And*_*dge 4 c c++ windows driver
我试图以编程方式获取驱动程序的版本号.似乎是通过使用SetupDiEnumDriverInfo获取SP_DRVINFO_DATA结构并检查它来完成的DriverVersion field.
以下代码有效,但为同一驱动程序返回两个不同的版本.我的设备是一个自定义USB设备,带有一个.sys文件.我的机器只连接了一台设备.我指定DIGCF_PRESENT只查询当前连接的设备的驱动程序.
int main(void)
{
// Get the "device info set" for our driver GUID
HDEVINFO devInfoSet = SetupDiGetClassDevs(
&GUID_DEVINTERFACE_USBSPI, NULL, NULL,
DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
// Cycle through all devices currently present
for (int i = 0; ; i++)
{
// Get the device info for this device
SP_DEVINFO_DATA devInfo;
devInfo.cbSize = sizeof(SP_DEVINFO_DATA);
if (!SetupDiEnumDeviceInfo(devInfoSet, i, &devInfo))
break;
// Build a list of driver info items that we will retrieve below
if (!SetupDiBuildDriverInfoList(devInfoSet,
&devInfo, SPDIT_COMPATDRIVER))
return -1; // Exit on error
// Get all the info items for this driver
// (I don't understand why there is more than one)
for (int j = 0; ; j++)
{
SP_DRVINFO_DATA drvInfo;
drvInfo.cbSize = sizeof(SP_DRVINFO_DATA);
if (!SetupDiEnumDriverInfo(devInfoSet, &devInfo,
SPDIT_COMPATDRIVER, j, &drvInfo))
break;
printf("Driver version is %08x %08x\n",
(unsigned)(drvInfo.DriverVersion >> 32),
(unsigned)(drvInfo.DriverVersion & 0xffffffffULL));
}
}
SetupDiDestroyDeviceInfoList(devInfoSet);
return 0;
}
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在我的机器上打印:
Driver version is 00000000 000015d3
Driver version is 00020004 00000000
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在朋友的机器上,它打印:
Driver version is 00020004 00000000
Driver version is 00020004 00000000
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第二行与设备管理器报告的数字相匹配.
免责声明:我之前曾问过类似的问题.这是一个关于为什么SetupDiEnumDriverInfo返回多个驱动程序版本的新问题.
编写代码时,将输出所有可能的驱动程序.尝试执行以下操作仅过滤已安装的驱动程序:
SP_DEVINSTALL_PARAMS InstallParams;
if ( !SetupDiGetDeviceInstallParams( devInfoSet, &devInfo, &InstallParams ) )
{
//Error
}
else
{
InstallParams.FlagsEx |= DI_FLAGSEX_INSTALLEDDRIVER;
if ( !SetupDiSetDeviceInstallParams( devInfoSet, &devInfo, &InstallParams) )
{
//Errror
}
}
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我在http://doxygen.reactos.org/df/db2/dll_2win32_2devmgr_2misc_8c_a1cd0b33c1785392a37689433dc99e482.html找到了这个
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