158 lines
5.5 KiB
C
158 lines
5.5 KiB
C
/*****************************************************************************\
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* *
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* cpl.h - Control panel extension DLL definitions *
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* *
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* Version 3.10 *
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* *
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* Copyright (c) 1992, Microsoft Corp. All rights reserved *
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* *
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******************************************************************************
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* General rules for being installed in the Control Panel:
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*
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* 1) The DLL must export a function named CPlApplet which will handle
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* the messages discussed below.
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* 2) If the applet needs to save information in CONTROL.INI minimize
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* clutter by using the application name [MMCPL.appletname].
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* 2) If the applet is refrenced in CONTROL.INI under [MMCPL] use
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* the following form:
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* ...
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* [MMCPL]
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* uniqueName=c:\mydir\myapplet.dll
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* ...
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*
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*
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* The order applet DLL's are loaded by CONTROL.EXE is:
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*
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* 1) MAIN.CPL is loaded from the windows system directory.
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*
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* 2) Installable drivers that are loaded and export the
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* CplApplet() routine.
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*
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* 3) DLL's specified in the [MMCPL] section of CONTROL.INI.
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*
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* 4) DLL's named *.CPL from windows system directory.
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*
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*/
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#ifndef _INC_CPL
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#define _INC_CPL
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#ifndef RC_INVOKED
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#pragma pack(1) /* Assume byte packing throughout */
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#endif /* RC_INVOKED */
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#ifdef __cplusplus
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extern "C" { /* Assume C declarations for C++ */
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#endif /* __cplusplus */
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/*
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* CONTROL.EXE will answer this message and launch an applet
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*
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* WM_CPL_LAUNCH
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*
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* wParam - window handle of calling app
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* lParam - LPSTR of name of applet to launch
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*
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* WM_CPL_LAUNCHED
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*
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* wParam - TRUE/FALSE if applet was launched
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* lParam - NULL
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*
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* CONTROL.EXE will post this message to the caller when the applet returns
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* (ie., when wParam is a valid window handle)
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*
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*/
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#define WM_CPL_LAUNCH (WM_USER+1000)
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#define WM_CPL_LAUNCHED (WM_USER+1001)
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/* A function prototype for CPlApplet() */
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typedef LRESULT (CALLBACK *APPLET_PROC)(HWND hwndCpl, UINT msg, LPARAM lParam1, LPARAM lParam2);
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/* The data structure CPlApplet() must fill in. */
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typedef struct tagCPLINFO
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{
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int idIcon; /* icon resource id, provided by CPlApplet() */
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int idName; /* name string res. id, provided by CPlApplet() */
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int idInfo; /* info string res. id, provided by CPlApplet() */
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LONG lData; /* user defined data */
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} CPLINFO, *PCPLINFO, FAR *LPCPLINFO;
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typedef struct tagNEWCPLINFO
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{
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DWORD dwSize; /* similar to the commdlg */
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DWORD dwFlags;
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DWORD dwHelpContext; /* help context to use */
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LONG lData; /* user defined data */
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HICON hIcon; /* icon to use, this is owned by CONTROL.EXE (may be deleted) */
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char szName[32]; /* short name */
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char szInfo[64]; /* long name (status line) */
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char szHelpFile[128];/* path to help file to use */
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} NEWCPLINFO, *PNEWCPLINFO, FAR *LPNEWCPLINFO;
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/* The messages CPlApplet() must handle: */
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#define CPL_INIT 1
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/* This message is sent to indicate CPlApplet() was found. */
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/* lParam1 and lParam2 are not defined. */
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/* Return TRUE or FALSE indicating whether the control panel should proceed. */
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#define CPL_GETCOUNT 2
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/* This message is sent to determine the number of applets to be displayed. */
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/* lParam1 and lParam2 are not defined. */
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/* Return the number of applets you wish to display in the control */
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/* panel window. */
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#define CPL_INQUIRE 3
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/* This message is sent for information about each applet. */
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/* lParam1 is the applet number to register, a value from 0 to */
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/* (CPL_GETCOUNT - 1). lParam2 is a far ptr to a CPLINFO structure. */
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/* Fill in CPL_INFO's idIcon, idName, idInfo and lData fields with */
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/* the resource id for an icon to display, name and description string ids, */
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/* and a long data item associated with applet #lParam1. */
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#define CPL_SELECT 4
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/* This message is sent when the applet's icon has been clicked upon. */
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/* lParam1 is the applet number which was selected. lParam2 is the */
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/* applet's lData value. */
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#define CPL_DBLCLK 5
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/* This message is sent when the applet's icon has been double-clicked */
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/* upon. lParam1 is the applet number which was selected. lParam2 is the */
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/* applet's lData value. */
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/* This message should initiate the applet's dialog box. */
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#define CPL_STOP 6
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/* This message is sent for each applet when the control panel is exiting. */
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/* lParam1 is the applet number. lParam2 is the applet's lData value. */
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/* Do applet specific cleaning up here. */
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#define CPL_EXIT 7
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/* This message is sent just before the control panel calls FreeLibrary. */
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/* lParam1 and lParam2 are not defined. */
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/* Do non-applet specific cleaning up here. */
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#define CPL_NEWINQUIRE 8
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/* this is the same as CPL_INQUIRE execpt lParam2 is a pointer to a */
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/* NEWCPLINFO structure. this will be sent before the CPL_INQUIRE */
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/* and if it is responed to (return != 0) CPL_INQUIRE will not be sent */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#ifndef RC_INVOKED
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#pragma pack()
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#endif /* RC_INVOKED */
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#endif /* _INC_CPL */
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