289 lines
5.6 KiB
C
289 lines
5.6 KiB
C
/*++
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Copyright (c) 1994-1998, Microsoft Corporation All rights reserved.
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Module Name:
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drvaplet.c
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Abstract:
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This module contains the driver routines for the project.
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Revision History:
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--*/
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//
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// Include Files.
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//
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#include "main.h"
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#include "drvaplet.h"
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//
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// Defines for Win16 builds.
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//
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#ifndef WIN32
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#define LoadLibrary16 LoadLibrary
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#define FreeLibrary16 FreeLibrary
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#define GetProcAddress16 GetProcAddress
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#endif
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//
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// Global Variables.
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//
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//
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// CplApplet.
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//
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const TCHAR *c_szCplApplet = TEXT("CPlApplet");
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const char *c_szCplAppletA = "CPlApplet";
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//
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// Typedef Declarations.
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//
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//
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// DRIVER_APPLET_INFO: the info we keep around about a driver applet.
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//
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typedef struct
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{
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HMODULE module;
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APPLET_PROC applet;
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HICON icon;
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} DRIVER_APPLET_INFO, *PDAI;
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//
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// GetDriverModule: gets the module.
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//
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////////////////////////////////////////////////////////////////////////////
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//
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// GetDriverModule
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//
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// Gets the module.
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//
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////////////////////////////////////////////////////////////////////////////
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HMODULE GetDriverModule(
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LPCTSTR name)
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{
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#ifdef WIN32
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#ifdef WINNT
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return (LoadLibrary(name));
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#else
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return (LoadLibrary16(name));
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#endif
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#else
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return (GetModuleHandle(name));
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#endif
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}
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////////////////////////////////////////////////////////////////////////////
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//
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// ReleaseDriverModule
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//
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////////////////////////////////////////////////////////////////////////////
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void ReleaseDriverModule(
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HMODULE module)
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{
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#ifdef WIN32
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#ifdef WINNT
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FreeLibrary(module);
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#else
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FreeLibrary16(module);
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#endif
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#else
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//
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// do nothing (got it with GetModuleHandle)
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//
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#endif
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}
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////////////////////////////////////////////////////////////////////////////
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//
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// OpenDriverApplet
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//
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// Opens a handle to the named driver applet.
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//
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////////////////////////////////////////////////////////////////////////////
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HDAP OpenDriverApplet(
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LPCTSTR name)
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{
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PDAI driver = (PDAI)LocalAlloc(LPTR, sizeof(DRIVER_APPLET_INFO));
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if (driver)
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{
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if ((driver->module = GetDriverModule(name)) != NULL)
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{
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if ((driver->applet = (APPLET_PROC)
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#ifdef WINNT
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GetProcAddress(driver->module, c_szCplAppletA)) != NULL)
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#else
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GetProcAddress16(driver->module, c_szCplApplet)) != NULL)
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#endif
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{
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union
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{
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NEWCPLINFO newform;
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CPLINFO oldform;
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} info = { 0 };
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CallDriverApplet( (HDAP) driver,
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NULL,
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CPL_NEWINQUIRE,
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0,
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(LPARAM)&info.newform );
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if (info.newform.dwSize == sizeof(info.newform))
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{
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driver->icon = info.newform.hIcon;
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return ((HDAP)driver);
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}
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//
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// NOTE: If the driver doesn't handle CPL_NEWIQUIRE, we must use CPL_INQUIRE
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// and LoadIcon the icon ourselves. Win32 doesn't provide a LoadIcon16, so
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// in Win32 the 16 bit side of the thunk for CPL_NEWINQUIRE does this. In
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// Win16, we do it right here.
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//
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#ifndef WIN32
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info.oldform.idIcon = 0;
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CallDriverApplet( (HDAP)driver,
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NULL,
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CPL_INQUIRE,
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0,
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(LPARAM)&info.oldform );
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if (info.oldform.idIcon)
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{
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driver->icon =
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LoadIcon( driver->module,
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MAKEINTRESOURCE(info.oldform.idIcon) );
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return ((HDAP)driver);
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}
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#endif
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}
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ReleaseDriverModule(driver->module);
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}
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LocalFree(driver);
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}
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return ((HDAP)0);
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}
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////////////////////////////////////////////////////////////////////////////
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//
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// CloseDriverApplet
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//
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// Closes a handle to a driver applet.
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//
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////////////////////////////////////////////////////////////////////////////
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void CloseDriverApplet(
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HDAP HDAP)
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{
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#define driver ((PDAI)HDAP)
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if (driver)
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{
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if (driver->icon)
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{
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DestroyIcon(driver->icon);
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}
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ReleaseDriverModule(driver->module);
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LocalFree(driver);
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}
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#undef driver
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}
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////////////////////////////////////////////////////////////////////////////
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//
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// GetDriverAppletIcon
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//
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// Gets a driver applet's icon (if any).
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//
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////////////////////////////////////////////////////////////////////////////
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HICON GetDriverAppletIcon(
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HDAP HDAP)
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{
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#define driver ((PDAI)HDAP)
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//
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// Must return a copy for the current process/task to own.
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//
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return ((driver && driver->icon) ? CopyIcon(driver->icon) : NULL);
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#undef driver
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}
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////////////////////////////////////////////////////////////////////////////
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//
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// CallDriverApplet
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//
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// Calls the driver applet (same syntax as CplApplet).
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//
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////////////////////////////////////////////////////////////////////////////
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LRESULT CallDriverApplet(
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HDAP HDAP,
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HWND wnd,
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UINT msg,
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LPARAM p1,
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LPARAM p2)
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{
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#define driver ((PDAI)HDAP)
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if (driver)
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{
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#ifdef WIN32
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return ( CallCPLEntry16( driver->module,
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(FARPROC16)driver->applet,
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wnd,
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msg,
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p1,
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p2 ) );
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#else
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return (driver->applet(wnd, msg, p1, p2));
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#endif
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}
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return (0L);
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#undef driver
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}
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