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Re: Catching Access Violations Nick Blumhardt4-Jul-01 17:42 Nick Blumhardt 4-Jul-01 17:42  Answered my own question- you can only catch them with the ellipsis if anyone's interested in this, check out _set_se_translator() in the MSDN cheers \ nb ActiveX controls in Internet Explorer Derek Waters4-Jul-01 16:21 Derek Waters 4-Jul-01 16:21  Hi, I'm creating an ActiveX control to be embedded into a web page. This control contains a child dialog with a number of controls in it. The problem is that certain key presses are not received by this child dialog, specifically, TAB, cursor keys and (importantly) Backspace. I understand that certain key presses such as TAB and cursor keys require PreTranslateMessage to be overridden in the COleControl derived class. I have done this. I also know that I should be calling LockInPlaceActive on the control when it is activated so that I can capture these WM_KEYDOWN messages, but when I debug this control when it is embedded into a web page (and viewed in Internet Explorer), LockInPlaceActive always returns FALSE. Does Internet Explorer disallow in place active? Is there any way that pressing Backspace in a child Edit control of the ActiveX control will actually edit the text rather than returning to the previous web page? Thanks in advance. Derek Waters Re: ActiveX controls in Internet Explorer Michael Dunn4-Jul-01 16:26 Michael Dunn 4-Jul-01 16:26  You need to implement IInputObject to receive those keystrokes. Search for IInputObject in MSDN - I know I've come across at least one article that describes how to do what you want. --Mike-- http://home.inreach.com/mdunn/ "Holding the away team at bay with a non-functioning phaser was an act of unmitigated gall. I admire gall."   -- Lt. Cmdr. Worf Re: ActiveX controls in Internet Explorer Derek Waters5-Jul-01 14:52 Derek Waters 5-Jul-01 14:52  Thanks Michael, I actually found that Knowledge Base article "Q168777 - PRB: MFC ActiveX Control in IE Doesn't Detect Keystrokes" helped (with a bit of fiddling). Derek. ClassWizard "new Class from type lib" help 4-Jul-01 14:01 4-Jul-01 14:01  Hello All I use ClassWizard to generate a class derived from COleDispatchDriver to warp around a COM object, but the method that get generated say "method 'SessionOpened' not emitted because of invalid return type or parameter type" anyone has any idea why?? psksvp/ ======================== class INoteAcceptorEvents : public COleDispatchDriver { public: INoteAcceptorEvents() {} // Calls COleDispatchDriver default constructor INoteAcceptorEvents(LPDISPATCH pDispatch) : COleDispatchDriver(pDispatch) {} INoteAcceptorEvents(const INoteAcceptorEvents& dispatchSrc) : COleDispatchDriver(dispatchSrc) {} // Attributes public: // Operations public: // method 'SessionOpened' not emitted because of invalid return type or parameter type // method 'SessionClosed' not emitted because of invalid return type or parameter type // method 'UnableToOpenSession' not emitted because of invalid return type or parameter type // method 'LockGranted' not emitted because of invalid return type or parameter type // method 'LockTimeOut' not emitted because of invalid return type or parameter type // method 'LockReleased' not emitted because of invalid return type or parameter type // method 'AvailabilityChanged' not emitted because of invalid return type or parameter type // method 'XFSErrorEvent' not emitted because of invalid return type or parameter type // method 'BanknotesEncashed' not emitted because of invalid return type or parameter type // method 'BanknoteProcessingComplete' not emitted because of invalid return type or parameter type // method 'BanknotesRefunded' not emitted because of invalid return type or parameter type // method 'BankNotesInRefundSlotError' not emitted because of invalid return type or parameter type // method 'BanknotesRejected' not emitted because of invalid return type or parameter type // method 'BanknotesTaken' not emitted because of invalid return type or parameter type // method 'Enabled' not emitted because of invalid return type or parameter type // method 'EscrowFull' not emitted because of invalid return type or parameter type // method 'NoBanknotesEntered' not emitted because of invalid return type or parameter type // method 'UnableToEnable' not emitted because of invalid return type or parameter type // method 'UnableToEncash' not emitted because of invalid return type or parameter type // method 'UnableToRefund' not emitted because of invalid return type or parameter type // method 'BanknotesInserted' not emitted because of invalid return type or parameter type // method 'UnableToClear' not emitted because of invalid return type or parameter type // method 'Cleared' not emitted because of invalid return type or parameter type // method 'BanknotesWithdrawn' not emitted because of invalid return type or parameter type // method 'BNAExceptionEvent' not emitted because of invalid return type or parameter type }; Re: ClassWizard Nick Van den Abbeele4-Jul-01 21:14 Nick Van den Abbeele 4-Jul-01 21:14  Are the intefaces of the COM object using oleautomation compatible types ? It could be that you are trying to make a wrapper object for a COM object with a custom (c++) interface by using COleDispatchDriver. -Nick- DAO FindFirst otvac4-Jul-01 13:58 otvac 4-Jul-01 13:58  I'm VERY new to vc++. I am attempting to use DAO's findfirst function. All works OK unless there is an apostophe in the query string (for example "Joe's Place"). Code sample: m_pMySet->FindFirst("[Favorite Bars] = 'Joe's Place'"); Will not work, but m_pMySet->FindFirst("[Favorite Bars] = 'Joes Place'"); will. Any help appreciated Richard Re: DAO FindFirst Nick Blumhardt4-Jul-01 18:10 Nick Blumhardt 4-Jul-01 18:10  Hi! Try doubling up on apostrophes within the string you're looking for... e.g.: m_pMySet->FindFirst ("[Favourite Bars] = 'Joe''s Place'"); this is how SQL Server treats them, anyway nb Re: DAO FindFirst 5-Jul-01 1:23 5-Jul-01 1:23  Thans Nick, I'll give it a try! Richard Re: DAO FindFirst Hadi Rezaee5-Jul-01 9:47 Hadi Rezaee 5-Jul-01 9:47  Hi, In this example Favorite Bars is field name ? My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie Re: DAO FindFirst otvac5-Jul-01 14:26 otvac 5-Jul-01 14:26  Hi, Yes Favourite Bars is a field name. FindFirst works OK until a key is passed that contains an apostrophe (Joe's Place, for example). I've tried everything I know to work around this (which isn't much). All ideas appreciated! Richard type cast a CString to a LPTSTR Jose Cruz4-Jul-01 10:29 Jose Cruz 4-Jul-01 10:29  How can I type cast a CString to a LPTSTR to avoid this error: 'type cast' : cannot convert from 'char *(__thiscall CString::*)(int)' to 'char *' Re: type cast a CString to a LPTSTR Oscar Londono4-Jul-01 10:35 Oscar Londono 4-Jul-01 10:35  Try CString::GetBuffer.;) Oscar L. Re: type cast a CString to a LPTSTR Jose Cruz4-Jul-01 10:37 Jose Cruz 4-Jul-01 10:37  I did but I get a type cast error too. Re: type cast a CString to a LPTSTR Jose Cruz4-Jul-01 10:44 Jose Cruz 4-Jul-01 10:44  Code problem: This is the structure of rvi: typedef struct _RVITEM { UINT nMask; INT iItem; INT iSubItem; LPTSTR lpszText; INT iTextMax; INT iTextColor; INT iImage; INT iCheck; INT iBkColor; UINT nPreview; INT iIndent; UINT nState; LPARAM lParam; INT iOverlay; _RVITEM() : nMask(0), iItem(RVI_INVALID), iSubItem(-1), lpszText(NULL), iTextMax(0), iTextColor(-1), iImage(-1), iCheck(-1), iBkColor(-1), nPreview(0), iIndent(-1), nState(0), lParam(0), iOverlay(0) {}; } RVITEM, FAR* LPRVITEM; CString strDato; //The followin returns a CString: pBdeDb->GetFieldAsString(1,&bIsBlank); strDato = pBdeDb->GetFieldAsString(1,&bIsBlank); //strncpy(strDato, Dato, strDato.GetLength()); rvi.iSubItem = 0; rvi.lpszText = strDato.GetBuffer;//<--------------Problem--------- rc.SetItem(&rvi); Re: type cast a CString to a LPTSTR Oscar Londono4-Jul-01 10:51 Oscar Londono 4-Jul-01 10:51  Sorry. Use -> strDato.GetBuffer(0); But, remember that this buffer is temporary if strDato is local variable.!! To avoid this, create a buffer : rvi.lpszText = new char[strDato.GetLength()]; strcpy(rvi.lpszText, strDato); Oscar L. Re: type cast a CString to a LPTSTR Jose Cruz4-Jul-01 11:02 Jose Cruz 4-Jul-01 11:02  Thank you very much. Re: type cast a CString to a LPTSTR Carlos Antollini4-Jul-01 11:22 Carlos Antollini 4-Jul-01 11:22  Te aconsejo usar strcpy(rvi.lpszText, strDato.GetBuffer(0)); Cheers!!! Carlos Antollini. Re: type cast a CString to a LPTSTR Oscar Londono4-Jul-01 11:42 Oscar Londono 4-Jul-01 11:42  Ese tambien funciona. La diferencia esta en que la primera devuelve un LPCTSTR (que es constante y es menos peligrosa) y la segunda devuelve un LPTSTR que se puede modificar directamente. Si deseas poder usar cast: strcpy(rvi.lpszText, (LPCTSTR) strDato); Oscar L. Re: type cast a CString to a LPTSTR Jose Cruz4-Jul-01 12:05 Jose Cruz 4-Jul-01 12:05  Abusando de tu amabilidad: Podrias enseñarme como convierto de: double a LPTSTR. BOOL PTSTR. COleDateTime a LPTSTR. Long a LPTSTR. int a LPTSTR. Re: type cast a CString to a LPTSTR Oscar Londono4-Jul-01 12:30 Oscar Londono 4-Jul-01 12:30  Jose! Dale un vistazo a la documentación de CString::Format con la cual podes realizar las conversiones tipo sprintf. De igual forma COleDateTime tambien tiene el método COleDataTime::Format. Oscar L. Re: type cast a CString to a LPTSTR Jose Cruz4-Jul-01 12:38 Jose Cruz 4-Jul-01 12:38  y que tal de int, long y BOOL a LPTSTR Re: type cast a CString to a LPTSTR Jose Cruz4-Jul-01 12:15 Jose Cruz 4-Jul-01 12:15  Gracias. Podrias echarme la mno con mi otra pregunta. de como convertir de los otros diferentes tipos de datos a LPTSTR Re: type cast a CString to a LPTSTR Carlos Antollini5-Jul-01 4:35 Carlos Antollini 5-Jul-01 4:35  Usa wsprintf. LPTSTR str = NULL; int n = 1000; malloc((LPTSTR)str, 256); //or the size that you want wsprintf(str, "%d", n); //int -> LPTSTR Check the documentatión about wsprintf for other types. Carlos Antollini. Re: type cast a CString to a LPTSTR Carlos Antollini5-Jul-01 4:43 Carlos Antollini 5-Jul-01 4:43  También tenes las funciones itoa() y ltoa() para convertir the int y long a Ascii luego lo convertis a LPCTSTR. El booleano es sencillo. BOOL bVAl = TRUE; LPTSTR str = bVal ? "TRUE": "FALSE"; Saludos Carlos Antollini.

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