本文整理汇总了C++中atl::CHeapPtr::AllocateBytes方法的典型用法代码示例。如果您正苦于以下问题：C++ CHeapPtr::AllocateBytes方法的具体用法？C++ CHeapPtr::AllocateBytes怎么用？C++ CHeapPtr::AllocateBytes使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类atl::CHeapPtr的用法示例。
在下文中一共展示了CHeapPtr::AllocateBytes方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: EnumDependents
BOOL CNTScmService::EnumDependents(DWORD dwServiceState, void* pUserData, ENUM_SERVICES_PROC lpEnumServicesFunc) const
{
//Validate our parameters
ATLASSUME(m_hService != NULL);
DWORD dwBytesNeeded;
DWORD dwServices;
BOOL bSuccess = EnumDependentServices(m_hService, dwServiceState, NULL, 0, &dwBytesNeeded, &dwServices);
DWORD dwLastError = GetLastError();
if (!bSuccess && (dwLastError == ERROR_MORE_DATA) || (dwLastError == ERROR_INSUFFICIENT_BUFFER)) //Note we use ERROR_INSUFFICIENT_BUFFER here even though it is not documented as a legal return value from EnumDependentServices here
{
//Allocate some memory for the API
ATL::CHeapPtr<ENUM_SERVICE_STATUS> lpServices;
if (!lpServices.AllocateBytes(dwBytesNeeded))
{
SetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
DWORD dwSize;
bSuccess = EnumDependentServices(m_hService, dwServiceState, lpServices.m_pData, dwBytesNeeded, &dwSize, &dwServices);
if (bSuccess)
{
BOOL bContinue = TRUE;
for (DWORD i=0; i<dwServices && bContinue; i++)
bContinue = lpEnumServicesFunc(pUserData, lpServices[i]);
}
}
return bSuccess;
}