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POWrite ActiveX control in C# but use it in MFC
 

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    <p>The current projects are all written in <strong>VC6</strong> and <strong>VB6</strong>. It has been proved that .Net can write Active X controls for MFC use. So we'd like to write some active x controls using .Net with minimum changes in the legacy code. </p> <p>Here is the <strong>requirements</strong>:</p> <ol> <li>The Host application (written in VC6) must be able to find and load the active x control from the registered category.</li> <li>The active x control must support property pages.</li> <li>The active x control must support property persistence.</li> </ol> <p>Here is my <strong>questions</strong>:</p> <ol> <li>Is it possible to write Active X property pages using .Net WinForm Controls? And how to communicate between controls and corresponding properties in C#?</li> <li><p>How to register the Active X control under a certain category in C#? The following is a piece of sample code in MFC regarding to control registration.</p> <pre><code>STDAPI DllRegisterServer(void) { HRESULT hr; AFX_MANAGE_STATE(_afxModuleAddrThis); if (!AfxOleRegisterTypeLib(AfxGetInstanceHandle(), _tlid)) return ResultFromScode(SELFREG_E_TYPELIB); if (!COleObjectFactoryEx::UpdateRegistryAll(TRUE)) return ResultFromScode(SELFREG_E_CLASS); hr = CreateComponentCategory(CATID_CTRL_CAT, L"XXXX"); if (FAILED(hr)) return hr; hr = RegisterCLSIDInCategory(CATID_CONTROL, CATID_CTRL_CAT); if (FAILED(hr)) return hr; return NOERROR; } </code></pre> <p>The above registration has 3 steps, <strong>AfxOleRegisterTypeLib</strong>, <strong>CreateComponentCategory</strong> and <strong>RegisterCLSIDInCategory</strong>. How can we implement them in C#?</p></li> <li>What is the equivalent way in C# to achieve property persistence?</li> </ol> <p>Thank you in advance for any comments and helps!!!</p>
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