/*****************************************************************************\ * * * scrnsave.h Windows NT 3.1 screensaver defines and definitions. * * * * Version 1.0 * * * * NOTE: windows.h must be #included first * * * * Windows NT NOTE: (Differences from Win 3.1 Screensavers) * * * * All Screensavers are required to have a Description string * * of no more than 25 chars for display by the Control Panel's * * Desktop applet. This is string 1 in the resource string * * table of the Windows 32-bit screen saver .SCR (.EXE) file. * * * * Passwords for Windows NT Screen Savers are handled by the * * Winlogon process. If the registry value: * * * * HKEY_CURRENT_USER\Control Panel\Desktop\ScreenSaverIsSecure * * * * is nonzero, Winlogon will ask for the User's login password * * before allowing the Screen Saver to exit. All password data * * and dialogs have been removed from individual Screensavers. * * * * * * Copyright (c) 1992-1996, Microsoft Corp. All rights reserved. * * * \*****************************************************************************/ #ifndef _INC_SCRNSAVE #define _INC_SCRNSAVE #include /* Assume byte packing throughout */ #ifdef __cplusplus extern "C" { /* Assume C declarations for C++ */ #endif /* __cplusplus */ /* MANDATORY string required in .RC file * This string should contain a less than 25 char name/description of the * screen saver. This string is what will be seen by the user in the Control * Panel's Desktop applet screen saver listbox. */ #define IDS_DESCRIPTION 1 /* Icon resource ID. * * This should be the first icon used and must have this resource number. * This is needed as the first icon in the file will be grabbed */ #define ID_APP 100 #define DLG_SCRNSAVECONFIGURE 2003 #define idsIsPassword 1000 #define idsIniFile 1001 #define idsScreenSaver 1002 #define idsPassword 1003 #define idsDifferentPW 1004 #define idsChangePW 1005 #define idsBadOldPW 1006 #define idsAppName 1007 #define idsNoHelpMemory 1008 #define idsHelpFile 1009 #define idsDefKeyword 1010 /* This function is the Window Procedure for the screen saver. It is * up to the programmer to handle any of the messages that wish to be * interpretted. Any unused messages are then passed back to * DefScreenSaverProc if desired which will take default action on any * unprocessed message... */ #ifdef UNICODE LRESULT WINAPI ScreenSaverProcW (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam); # define ScreenSaverProc ScreenSaverProcW #else LRESULT WINAPI ScreenSaverProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam); #endif /* This function performs default message processing. Currently handles * the following messages: * * WM_SYSCOMMAND: return FALSE if wParam is SC_SCREENSAVE or SC_CLOSE * * WM_DESTROY: PostQuitMessage(0) * * WM_SETCURSOR: By default, this will set the cursor to a null cursor, * thereby removing it from the screen. * * WM_LBUTTONDOWN: * WM_MBUTTONDOWN: * WM_RBUTTONDOWN: * WM_KEYDOWN: * WM_KEYUP: * WM_MOUSEMOVE: By default, these will cause the program to terminate. * Unless the password option is enabled. In that case * the DlgGetPassword() dialog box is brought up. * * WM_NCACTIVATE: * WM_ACTIVATEAPP: * WM_ACTIVATE: By default, if the wParam parameter is FALSE (signifying * that transfer is being taken away from the application), * then the program will terminate. Termination is * accomplished by generating a WM_CLOSE message. This way, * if the user sets something up in the WM_CREATE, a * WM_DESTROY will be generated and it can be destroyed * properly. * This message is ignored, however is the password option * is enabled. */ LRESULT WINAPI DefScreenSaverProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); /* A function is also needed for configuring the screen saver. The function * should be exactly like it is below and must be exported such that the * program can use MAKEPROCINSTANCE on it and call up a dialog box. Further- * more, the template used for the dialog must be called * ScreenSaverConfigure to allow the main function to access it... */ BOOL WINAPI ScreenSaverConfigureDialog (HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam); /* To allow the programmer the ability to register child control windows, this * function is called prior to the creation of the dialog box. Any * registering that is required should be done here, or return TRUE if none * is needed... */ BOOL WINAPI RegisterDialogClasses (HANDLE hInst); /* The following functions are called by DefScreenSaverProc and must * be exported by all screensavers using this model. */ /* * There are only three other points that should be of notice: * 1) The screen saver must have a string declared as 'szAppName' contaning the * name of the screen saver, and it must be declared as a global. * 2) The screen saver EXE file should be renamed to a file with a SCR * extension so that the screen saver dialog from the control panel can * find it when is searches for screen savers. */ #define WS_GT (WS_GROUP | WS_TABSTOP) #define MAXFILELEN 13 #define TITLEBARNAMELEN 40 #define APPNAMEBUFFERLEN 40 #define BUFFLEN 255 /* The following globals are defined in scrnsave.lib */ extern HINSTANCE hMainInstance; extern HWND hMainWindow; extern BOOL fChildPreview; extern TCHAR szName[TITLEBARNAMELEN]; extern TCHAR szAppName[APPNAMEBUFFERLEN]; extern TCHAR szIniFile[MAXFILELEN]; extern TCHAR szScreenSaver[22]; extern TCHAR szHelpFile[MAXFILELEN]; extern TCHAR szNoHelpMemory[BUFFLEN]; extern UINT MyHelpMessage; /* OPTIONAL - Win95 Only */ #define SCRM_VERIFYPW WM_APP /* * This message is sent to the main screen saver window when password * protection is enabled and the user is trying to close the screen saver. You * can process this message and provide your own validation technology. If you * process this message, you should also support the ScreenSaverChangePassword * function, described below. Return zero from this message if the password * check failed. Return nonzero for success. If you run out of memory or * encounter a similar class of error, return non-zero so the user isn't left * out in the cold. The default action is to call the Windows Master * Password Router to validate the user's password. */ void WINAPI ScreenSaverChangePassword( HWND hParent ); /* * You supply this if you provide your own authentication. Windows will call * it when the user wants to change the password. An implementation of this * function should present password change UI to the user. * You should only supply this function if you also hook the SCRM_VERIFYPW * message to validate passwords. * The default action is to call the Windows Master Password Router. */ #ifdef __cplusplus } #endif /* __cplusplus */ #include #endif /* !_INC_SCRNSAVE */