hresult 0x800706ba

PushTestFilter : public CSource{public:// 唯一能创建该类实例的接口 static CUnknown * WINAPI CreateInstance(LPUNKNOWN lpunk, HRESULT *phr); private://只能通过CreateInstance（）的调用创建实例PushTestFilter(LPUNKNOWN lpunk, HRESULT *phr);}; 这里有2点需要注意： 构造函数PushTestFilter（）是private的，不是一般的public！！！！！！！！！！！CreateInstance（）函数是static的，因为它不能通过对象来调用！！！！ 2个函数的具体实现如下： //构造函数，注意这里是private属性的，不是public，//所以要创建它的实例，只能是通过CreateInstance()函数的方式PushTe

UnitForm_main;Interfaceuseswinapi.windows, Winapi.messages, System.sysutils, System.variants, system.classes, Vcl.graphics, Vcl.Controls, Vc L.forms, Vcl.dialogs, Vcl.stdctrls, ActiveX, Comobj, Shlobj, Shlwapi;typeTformmain=class(Tform, Iquerycontinue, Iusernotificationcallback) Button1:tbutton; Checkbox1:tcheckbox; procedureButton1Click (Sender:tobject); procedureformcreate (Sender:tobject); procedureFormdestroy (Sender:tobject); PrivateI:iusernotification2; Public functionQuerycontinue:

(){Intptr hconnmgr = connmgrapireadyevent (); Bool bavailbale = false;Uint dwresult = waitforsingleobject (hconnmgr, 2000 ); If (dwresult = 0){Bavailbale = true;} // CloseIf (hconnmgr. toint32 ()! = 0) closehandle (hconnmgr ); Return bavailbale;}/// /// Ing URL/// /// /// /// /// Public int mapurlandguid (string lpszurl, ref guid guidnetworkobject, ref string pcsdesc){If (lpszurl = NULL | lpszurl. Length Return 0; Uint nindex = 0;Int hresult

-cde1-4bf1-a28e-e1477e7c74b8), dual, nonextensible, pointer_default (unique)]interface iwelcome:idispatch{ [ID (1)] HRESULT greeting ([in] BSTR name, [out, retval] bstr* message);};The IDL file also defines the content of the type library, which is a COM object that implements the Iwelcome interface (coclass)[ uuid (fbb80a75-06e1-452b-88ba-f7b00ed151a9), version (1.0),]library comserverlib{ [ uuid (85567ACE-7031-4246-9e81-

First configure the DIRECTX11 basic environment to create the DIRECTX11 render base class. Then create an Elf class to generate the sprite The header file is defined as follows: #pragma once #ifndef _gamespirt_h_ #define _gamespirt_h_ #include The source file is defined as follows: #include Then render the scene: The header file is defined as follows: #pragma once #ifndef _scenedemo_h_ #define _scenedemo_h_ #include "Direct3DBase.h" #include "GameSpirt.h" class Scenedemo :p ublic direct3

introduction.If you do not know how to install the configuration MySQL can refer to this address: Click to open the linkTwo. Connect to MySQL by ADO mode1. Import the ADO database and add the following statement to your program to import the ADO database2. Initializing the COM environmentInitialize COM environment afxoleinit (); 3. Create a data table structure to hold the content retrieved from the databaseSuppose a data table has only two fields: User ID and user nametypedef struct _OBJ_USER{

function to obtain the function of this interface. You can implement this function by yourself. Generally, we give the control a unique ID in the document for easy access. First, we need to find this element in the document and use ID as the parameter. ExampleCode: (Refer to the mfc7.0Source code) // Document modified at: Sunday, August 18,200 2 11:04:50, by user: jiangsheng, from computer: KFB// Access the element interface by name Hresult cd

C = 0;C = A + B;Return C;}Public float Ladd (float a, float B){Float C = 0;C = A + B;Return C;}}} (2) write the calling program using vc6.0 Use vc6.0 to write and create the MFC Application usecom. The project type is MFC Appwizard (exe) Add the following in stdafx. h: # Import "addcom. TLB"Using namespace addcom; Program code: Void cusecomdlg: onbuttonuse (){// Todo: add your control notification handler code hereInt dresult;Float fresult;Cstring strresult; Coinitialize (null); //

Getdestopwindow obtains the handle of the desktop window, but it is not the window containing the icon we see. The window containing the icon is actually one of the rows topwindow.Window. To be exact, desktopWindow contains a subwindow with no title and the class name "shelldll_defview". This word window also contains a untitled and Class Name"Syslistview32" subwindow -- this is the window that actually contains the desktop icon. To operate the desktop icon, use the following functions,Hwnd get

the program into three steps: 1. Build a DirectDraw surface ). 2. Extract video streams from files (possibly audio ). 3. Play video streams on the DirectDraw surface. Necessary variables: Ddsurfacedesc ddsd;Idirectdraw * PDD;Idirectdrawsurface * pprimarysurface;Imultimediastream * pmmstream; The imultimediastream interface is the highest-level interface object in DirectShow. It can contain one or more multimedia objects. These multimedia objects can be of different types, such as

new instance of the Internet Explorer browser. In some cases, BHO is also applicable to Windows Resource Manager.Generally, a site is an intermediate object located between the container object and the contained object. Through it, container objects are managed to accommodate the content of objects, so internal functions of objects are available. Therefore, the container must implement the IoleClientSite interface, and the IOleObject interface must be implemented for the contained objects. By c

HRESULT CVideoSource: RenderStream (){// CoInitialize (NULL );HRESULT hr = NULL;Hr = m_pBuilder-> RenderStream ( PIN_CATEGORY_PREVIEW, // PIN_CATEGORY_CAPTURE, // Pin category MEDIATYPE_Video, // Media typeM_pVideoCap, // Capture filterNULL, // m_pVidCompress, // Compression filter (optional)NULL // m_pVideoRender // Multiplexer or renderer filter);If (hr = VFW_S_NOPREVIEWPIN){// Preview was faked up for u

# Include # Include # Include # Include # Include # Include # Include //////////////////////////////////////// ////////////////////////////////// // Function name: deletetask // Function: deletes a specified task scheduler. // Parameter description: lpcwsztaskname: name of the task plan to be deleted //////////////////////////////////////// ////////////////////////////////// Hresult deletetask (maid ); //////////////////////////////////////// ///////

encapsulate the cmath class into a dynamic link library (DLL, dynamic link library.When using this technology, all the methods of cmath will be added to the export list of cmath DLL, And the linker will generate an import library ). This library exposes the symbol of the cmath method member. When the customer links to import data into the database, some stubs will be introduced into the executable file, which notifies the loader to dynamically load the cmath DLL at runtime.When cmath is in DLL,

not only uses proxy/stub for remote independence: proxy/stub is also used for thread independence, this will be discussed in detail later on the com thread mode.-The proxy/stub code is based on interfaces rather than objects.-The return value of the COM method that requires remote execution usually needs to be hresult (in fact, it is recommended that any COM method use this as the return value ). This is because when communication between the client

newenum HRESULT { E_INVALIDARG, E_FAIL, S_OK,};class LightNode : public SceneNode{protected:LightProperties m_LightProps;public:LightNode(const ActorId actorId, WeakBaseRenderComponentPtr renderComponent, const LightProperties props, const Mat4x4 *t);};class D3DLightNode9 : public LightNode{public:D3DLightNode9(const ActorId actorId, WeakBaseRenderComponentPtr renderComponent, const LightProperties lightProps, const Mat4x4 *t): LightNode(act

support keyboard input applications. It has a lot of functions that can automatically handle duplicate keys, can convert keys into ASCII characters, and so on, but these functions are not needed by the game, and this leads to a waste of more precious processor cycles.5. WIN32 Keyboard Processing code Although you can catch some keys (such as ALT) for you, but this requires special message processing to be able to get the correct operation.6. Message processing is not the fastest thing in the wo

Myfilter//filter ClassID, Cmysourcefilter::createinstance//filter instantiation interface, NULL, sudballax}//amoviesetup_ Filter Object}; int g_ctemplates = sizeof (g_templates)/sizeof (G_templatEs[0]); Third, heavy duty DllRegisterServer View plain Copy to clipboard print? regfilter2rf2filterreg={ 1, //pin uses Amoviesetup_pin, so the version is 1 merit_normal,//merit. 1, //numberofpins. sudPins// Pointertopininformation. }; stdapidllregisterserver (void) {

"; [ Object UUID (77506E08-D9FB-4F45-85E0-376F5187AF21), Dual Nonextensible, helpstring ("Iatlcomserver Interface"), Pointer_default (Unique) ] Interface iatlcomserver:idispatch{ [Propget, ID (1), helpstring ("Property Name")] HRESULT Name ([out, retval] bstr* pVal); [PropPut, ID (1), helpstring ("Property Name")] HRESULT Name ([in] BSTR newval); }; [ UUID (9136eee6-ecee-4237-90b6-c38275ef2d82), Version

This series of articles by Net_assassin finishing, reproduced please indicate the source. http://blog.csdn.net/net_assassin/article/category/1100363 Author: Net_assassin e-mail: net_assassin@hotmail.com look forward to interacting with like-minded friends ID3DXSprite objects are a great surprise to programmers who plan to use Direct3D to write 2D games. The advantage of this is that the full 3D renderer is ready to serve you at the same time as the previous implementation (DirectDraw) a