Windows 协议文档中所描述的协议规范中,错误码使用 HRESULT、Win32 错误码和 NTSTATUS 来描述。本文科普一下 HRESULT。...一个简单的例子 我们先举一个大家可能常用的 HRESULT 例子,这样后面的介绍能更简单一点。...规范中的 HRESULT 按照规范,HRESULT 的格式如下,其中首行的数字代表第几位(bit): 0 1 2 3 4 5~15 16~31 S R C N X Facility Code S: 1...break; } } 由于磁盘空间已满没有对应的 .NET Exception,所以我们只能通过提取 IOException 中的 HResult 属性来判断操作的 HRESULT 值。...& 0xFFFF; return errorCode == ERROR_DISK_FULL; } 参考资料 MS-ERREF: HRESULT - Microsoft Docs HRESULT
在c#代码中处理一些系统出现的异常的时候,常常需要对异常的HResult属性进行处理。...---- 于是我们就会写出以下代码 if(e.HResult==0x80030005) { ... } 然而有时候会惊奇的发现结果并没有如预期的进入if分支 so why 事实上如果你安装了Resharper...因为我们的HResult的值是uint,而Exception.HResult是int所以比较结果必然是false 那么怎么办呢?...都转成uint if((uint)e.HResult==0x80030005) { ... } 都转成int if(e.HResult==uncheck((int)0x80030005) { ......for an HRESULT of S_OK - Stack Overflow ---- 本文会经常更新,请阅读原文: https://xinyuehtx.github.io/post/HResult
win7系统,用c#调用Interop.SHDocVw.dll时,报了个对“ COM 组件的调用返回了错误 HRESULT E_FAIL”的错误。
registry keys: Microsoft-Hyper-V-Integration-Services-Package~31bf3856ad364e35~amd64~~6.3.9600.17388 [HRESULT
在Winform里面用AxWindowsMediaPlayer控件 ,控件放在tabControl里面,当切换选项卡时报了“灾难性故障 (异常来自 HRESULT:0x8000FFFF (E_UNEXPECTED...tabControl1_SelectedIndexChanged(object sender, EventArgs e) { #region 避免 灾难性故障 (异常来自 HRESULT
在组件对象模型(COM)开发中,Win32 SDK头文件、宏定义和HRESULT扮演着至关重要的角色。...HRESULT HRESULT是一个32位的值,用于表示函数调用的结果。它由以下几个部分组成: S (Severity):严重性,1表示失败,0表示成功。...使用HRESULT 在COM中,HRESULT的使用遵循以下规则: 成功与失败:使用SUCCEEDED和FAILED宏来判断函数调用是否成功或失败。...错误消息:使用FormatMessage函数可以根据HRESULT值获取错误消息的字符串表示。...例如,当你调用一个COM方法时,你可以通过检查其返回的HRESULT值来确定调用是否成功: HRESULT hr = CoCreateInstance(CLSID_MyComObject, NULL,
<< "[-] AmsiInitialize Failed" << std::endl; return hResult; } hResult = AmsiOpenSession...(amsiContext, &hSession); if (hResult !...<< "[-] AmsiOpenSession Failed" << std::endl; return hResult; } hResult = AmsiScanBuffer...<< "[-] AmsiInitialize Failed" << std::endl; return hResult; } hResult = AmsiOpenSession...<< "[-] AmsiOpenSession Failed" << std::endl; return hResult; } hResult = AmsiScanBuffer
; stdcall; function GetHostInfo(var pInfo: TDOCHOSTUIINFO): HRESULT; stdcall; function ShowUI...; stdcall; function HideUI: HRESULT; stdcall; function UpdateUI: HRESULT; stdcall; function...: BOOL): HRESULT; stdcall; function OnFrameWindowActivate(const fActivate: BOOL): HRESULT; stdcall...; stdcall; function HideUI: HRESULT; stdcall; function UpdateUI: HRESULT; stdcall; function...: BOOL): HRESULT; stdcall; function OnFrameWindowActivate(const fActivate: BOOL): HRESULT; stdcall
> & spDoc, CComPtr & spInnerDoc ) { HRESULT hr = E_FAIL; do { hr...HRESULT CDeal12306WebPage::InsertButtonInQueryPage( CComPtr & spDoc ) { HRESULT hr...其查找该节点的方法如下 HRESULT CDeal12306WebPage::QueryTicketsInfo( CComPtr & spDoc ) { HRESULT...HRESULT CDeal12306WebPage::GetQueryInfoInTr( CComPtr & spElem) { HRESULT hr = E_FAIL...HRESULT CDeal12306WebPage::StartQueryInQueryPage( CComPtr & spDoc ) { HRESULT hr
在此记录一下: 断言报错的代码如下: HRESULT CIoCPWorker::UnregIoTask(HRESULT hIokey) { ENTER_CALL("CIoCPWorker_UnregIoTask...看了一下S_OK和SUCCEEDED的声明: #define E_FAIL _HRESULT_TYPEDEF_(0x80004005L) #define S_OK ((HRESULT)0x00000000L...) #define S_FALSE ((HRESULT)0x00000001L) #define SUCCEEDED(hr) ((HRESULT)(hr) >= 0) #define FAILED...(hr) ((HRESULT)(hr) < 0) 和S_OK放在一起的是S_FALSE,怀疑和这个有关,上网查了一下,果然如此!...当自己写的函数接口返回值为HRESULT的时候,如果想要指明其出错,并且必须被处理时,应返回E_FAIL。
DWORD_PTR dw) throw()/ {/ _ComMapClass* p = (_ComMapClass*)pv;/ p->Lock();/ HRESULT...[cpp] view plain copy static HRESULT WINAPI InternalQueryInterface(void* pThis, const _ATL_INTMAP_ENTRY...* pEntries, REFIID iid, void** ppvObject) { HRESULT hRes = AtlInternalQueryInterface(pThis, pEntries...*ppvObject = pUnk; return S_OK; } else //actual function call { HRESULT...[cpp] view plain copy HRESULT _InternalQueryInterface(REFIID iid, void** ppvObject) throw() / { return
Lock() throw() { EnterCriticalSection(&m_sec); return S_OK; } HRESULT... Unlock() throw() { LeaveCriticalSection(&m_sec); return S_OK; } HRESULT...CComAutoCriticalSection::Init should never be called HRESULT Term(); // Not implemented. ... S_OK; } HRESULT Unlock() throw() { return S_OK; } HRESULT Init() throw() { return S_OK; ... CComCritSecLock::Lock() throw() { HRESULT hr; ATLASSERT( !
常量定义 typedef long HRESULT; enum HResult { S_OK = ((HRESULT)0x00000000),...E_POINTER = _HRESULT_TYPEDEF_(0x80004003), /**< 无效指针 */ E_HANDLE = _HRESULT_TYPEDEF...*/ }; /// 判定 HRESULT 值是否为成功值 #define SUCCEEDED(Status) ((HRESULT)(Status) >= 0) /// 判定...常量定义 typedef long HRESULT; enum HResult { S_OK = ((HRESULT)0x00000000), /**< 成功,值为0 */ S_FALSE...SUCCEEDED(Status) ((HRESULT)(Status) >= 0) /// 判定 HRESULT 值是否为失败值 #define FAILED(Status) ((HRESULT)(
*Cancel = VARIANT_TRUE; CComPtr spWeb; HRESULT...& stTrainPassenger ) { HRESULT hr = E_FAIL; do { CComPtr spBody;...其中几个经常用的函数是 HRESULT GetElementCollection(CComPtr & spElem, CComPtr & spElemCollection ); enum...& cstrClassName, CComPtr & spResElem); // 通过TagName获取指定节点下第一个tag为cstrTagName的子节点 HRESULT...); enum EQUERYTYPE { EID, ETAGNAME, ECLASSNAME, }; // 通过ID获取指定节点下第一个ID为cstrID的子节点 HRESULT
(); HRESULT SetComSecLevels(); HRESULT ObtainLocator2WMI(CComPtr& pLoc); HRESULT...HRESULT CWMI::InitialCom() { HRESULT hr = E_FAIL; do { hr = CoInitializeEx(0, COINIT_MULTITHREADED...HRESULT CWMI::ObtainLocator2WMI(CComPtr& pLoc) { HRESULT hr = E_FAIL; do {...HRESULT CWMI::Connect2WMI( CComPtr pLoc,CComPtr& pSvc ) { HRESULT hr...HRESULT CWMI::SetProxySecLevels( CComPtr pSvc ) { HRESULT hr = E_FAIL; do {
; } ptr = IntPtr.Zero; return HResult.E_NOTIMPL; } // 为了简洁起见,这里省略了接口中所有70...然后我们只需要调用它们,确保将对象的地址作为第一个参数传递,因为它们是实例方法: public HResult QueryInterface(in Guid guid, out IntPtr ptr)...{ var func = (delegate* unmanaged)(*VTable); return...func(_self); } 我们的包装器可以直接在 ICorProfilerCallback.Initialize中使用,以检索 ICorProfilerInfo的实例: public HResult...var result = unknown.QueryInterface(iCorProfilerInfo3Guid, out var ptr); if (result == HResult.S_OK
常量定义 typedef long HRESULT; enum HResult { S_OK = ((HRESULT)0x00000000), /**< 成功,值为0 */ S_FALSE...= _HRESULT_TYPEDEF_(0x80004001), /**< 接口未实现 */ E_OUTOFMEMORY = _HRESULT_TYPEDEF_(0x8007000E), /**<...= _HRESULT_TYPEDEF_(0x80070005), /**< 访问拒绝 */ E_PENDING = _HRESULT_TYPEDEF_(0x8000000A), /**< 操作被挂起...*/ E_UNEXPECTED = _HRESULT_TYPEDEF_(0x8000FFFF) /**< 未预料的错误 */ }; /// 判定 HRESULT 值是否为成功值 #define...SUCCEEDED(Status) ((HRESULT)(Status) >= 0) /// 判定 HRESULT 值是否为失败值 #define FAILED(Status) ((HRESULT)
BOOL CDeal12306WebPage::IsBookingPage( CComPtr & spDoc, CComBSTR & bstrUrl ) { HRESULT...& vecStSingleinfo ) { HRESULT hr = E_FAIL; do { // 下标没有从0开始!...HRESULT CDeal12306WebPage::AddPassenger( CComPtr & spTableQrTbody ) { HRESULT hr =...HRESULT CDeal12306WebPage::SetCaptchaEx( CComPtr& spTableQrTbody ) { HRESULT hr = E_FAIL...于是完整的预订流程是 HRESULT CDeal12306WebPage::BookTickets( CComPtr & spDoc ) { HRESULT hr
在C++中的原型是: HRESULT JITInlining(FunctionID callerId, FunctionID calleeId, BOOL *pfShouldInline); 一个简单的...C#版本转换可能是: HResult JITInlining(FunctionId callerId, FunctionId calleeId, in bool pfShouldInline);...CreateInstance(IntPtr outer, in Guid guid, out IntPtr instance); HResult LockServer(bool @lock);...; } public HResult LockServer(bool @lock) { return default; } public HResult...; } ptr = IntPtr.Zero; return HResult.E_NOTIMPL; } public int AddRef()
\Common/MyWindows.h:83:19: note: expanded from macro 'E_NOTIMPL' #define E_NOTIMPL ((HRESULT)0x80004001L...\Common/MyWindows.h:84:23: note: expanded from macro 'E_NOINTERFACE' #define E_NOINTERFACE ((HRESULT)...\Common/MyWindows.h:85:17: note: expanded from macro 'E_ABORT' #define E_ABORT ((HRESULT)0x80004004L)...MyWindows.h:87:31: note: expanded from macro 'STG_E_INVALIDFUNCTION' #define STG_E_INVALIDFUNCTION ((HRESULT...\Common/MyWindows.h:88:23: note: expanded from macro 'E_OUTOFMEMORY' #define E_OUTOFMEMORY ((HRESULT)
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