C / C++ / MFC

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Database Applications 15-Apr-01 2:41 15-Apr-01 2:41  Hi everyone. For a database applcation (managing either small or large amount of data), do you build GUI interfaces/ using VC++ or do you code only basic functions and try to code all database related functions using external program (PowerBuilder, Visual Basic etc...) ? I think it takes a lot of time to develop a database application using VC++ (even in MFC). When you require to code very simple code,whatever you use ODBC or ADO, it's never efficient. Do you think programmers always want to develop complex and large amount of lines of code only for pleasure ? I think most of the time it's much simpler to use 4rth generation application to build database application. What do you think ? Have you already coded a big database application ? how many time do you spent to code/test the application ? What development tools do you often use to develop such applications ? Thanks for your answers. Re: Database Applications 15-Apr-01 4:42 15-Apr-01 4:42  Don't waste your time on VC++ unless you need features such as multithreading or unique UI requirements. Write all your code in VB or something like that. The overhead it saves you is enormous. Why bother with low level COM, BSTRs, etc. When VB wrapps everything for you in a neat way ? I've been writing Database applications both in in VC++ and in VB. Most of the time I would rather use VB both for data layer and higher layers. Hope this helps. Accelerators 14-Apr-01 13:56 14-Apr-01 13:56  How do I bind an accelerator to my program? I have a Menu item called ID_EXIT and with a caption of E&xit\tCtrl+X and I have an acclerator that has the identifier ID_EXIT that is set to use Ctrl and X. It's not working. and I'm not sure why it isn't or how to get it to work. Any help with this will be appreciated. NT Service HELL With registry access Fred14-Apr-01 4:53 Fred 14-Apr-01 4:53  Hi Everyone, i reached the end of my rope. i'm trying to read the local registry, so i can retrieve a value from it, in HKEY_CURRENT_USER. All the Registry samples on CP work in the NT service BUT only with HKEY_LOCAL_MACHINE. why can i not read from HKEY_CURRENT_USER from an NT Service ?, what am i doing wrong Thanks Peter Re: NT Service HELL With registry access Anders Molin14-Apr-01 5:30 Anders Molin 14-Apr-01 5:30  Well, as standard a service log on as "system", and because of that there is no "current user" so it cannot read in HKEY_CURRENT_USER. You have to change the service so it logs on as a user, then I think it should work. - Anders clistctrl orcun colak14-Apr-01 3:56 orcun colak 14-Apr-01 3:56  I have a problem. When I want to copy an item in a list ctrl with check boxes i can not copy the item as "checked". What I am doing is I am getting all the item's properties wih getitem and then inserting it with setitem using lvi structure. the new item has a check box but it is not checked ? any ideas? thanks orcun Re: clistctrl Michael Dunn14-Apr-01 7:22 Michael Dunn 14-Apr-01 7:22  The checkbox state is kept separately. Use ListView_GetCheckState() and ListView_SetCheckState() --Mike-- http://home.inreach.com/mdunn/ The Signature, back by popular demand: Buffy. Pajamas. mystery in DirectShow 13-Apr-01 22:50 13-Apr-01 22:50  Hi everyone, I don't know how to use two filtergraphs simultaneously in my application. When I build two identical filtergraphs to capture two video sources simultaneously, it works fine when the two filtergraphs run at the same time. But at the time when I stop them, the application cracks. Each of the filtergraphs can run and stop properly if the other is stopped. Does anyone have the same experience as mine? Please help me solve this puzzle thanks. pdutcal AsserValid and Dump ... Hadi Rezaee13-Apr-01 22:44 Hadi Rezaee 13-Apr-01 22:44  <<< In the name of GOD >>> Hi. I want to know, why we use AssertValid and Dump in SDI and MDI mode ? Does thease won't work by RELEASE compile mode ? (In MSDN) Hadi Rezaie Re: AsserValid and Dump ... Andrew Peace15-Apr-01 7:06 Andrew Peace 15-Apr-01 7:06  The Dump and AssertValid (as well as TRACE and ASSERT) are used in Debug versions of your app so that you can track down bugs while you're programming the application. They are used to catch logic errors etc, NOT runtime errors such as not being able to write to a file because its locked or something. Hope that helps, Andrew. Re: AsserValid and Dump ... Hadi Rezaee15-Apr-01 9:24 Hadi Rezaee 15-Apr-01 9:24  Thanks alot for your help. Hadi Rezaie Word like autocomplete Shrini13-Apr-01 8:55 Shrini 13-Apr-01 8:55  Hi, I'm trying to make Word (winword/MS word) like auto-complete of keywords while editing in rich edit control. Eg: When you type "Janu" in microsoft Word, a small yellow pop up (like tool tip)comes above "Janu", containing text "January" and now if I press enter or tab key the text Janu is auto-completed to January. Any pointers on how to implement this in my CRichEditView will be highly appreciated. Shrini Help me to open browse dialog box. Ghasrfakhri12-Apr-01 22:36 Ghasrfakhri 12-Apr-01 22:36  I have not any think to say. please help me. Thanks a lot. Re: Help me to open browse dialog box. Ammar13-Apr-01 3:44 Ammar 13-Apr-01 3:44  Call CFileDialog() with TRUE (open dialog box) or FALSE (save dialog box) Ammar Help me to open browse dialog box. Ghasrfakhri12-Apr-01 22:35 Ghasrfakhri 12-Apr-01 22:35  I have not any think to say. please help me. Thanks a lot. Automatic year in Date Problem :( Ammar12-Apr-01 19:31 Ammar 12-Apr-01 19:31  I want to enter Month and Date only in date field. No year. But Access 2000 puts year in the field by itself. I read an article on MS site that this is a default functionality in Access2000. There should be an option to check this functionality off. I am using VC++. I get records from Access and put them in a grid. Since the Datagrid 6.0 control is bound to the db, it displays the year too. I am sorting data on date, so I cant change the field to "Text" type. I dont want the year to be there. How do I save month and date only in mdb file? HELLLLPPP!!! Ammar Re: Automatic year in Date Problem :( l a u r e n13-Apr-01 23:03 l a u r e n 13-Apr-01 23:03  you must remember that access (and most db's i know of) store date / times in a kind of julian format (ie, the number of days since 1st jan 1900, for example, and the number of milliseconds since midnight) now saying "i dont want to store the year part of a date" is like saying you don't want to buy bananas with their skins on, ie, not in this world am not sure about data-bound grids (never use them cos you get all the hassles u are dealing with) but if you were to use unbound mode for the grid you could split the dates yourself and display only the day and month part of the date hmmm ... isnt there a PreDisplayData() type function you could trap into and do the same in bound mode? --- "every year we invent better idiot proof systems and every year they invent better idiots" Re: Automatic year in Date Problem :( Anders Molin14-Apr-01 12:56 Anders Molin 14-Apr-01 12:56  Make your own grid... Do not sound nice, but you can't get rid of the year in a date/time field in access... - Anders dev c++ James McCarty12-Apr-01 16:31 James McCarty 12-Apr-01 16:31  anyone out there use this compiler? i find myself opening it 10times more than vc++. the win32 library is amazing. the irc tech support is the best. there is ALWAYS a bloodshed guy there to help people. really the only reason i ever open vc++ is for my interfaces and bmaps Bill Gates is Linus Torvalds' bitch Windows bows down to Linux by 2010 Win98.....Win NT?????? Richard Cheng12-Apr-01 11:39 Richard Cheng 12-Apr-01 11:39  I'm writing program under WinNT environment recently and wants to make it workable in Win95/98. This program has to talk to the Touchscreen driver. This driver has different interface file for 85/98 and NT, but they do share some *.h files (share the main .h file.......for example, i have to access function ABC(). Both W95/98 and NT's interface file have this function (same name) and share the same .h file (ABC.h). So, I just only have to include ABC.h in my program and use this function. If i want to work in 95/98, i just have to put the w95/98 file in my project....same as WinNT. However, can i put everything in the project and let the program to decide whether using w95/98 or NT. I don't want to have two separate programs in W95/98 and NT....... Thanks Re: Win98.....Win NT?????? l a u r e n13-Apr-01 23:06 l a u r e n 13-Apr-01 23:06  its called conditional compilation or you could detect the os at runtime and switch between diff code blocks but then your code is bigger --- "every year we invent better idiot proof systems and every year they invent better idiots" Win98.....Win NT?????? Richard Cheng12-Apr-01 11:21 Richard Cheng 12-Apr-01 11:21  I'm writing program under WinNT environment recently and wants to make it workable in Win95/98. This program has to talk to the Touchscreen driver. This driver has different interface file for 85/98 and NT, but they do share some *.h files (share the main .h file.......for example, i have to access function ABC(). Both W95/98 and NT's interface file have this function (same name) and share the same .h file (ABC.h). So, I just only have to include ABC.h in my program and use this function. If i want to work in 95/98, i just have to put the w95/98 file in my project....same as WinNT. However, can i put everything in the project and let the program to decide whether using w95/98 or NT. I don't want to have two separate programs in W95/98 and NT....... Thanks ADO with VC 12-Apr-01 10:51 12-Apr-01 10:51  Are there any books about ADO with VC? I've only been able to find VB ones... WH_SHELL Hook Mustafa Demirhan12-Apr-01 9:46 Mustafa Demirhan 12-Apr-01 9:46  Hi, My question is about WH_SHELL hook. When I hook WH_SHELL, the tray does not work correctly when my program is active. For example, when I open a program (when my program is active) its icon does not appear in the tray. Note that in the hook function, I do nothing. I just call next hook. Moreover, the problem arises only on Win9x/Me. Not on W2k. Is there anybody who knows the reason for this stupid behavior? Mustafa Demirhan STL compiling problems in New and Memory : syntax error : identifier 'THIS_FILE' 12-Apr-01 8:21 12-Apr-01 8:21  Hi I've tried to use STL in an MFC project. The subject describes the problem rather well. The strange about this is that THIS_FILE doesn't exists in the lines where the compiler complains. I checked what THIS_FILE is, and became even more confused. Why would STL use an identifier used by the MFC macros ASSERT and VERIFY? Anyone who has solved this? the compiler output: c:\program\microsoft visual studio\vc98\include\new(35) : error C2061: syntax error : identifier 'THIS_FILE' c:\program\microsoft visual studio\vc98\include\new(35) : error C2091: function returns function c:\program\microsoft visual studio\vc98\include\new(35) : error C2809: 'operator new' has no formal parameters c:\program\microsoft visual studio\vc98\include\new(36) : error C2061: syntax error : identifier 'THIS_FILE' c:\program\microsoft visual studio\vc98\include\new(37) : error C2091: function returns function c:\program\microsoft visual studio\vc98\include\new(37) : error C2556: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,const struct std::nothrow_t &)' : overloaded function differs only by return type from 'void *(__cdecl *__cdecl operator new(void))(unsigned int)' c:\program\microsoft visual studio\vc98\include\new(35) : see declaration of 'new' c:\program\microsoft visual studio\vc98\include\memory(16) : error C2061: syntax error : identifier 'THIS_FILE' c:\program\microsoft visual studio\vc98\include\memory(17) : error C2091: function returns function c:\program\microsoft visual studio\vc98\include\memory(17) : error C2784: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,class std::allocator<`template-parameter257'> &)' : could not deduce template argument for 'void *(__cdecl *)(unsigne d int,class std::allocator<_Ty> &)' from 'void *(__cdecl *)(unsigned int)' c:\program\microsoft visual studio\vc98\include\memory(17) : error C2785: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,class std::allocator<`template-parameter257'> &)' and 'void *(__cdecl *__cdecl operator new(void))(unsigned int)' hav e different return types c:\program\microsoft visual studio\vc98\include\memory(16) : see declaration of 'new' c:\program\microsoft visual studio\vc98\include\memory(17) : error C2809: 'operator new' has no formal parameters c:\program\microsoft visual studio\vc98\include\memory(20) : error C2954: template definitions cannot nest

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