|
hello
how can i biuld an application for fetching row from a large database (1000's rows) a constant number of rows (25 or 50) and put those rows into a listview and when the scroll is down fetch next group of rows
it is posible to use an sql cursor (i use a sql server for database)?
please post some tutorial for this
i think is usefull for most people
i know that the ADO can do this but i don't want to use an active x control
thank you very much
|
|
|
|
|
I'd love to see a code sample of how to play multiple musical notes at once from memory instead of a file.
Thanks.
|
|
|
|
|
How can I derive (superclass) my own class of windows from standard BUTTON class, for example, and change its look (for example: buttons and other controls in Microsoft Money).
|
|
|
|
|
Derive your class from CButton. Then you have to guarantee that your button is always created using BS_OWNERDRAW style (if button is created explicitely using Create() function you might override PreCreateWindow() in order to do that, otherwise when button is being subclassed, e.g. in DDX/DDV engine, you have to override PreSubclassWindow() and put there an assert that checks for BS_OWNERDRAW style).
As long as BS_OWNERDRAW style is set Windows will send your button WM_DRAWITEM message in which you have to draw the button. MFC provides virtual DrawItem() function that you need to override in order to handle WM_DRAWITEM message.
From this point you are on your own in terms of providing drawinf implementation and handling the mouse and keyboard input in any specific way (of course, if you need to).
Above mentioned details of implementation are valid only if you use MFC in your development. Using straight SDK you would need to take basically the same steps. But of course you need to handle all corresponding messages (WM_CREATE, WM_DRAWITEM) explicitly in your window procedure.
Regards
Andrei Zenkovitch
Dundas Software
==================
The original message was:
How can I derive (superclass) my own class of windows from standard BUTTON class, for example, and change its look (for example: buttons and other controls in Microsoft Money).
|
|
|
|
|
Hi,
I am working with mpegs quiet a lot and need new
mpeg decoding source code (preferably in C++)
Do you have any or do you know where to find it?
tnx,
Kai.
|
|
|
|
|
Does anybody know what to do to use the new Open File Dialog
that is now standard on Windows 2000 ? My app works fin on
W2000 but the Open File Dialog looks exactly the same way as
under Windows 95/98/NT.
Thanks
|
|
|
|
|
You probably need to get the latest version of the shell DLL's for each OS. which may or maynot be available in a Service pack.
==================
The original message was:
Does anybody know what to do to use the new Open File Dialog
that is now standard on Windows 2000 ? My app works fin on
W2000 but the Open File Dialog looks exactly the same way as
under Windows 95/98/NT.
Thanks
|
|
|
|
|
In any case, it might be safer to use the old dialog box, unless you are planning to make your program only W2000 compatible. The other option is to use an OS check and open a different box for each setting...however, this might complicate things depending on how the API for the new boxes works. It may auto-detect for you, but you never know. Best thing is to get the docs from MS and then implement it.
==================
The original message was:
Does anybody know what to do to use the new Open File Dialog
that is now standard on Windows 2000 ? My app works fin on
W2000 but the Open File Dialog looks exactly the same way as
under Windows 95/98/NT.
Thanks
|
|
|
|
|
New Open File dialog is available only on Windows 2000 and in order to use it you have to use new version of OPENFILENAME structure that is defined in platform SDK 2000 as following:
typedef struct tagOFN {
DWORD lStructSize;
HWND hwndOwner;
HINSTANCE hInstance;
LPCTSTR lpstrFilter;
LPTSTR lpstrCustomFilter;
DWORD nMaxCustFilter;
DWORD nFilterIndex;
LPTSTR lpstrFile;
DWORD nMaxFile;
LPTSTR lpstrFileTitle;
DWORD nMaxFileTitle;
LPCTSTR lpstrInitialDir;
LPCTSTR lpstrTitle;
DWORD Flags;
WORD nFileOffset;
WORD nFileExtension;
LPCTSTR lpstrDefExt;
DWORD lCustData;
LPOFNHOOKPROC lpfnHook;
LPCTSTR lpTemplateName;
#if (_WIN32_WINNT >= 0x0500)
struct IMoniker **rgpMonikers;
DWORD cMonikers;
DWORD FlagsEx;
#endif // (_WIN32_WINNT >= 0x0500)
} OPENFILENAME;
The new element of this structure that you will be primarily interested in is FlagsEx. It can be set to the following value:
<<<<
OFN_EX_NOPLACESBAR
If this flag is set, the places bar is not displayed. If this flag is not set, Explorer-style dialog boxes include a places bar containing icons for commonly-used folders, such as Favorites and Desktop.
>>>>
Regards
Andrei Zenkovitch
Dundas Software
==================
The original message was:
Does anybody know what to do to use the new Open File Dialog
that is now standard on Windows 2000 ? My app works fin on
W2000 but the Open File Dialog looks exactly the same way as
under Windows 95/98/NT.
Thanks
|
|
|
|
|
Have a look at www.microsoft.com/msj
The "Microsoft Systems Journal" dated Aug 1999. Aticle "The logo and beyond..."
Regards
Jerry
==================
The original message was:
Does anybody know what to do to use the new Open File Dialog
that is now standard on Windows 2000 ? My app works fin on
W2000 but the Open File Dialog looks exactly the same way as
under Windows 95/98/NT.
Thanks
|
|
|
|
|
Hi Michael,
have a look at http://www.codeproject.com/dialog/win2000fd.asp
Best regards,
Thomas
|
|
|
|
|
I desperately want a class that does a couple of specific things. It's a personal thang - I'm writing an app that will be freeware, but it's such a challenge that I'm almost willing to pay for the help! I'm tired of hunting for info, and hackiong for results. I can't get my head round the bitmap structires enough to write my own functions - hence a public request for a class.
I want it to:
~ be derived from CDC so that I can draw & blit to it, etc
~ be able to load from and save to 8,16,24 and 32bit DIBs
~ flip (mirror vertically)
Any takers?? If so, I have an existing CDIB class that does nearly all of the above and will send it to anyone who wants it.
Thank you in advance
|
|
|
|
|
The easiest thing to do would be to modify your CDIB class to use a DIBSection instead of direct memory - the only thing to change here would be the way you allocate your memory - but you probably use Global Alloc any way so that too shouldnt matter. I have a DIB class which i attach to a DibSection everytime i want to use one of the GDI functions to draw into the DIB . If you have a problem, let me know at rrajivram@hotmail.com and Ill try to send you a stripped down version which will show you the way.
Cheers,
Rajiv
|
|
|
|
|
Maybe http://www.codeproject.com/gdi/WebImageDC.asp will provide a starting point...
==================
The original message was:
I desperately want a class that does a couple of specific things. It's a personal thang - I'm writing an app that will be freeware, but it's such a challenge that I'm almost willing to pay for the help! I'm tired of hunting for info, and hackiong for results. I can't get my head round the bitmap structires enough to write my own functions - hence a public request for a class.
I want it to:
~ be derived from CDC so that I can draw & blit to it, etc
~ be able to load from and save to 8,16,24 and 32bit DIBs
~ flip (mirror vertically)
Any takers?? If so, I have an existing CDIB class that does nearly all of the above and will send it to anyone who wants it.
Thank you in advance
|
|
|
|
|
I have a RichEditCtrl that "initially" does not diplay text that is pasted into it (using my_RichEditCtrl->Paste() or by Shift-Insert,Ctrl- V). The text "is" displayed if you then obscure the window and cause a redraw.
What do I have to do to get the text to be made visible after the paste? Is it something to do with the configuration of the RE Ctrl, e.g in the Create call, or something I must do after the paste?.
Thank-you
Steve
|
|
|
|
|
==================
The original message was:
I have a RichEditCtrl that "initially" does not diplay text that is pasted into it (using my_RichEditCtrl->Paste() or by Shift-Insert,Ctrl- V). The text "is" displayed if you then obscure the window and cause a redraw.
What do I have to do to get the text to be made visible after the paste? Is it something to do with the configuration of the RE Ctrl, e.g in the Create call, or something I must do after the paste?.
Thank-you
Steve
Dear Steve,
Offhand, it sounds like you need to invalidate the area of the control after doing the paste,
so that the new text will pop into view right away. I'm not an RE expert, but there should be a
way to do an OnUpdate() or OnDraw() call for the control, which is after all a window.
I hope this helps,
Wes Rogers
|
|
|
|
|
I am looking for a way to list the files in a project open in the IDE. I cannot seem to find the right object/method. I want to operate on the files in a macro. I need to optionally see only the "selected" files. I tried recording the action of selecting some files, right clicking them and then hitting "compile" but it basically gave me an empty function. This may be part of the VCS interface that Microsoft is holding secret. 
|
|
|
|
|
I would like some generic code that opens a database lets say access, and bind it to VC. This class should not be derived from RecordSet or DaoRecoredSet.
|
|
|
|
|
The original message was:
>>I would like some generic code that opens a database >>lets say access, and bind it to VC. This class should >>not be derived from RecordSet or DaoRecoredSet.
I've been looking into ODBC recently myself and would love to see an article using the Win32 API for ODBC.
If anyone's interested in a library similar to JDBC for accessing ODBC databases, there's libodbc++ at http://www.orcane.net/freeodbc++/
Would also be interested to know if anyone has run across a library for connecting to Access without going through ODBC. I've seen one for xbase (Dbase III/Clipper) at http://www.startech.keller.tx.us/xbase/xbase.html
|
|
|
|
|
A colleague of mine and I am currently working just a thing. We are developing three C++ classes that will use the ODBC API to access database information.
The classes will be named something like:
CODBCTable
CODBCDatabase
CODBCDriver
Not exactly sure when they will be finished, depends how much time we can dedicate to the project.
|
|
|
|
|
i'm looking for a code generator
that does the following:
either software or a product that will
take a c struct definition, and generate a method with two parameters.
One parameter is an stl stream and the other is a ref to the struct.
the method would then dump the the instance of the struct into an
the stream in xml format. the element names for the xml tags
would be the corresponding name of the element in the
c struct. do you know of anything out there or a way
i can use pre-existing tools to do the job?
|
|
|
|
|
Hi
I'm very new with Visual C++ and MFC. I'm trying to write a simple expression evaluator with GUI. However, I can't find any way to write output in a way such that user can type in the next line, like cout C++. I tried to use GetWindowText, SetWindowText but the problem with SetWindowText is that the cursor will come back to point (0,0) and I can't set it to the next line of the written line. I also want this edit window can change wordwrap state dynamically like NotePad. Have anyone ever written any app like that, can you show me how to do it. Thank you very much.
Tung
|
|
|
|
|
Hi all,
I need an algorith to wildcard match two strings similar to what happens when you do a dir *.* - I`d require it to support both * and ? - nothing too fancy !!
Appreciate any help in this !!
Thanks in advance !!
Rajiv
|
|
|
|
|
Hi, this code should do the trick. It's an adapted function from SysInternals' FileMon application.
Regards,
Gertjan Schuurmans
Amsterdam
//---------------------------------------------------
// MatchWildCard
//
//Parameters
// LPCTSTR pszWildCard
// LPCTSTR pszFileName
//
//Returns
// BOOL
//
//Remarks
//
// MatchWildCard tests whether the given filename matches the wildcard. pszWildCard
// can contain * and ? special characters.
//
BOOL MatchWildCard(LPCTSTR pszWildCard, LPCTSTR pszFileName)
{
#define UpCase(ch) ((ch) >= 'a' && (ch) <= 'z' ? (ch) - 'a' + 'A' : (ch))
TCHAR chFile, chWild;
// End of pattern?
if (!*pszWildCard)
{
return FALSE;
}
// If we hit a wild card, do recursion
if (*pszWildCard == '*')
{
pszWildCard++;
while (*pszFileName && *pszWildCard)
{
chFile = UpCase(*pszFileName);
chWild = UpCase(*pszWildCard);
// See if this substring matches
if (chWild == chFile || chFile == '*')
{
if (MatchWildCard(pszWildCard + 1, pszFileName + 1))
{
return TRUE;
}
}
// Try the next substring
pszFileName++;
}
// See if match condition was met
return (*pszWildCard == 0 || *pszWildCard == '*');
}
// Do straight compare until we hit a wild card
while (*pszFileName && *pszWildCard != '*')
{
chFile = UpCase(*pszFileName);
chWild = UpCase(*pszWildCard);
if (chWild == chFile || chWild == '?')
{
pszWildCard++;
pszFileName++;
} else
{
return FALSE;
}
}
// If not done, recurse
if (*pszFileName)
{
return MatchWildCard(pszWildCard, pszFileName);
}
// Make sure its a match
return (*WildCard == 0 || *WildCard == '*');
==================
The original message was:
Hi all,
I need an algorith to wildcard match two strings similar to what happens when you do a dir *.* - I`d require it to support both * and ? - nothing too fancy !!
Appreciate any help in this !!
Thanks in advance !!
Rajiv
|
|
|
|
|
Can anybody can integrate CVS version control with the Visual Devstudio IDE? My company is migrating there right now(BIG mistake), so I am trying to find a civilized way to work with it instead of the command line or WinCVS things...
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
