描述:
用MSDN的例子，写了个最简单的
#include <windows.h>
LONG DriverProc(DWORD dwDriverId, HDRVR hdrvr, UINT msg,
LONG lParam1, LONG lParam2)
{
DWORD dwRes = 0L;
switch (msg) {
case DRV_LOAD:
// Sent when the driver is loaded. This is always
// the first message received by a driver.
dwRes = 1L; // returns 0L to fail
break;
case DRV_FREE:
// Sent when the driver is about to be discarded.
// This is the last message a driver receives
// before it is freed.
dwRes = 1L; // return value ignored
break;
case DRV_OPEN:
// Sent when the driver is opened.
dwRes = 1L; // returns 0L to fail
break; // value subsequently used
// for dwDriverId.
case DRV_CLOSE:
// Sent when the driver is closed. Drivers are
// unloaded when the open count reaches zero.
dwRes = 1L; // returns 0L to fail
break;
case DRV_ENABLE:
// Sent when the driver is loaded or reloaded and
// when Windows is enabled. Install interrupt
// handlers and initialize hardware. Expect the
// driver to be in memory only between the enable
// and disable messages.
dwRes = 1L; // return value ignored
break;
case DRV_DISABLE:
// Sent before the driver is freed or when Windows
// is disabled. Remove interrupt handlers and place
// hardware in an inactive state.
dwRes = 1L; // return value ignored
break;
case DRV_INSTALL:
// Sent when the driver is installed.
dwRes = DRVCNF_OK; // Can also return
break; // DRVCNF_CANCEL
// and DRV_RESTART
case DRV_REMOVE:
// Sent when the driver is removed.
dwRes = 1L; // return value ignored
break;
case DRV_QUERYCONFIGURE:
// Sent to determine if the driver can be
// configured.
dwRes = 0L; // Zero indicates configuration
break; // NOT supported
case DRV_CONFIGURE:
// Sent to display the configuration
// dialog box for the driver.
dwRes = DRVCNF_OK; // Can also return
break; // DRVCNF_CANCEL
// and DRVCNF_RESTART
default:
// Process any other messages.
return DefDriverProc (dwDriverId, hdrvr,
msg, lParam1, lParam2);
}
return dwRes;
}
#include <windows.h>
int main()
{
HDRVR hdr;
if ((hdr = OpenDriver(L"test", NULL, NULL)) <= 0)
return -1;
CloseDriver(hdr, NULL, NULL);
return 0;
}
用这个main调用的时候怎么出First-chance exception in test.exe (NTDLL.DLL): 0xC0000005: Access Violation.