problem with m_strCursor - C / C++ / MFC Discussion Boards

Re: OnFind()

toxcct26-Mar-06 3:31

toxcct

26-Mar-06 3:31

well, what you want seems to be some SQL queries...

Runtime Compression

Waldermort24-Mar-06 21:19

Waldermort

24-Mar-06 21:19

I would like to distribute a font file with my app. The font I have is a little too large for my liking, 3.6mb. Using winrar I am able to compress it down to 1.2mb which is a little more realistic.

Obviously There is a chance that winrar will not be installed on the target machine so I need some sort of runtime decrompression algorithm. The idea is, I compress the file and add it to the resources/installer then simply deflate it onto the target machine.

I know of zlib, but I have never used it. Could anybody recomend a good algorithm, with not much overhead, will not increae the exe size too much, and fairly easy to implement? This is not an MFC project Smile | :)

Re: Runtime Compression

Saurabh.Garg25-Mar-06 0:48

Saurabh.Garg

25-Mar-06 0:48

you can try one of these...

http://www.codeproject.com/useritems/LiteZip.asp[^]

http://www.codeproject.com/cpp/xzipunzip.asp[^]

http://www.wischik.com/lu/programmer/index.html[^]

-Saurabh

Re: Runtime Compression

Waldermort25-Mar-06 1:28

Waldermort

25-Mar-06 1:28

This for the links, I will into them Smile | :)

Re: Runtime Compression

Hamid_RT25-Mar-06 1:34

Hamid_RT

25-Mar-06 1:34

maybe it is some helpful to you

http://www.codeguru.com/Cpp/Cpp/algorithms/compression/article.php/c5137[^]

Flat DateTimePicker Class

mikobi24-Mar-06 20:31

mikobi

24-Mar-06 20:31

I am using Visual c++ 6.0.

Where can I found a class that make DateTimePicker Flat like i found for ComboBox

Urgent

I learn my self

Re: Flat DateTimePicker Class

mikobi25-Mar-06 3:16

mikobi

25-Mar-06 3:16

No Body can reply me at this forum !

problem with m_strCursor

Kranti125198424-Mar-06 20:21

Kranti1251984

24-Mar-06 20:21

Hi,

I've an application which creates HTML files. For that i'm using some database operations, which includes classes such as, CDatabase and CRecordSet etc.

I'm getting an exception as "invalid cursor" since m_strCursor is getting set to some file name e.g. "test.html", which the application is creating. I'm not able to trace out, how the variable is getting set. Similarly, m_strFilter, m_strSort, m_strUpdateSQL, m_strRequeryFilter, m_strRequerySort are getting set to the same file name.

Thanks,
Kranti

VS2005 - ellipsis in a macro

Chintoo72324-Mar-06 18:42

Chintoo723

24-Mar-06 18:42

VS6 and VS2003 do not support varargs in a C macro. The link http://sourceforge.net/mailarchive/forum.php?forum_id=40270&max_rows=25&style=nested&viewmonth=200503[^] hints that this is possible in VS2005.

I dont have VS2005 installed, can someone who has VS2005 quickly check if the following compiles?

#define myprint(fmt, args_...) _snprintf(str, fmt, ##args_)<br />
char str[64];<br />
myprintf("hello %s", "world");

thanks!

Re: VS2005 - ellipsis in a macro

Michael Dunn25-Mar-06 0:23

Michael Dunn

25-Mar-06 0:23

VC8 does support it, you've got the syntax wrong though. It should be

#define foo(fmt,...) _snprintf(str,fmt,<font color=red>__VA_ARGS__</font>)

More info[^]

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | NEW!! PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Re: VS2005 - ellipsis in a macro

Chintoo72325-Mar-06 22:50

Chintoo723

25-Mar-06 22:50

Cool, that is what I was looking for. Thanks.

Now one more thing - is there any preprocessor variable that indicates what compiler is compiling the code? I want to write this macro seperately once for VC8 and once for VC6/VC7 so that the code can still be compiled with the older compiler, just in case someone wants to use the older compilers.

thanks!

Re: VS2005 - ellipsis in a macro

Michael Dunn26-Mar-06 12:22

Michael Dunn

26-Mar-06 12:22

Chintoo723 wrote:
is there any preprocessor variable that indicates what compiler is compiling the code?

Yep, look up _MSC_VER in the help

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | NEW!! PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Lan Connection

vivek.s.vivek24-Mar-06 17:55

vivek.s.vivek

24-Mar-06 17:55

Guys,

* How to find my system get connected to LAN alone
not internet.

* IsNetworkAlive() API results in compilation error. AS
It requires Sensapi.h and its not found in my sysem.
where could I get this file?.

You only have to do a very few things right in your life so long as you don't do too many things wrong.
Vivek.S

Re: Lan Connection

ThatsAlok24-Mar-06 18:52

ThatsAlok

24-Mar-06 18:52

vivek.s.vivek wrote:
It requires Sensapi.h and its not found in my sysem. where could I get this file?.

Download latest PSDK from MSDN site or seach cds comes with MSDN subscriptions.

Re: Lan Connection

Ganesh_T24-Mar-06 23:03

Ganesh_T

24-Mar-06 23:03

Try using this.

DWORD flags;

BOOL chk=InternetGetConnectedState(&flags, NULL);
if(chk)
AfxMessageBox("Connected");
else
AfxMessageBox("Not Connected");

Cheers
"Peace of mind through Technology"

Re: Lan Connection

ThatsAlok25-Mar-06 5:59

ThatsAlok

25-Mar-06 5:59

Ganesh_T wrote:
BOOL chk=InternetGetConnectedState(&flags, NULL);

This function doesnot gurrantee internet state

How do I magnify a section fo the screen?

Rapture2k424-Mar-06 15:50

Rapture2k4

24-Mar-06 15:50

Greetings,

I'm new to VC++ and the MFC (been programming text based games in C for 10 years) and I've decided to give VC++ a shot. I have worked with some DirectX 8 and 9 over the last few months (modifying what someone else wrote and using MSDN to understand it all). Anyways, what I'm trying to do is create an application that will do a couple things:

1.) Copy the pixel/bitmap information of the center of the screen (let's say 50x50 pixels)
2.) Draw a black box in the center of the screen (multiple of the above [1.5-4x])
3.) Scale the stored pixel/bitmap information to match the size of the box.
4.) Draw the new bitmap in the box.

Also, I'm wondering if it is possible to make this an overlay to some fullscreen application (for example a 3D game). The purpose of this application is to offer a "zoom" function in Blizzard's World of Warcraft MMORPG game. I have managed to hook DirectX and then modifying the Field of View (which works wonderfully), but I have come across a problem. Due to the nature of my code (hooking Dx9), the game thinks I'm using some type of cheat. Blizzard froze my account and after explaining what I was doing (and sending them my code), they unbanned me and told me I'd have to come up with a different method that did not involve attaching to WoW's process. The person I spoke with said that my little project was such a good idea that he'd pass it on to the dev-team. This is all fine and good, but I am now very curious as to how I can go about this independently of the game. Besides, I'm sure the dev-team won't have this feature in the game for quite some time (if they even consider it needed).

I figure the best approach would be using GDI/GDI+ for this, unless it is possible to do in DirectX or OpenGL without hooking WoW's process. I just have no idea where to start looking for information. Most of my searching has turned up articles on the inefficiency of GetPixel() and how using other GDI functions is much more efficient. Or I come across some pre-built application with no source code to learn from OMG | :OMG:

. On another note, I'm wondering if my overlay will "flicker" due to the fact the game is rendering constantly (90-100 frames per second) and my application will just render as fast as it can loop (without hording the CPU). I know that some applications can place overlays on games without a problem (such as xFire) and I wonder how.

Any ideas, snippets, or places of intrest to look?

Thanx so much,
Rapture2k4

Re: How do I magnify a section fo the screen?

includeh1025-Mar-06 0:10

includeh10

25-Mar-06 0:10

I am new to DirectX, and very cofused by your question.
As I know, capturing screen is very easy in DirectX, then StrechBlt() the image captured to larger area - this is all you need to do.

I hope I understand your question correctly.

by the way, do you know how to capture screen faster in DirectX? - I mean, by what functions or packge (DirectShow, DirectDraw etc.)? My current program is about capture screen, I need to capture full screen in 50 ms, but I can not do it, I can not capture so fast.

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Includeh10

Re: How do I magnify a section fo the screen?

Rapture2k425-Mar-06 0:43

Rapture2k4

25-Mar-06 0:43

Well, I dunno which method you use, but I found this one (I haven't tested it yet):

http://www.codeproject.com/dialog/screencap.asp#And%20The%20DirectX%20way%20of%20doing%20it%20:

I'm sure it is faster then 50ms.

Re: How do I magnify a section fo the screen?

includeh1025-Mar-06 1:26

includeh10

25-Mar-06 1:26

I had downloaded all software before here, but none of them was faster than 50 ms.
I will test the one you suggested - I can not remember if I downloaded it before.

cheers.

A nice hyper tool for optimizing your Microsoft html-help contents.
A best image tool for Windows C++ programmers, don't miss it!.

Includeh10

i want to develop a GUI

ashalab24-Mar-06 15:06

ashalab

24-Mar-06 15:06

i need to develop a GUI to mimic a water level measurent application as well as reading of lpt port

Re: i want to develop a GUI

Aqueel24-Mar-06 17:52

Aqueel

24-Mar-06 17:52