUTTONDOWN:
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case WM_RBUTTONDOWN:
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case WM_KEYDOWN:
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case WM_CHAR:
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if (hwndPreview == NULL)
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{
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PostMessage (hwnd, WM_CLOSE, 0, 0L);
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}
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break;
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case WM_MOUSEMOVE:
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if (hwndPreview == NULL)
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{
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GetCursorPos (&ptMouse);
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if (abs (ptMouse.x - ptLast.x) + abs (ptMouse.y - ptLast.y) > THRESHOLD)
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PostMessage (hwnd, WM_CLOSE, 0, 0L);
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}
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break;
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case WM_SETCURSOR:
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if (hwndPreview == NULL)
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{
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SetCursor (NULL);
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return 0L;
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}
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|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return DefWindowProc (hwnd, msg, wParam, lParam);
|
||
|
|
}
|