BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  How to make an OCX visible          BorlandTalk.com Forum Index -> C++ Builder (ActiveX) View previous topic :: View next topic   Author Message ian Guest Posted: Thu Sep 23, 2004 10:23 am    Post subject: How to make an OCX visible Using C++ Builder 6 on XP pro. How do you make an OCX visible? I want the form to appear so that I can use the buttons etc on it. The OCX was created as an ActiveForm. I'm calling it manually rather than as a VCL drop in object. I have CoCreateInstance running, got the Interface and can set and get properties e.g. a custom 'SimLevel' property that shows its the right object. I tried setting the set_Visible property to 1 but that didn't work. Is there another value it should be set to? So anybody know how to make the thing appear? The folowing is the code to get the interface: //********************************** // CLSID and GUID are all setup if(SUCCEEDED(CoInitialize(0))) { if(SUCCEEDED(hr)) // Got the CLSID ok { // Create the instance hr = CoCreateInstance(CLSID_COMtest, NULL, CLSCTX_INPROC_SERVER, IID_IUnknown, (void**)&pInstance); if(SUCCEEDED(hr)) { // get the interface hr = pInstance->QueryInterface(IID_ICOMtest, (void**) &pCOMtestInterface) ; (hr == S_OK) { // test message with custom property MessageDlg("SimLevel = " + AnsiString(pCOMtestInterface->get_SimLevel()), mtInformation, TMsgDlgButtons() << mbOK, 0); pCOMtestInterface->set_Visible(1); // Does nothing... } } } //************************** Thanks in advance Ian. Back to top Mark Guerrieri Guest Posted: Fri Sep 24, 2004 1:42 am    Post subject: Re: How to make an OCX visible Try passing VARIANT_TRUE (i.e. -1) to set_Visible. Mark "ian" <ian_nospam_ (AT) matrix_nospam_multimedia (DOT) co.uk> wrote Quote: Using C++ Builder 6 on XP pro. How do you make an OCX visible? I want the form to appear so that I can use the buttons etc on it. The OCX was created as an ActiveForm. I'm calling it manually rather than as a VCL drop in object. I have CoCreateInstance running, got the Interface and can set and get properties e.g. a custom 'SimLevel' property that shows its the right object. I tried setting the set_Visible property to 1 but that didn't work. Is there another value it should be set to? So anybody know how to make the thing appear? The folowing is the code to get the interface: //********************************** // CLSID and GUID are all setup if(SUCCEEDED(CoInitialize(0))) { if(SUCCEEDED(hr)) // Got the CLSID ok { // Create the instance hr = CoCreateInstance(CLSID_COMtest, NULL, CLSCTX_INPROC_SERVER, IID_IUnknown, (void**)&pInstance); if(SUCCEEDED(hr)) { // get the interface hr = pInstance->QueryInterface(IID_ICOMtest, (void**) &pCOMtestInterface) ; (hr == S_OK) { // test message with custom property MessageDlg("SimLevel = " + AnsiString(pCOMtestInterface->get_SimLevel()), mtInformation, TMsgDlgButtons() << mbOK, 0); pCOMtestInterface->set_Visible(1); // Does nothing... } } } //************************** Thanks in advance Ian. Back to top ian Guest Posted: Fri Sep 24, 2004 8:30 am    Post subject: Re: How to make an OCX visible Thanks. I tried that but no effect either. Cheers Ian. "Mark Guerrieri" <markg11 (AT) comcast (DOT) net> wrote: Quote: Try passing VARIANT_TRUE (i.e. -1) to set_Visible. Mark "ian" <ian_nospam_ (AT) matrix_nospam_multimedia (DOT) co.uk> wrote in message news:4152a422$1 (AT) newsgroups (DOT) borland.com... Using C++ Builder 6 on XP pro. How do you make an OCX visible? I want the form to appear so that I can use the buttons etc on it. The OCX was created as an ActiveForm. I'm calling it manually rather than as a VCL drop in object. I have CoCreateInstance running, got the Interface and can set and get properties e.g. a custom 'SimLevel' property that shows its the right object. I tried setting the set_Visible property to 1 but that didn't work. Is there another value it should be set to? So anybody know how to make the thing appear? The folowing is the code to get the interface: //********************************** // CLSID and GUID are all setup if(SUCCEEDED(CoInitialize(0))) { if(SUCCEEDED(hr)) // Got the CLSID ok { // Create the instance hr = CoCreateInstance(CLSID_COMtest, NULL, CLSCTX_INPROC_SERVER, IID_IUnknown, (void**)&pInstance); if(SUCCEEDED(hr)) { // get the interface hr = pInstance->QueryInterface(IID_ICOMtest, (void**) &pCOMtestInterface) ; (hr == S_OK) { // test message with custom property MessageDlg("SimLevel = " + AnsiString(pCOMtestInterface->get_SimLevel()), mtInformation, TMsgDlgButtons() << mbOK, 0); pCOMtestInterface->set_Visible(1); // Does nothing... } } } //************************** Thanks in advance Ian. 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