C / C++ / MFC Discussion Boards

Anthony Appleyard19-Dec-07 4:36

19-Dec-07 4:36

With thanks to earlier help, I now know how to read and write JPG and GIF and some other graphics files; there is an example on http://msdn2.microsoft.com/en-us/library/ms533844.aspx .

But, behind the class function calls Image:Image(WCHAR* filename) and Image:Save(WCHAR*filename,...), please what are the names of the basic bottom-level Windows functions that read and write graphics files without going though classes?

Re: reading and writing JPG and GIF

CPallini19-Dec-07 5:17

CPallini

19-Dec-07 5:17

There isn't Win32 API to do that stuff.
You have to use either GDI+ (hence classes) or third party (free?) libraries.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Running with 8-byte characters

Anthony Appleyard19-Dec-07 4:21

Anthony Appleyard

19-Dec-07 4:21

Does Visual C++ 2008 (either the free download or the paid-for version) have an option to run in the old form with the Windows functions expecting old-type 8-bit character arrays?

For example, I get the impression that the old MessageBox() function with char* arguments, may still exist, but that there is also a new library routine MessageBoxW() with WCHAR* arguments, and then #define MessageBox MessageBoxW somewhere in the library blocks access to the old MessageBox() function; and similarly with many other Windows functions.

I know that this is to handle 16-bit Unicode characters; but my current program is a graphics program, and I am not interested in handling Devanagari or Arabic or Chinese etc characters and I am content with the old ascii set; and going through a biggish program adapting for so many Windows function calls being masked by new forms which need WCHAR* instead of char* arguments, is getting to be a total nightmare, and the more I have to change, the more risk is of mistakes getting in.

Re: Running with 8-byte characters

JudyL_MD19-Dec-07 5:03

JudyL_MD

19-Dec-07 5:03

In VS2005 and up, projects default to Unicode. Change the project setting for Character Set to Not Set (this is what they're called in 2005) and you'll be back to ANSI.

Judy

Re: Running with 8-byte characters

Anthony Appleyard19-Dec-07 5:10

Anthony Appleyard

19-Dec-07 5:10

Thanks. In Visual C++ 2008 mouse the menu Project -> (prog_name) Property Pages -> Configuration Properties -> General, and Character Set is 3rd from the bottom in the list of properties inside the box.

Re: Running with 8-byte characters

CPallini19-Dec-07 5:11

CPallini

19-Dec-07 5:11

Anthony Appleyard wrote:
Does Visual C++ 2008 (either the free download or the paid-for version) have an option to run in the old form with the Windows functions expecting old-type 8-bit character arrays?

By default Visual Studio 2008 generates UNICODE builds, but you can disable it:
Select Project Properties menu item then (in the appeared window), select Configuration Properties->General node and change the Character Set option.

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Running with 8-byte characters

cmk19-Dec-07 13:14

cmk

19-Dec-07 13:14

Your impression is right.

All the 'old' functions have an A at the end (ANSI char).
All the 'new' functions have a W at the end (wide char).
e.g. MessageBoxA() (defined in winuser.h)

...cmk

The idea that I can be presented with a problem, set out to logically solve it with the tools at hand, and wind up with a program that could not be legally used because someone else followed the same logical steps some years ago and filed for a patent on it is horrifying.
- John Carmack

Remote Debugging

Rage19-Dec-07 4:10

Rage

19-Dec-07 4:10

I would like to remote debug a dll that I made as a plig-in of a 3rd party application. I have set up the VS2005 debugger so that I can see processes from the remote computer, but I only see .exe, and not my dll. And choosing the exe that uses my dll does not help.

Any idea ?

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Do not feed the troll ! - Common proverb

SDI Windows Style

CrocodileBuck19-Dec-07 3:40

CrocodileBuck

19-Dec-07 3:40

Hallo

,

i want to code an SDI-ExplorerStyle application.
Are there tuts, code snippets or samples on how to fill the tree (as in the orig. Explorer) and how to show the Datas in the ListView out there Confused | :confused:

?
I really searched for it, but the only things i found are treectrls on dlgs Frown | :(

!!!

Many, many thx for your Help Wink | ;)

best regards
Croc

Re: SDI Windows Style

led mike19-Dec-07 4:01

led mike

19-Dec-07 4:01

CrocodileBuck wrote:
samples on how to fill the tree

CrocodileBuck wrote:
but the only things i found are treectrls on dlgs

For filling the tree control it doesn't matter how it is hosted in the application because a tree control is a tree control, period. The same is true for ListViews and yes I don't remember there being a shortage of ListView and TreeView samples and articles on the internet. Mainly here on CodeProject and on MSDN.

Re: SDI Windows Style

CrocodileBuck19-Dec-07 4:11

CrocodileBuck

19-Dec-07 4:11

Thx Led Mike for qour quick answer Wink | ;)

!

No Tuts or samples ;(( !
I will try it anyway Wink | ;)

Best regards
Wink | ;)

Croc

Re: SDI Windows Style

led mike19-Dec-07 5:48

led mike

19-Dec-07 5:48

CrocodileBuck wrote:
No Tuts or samples

What? There are loads of them both here in CodeProject Articles and on MSDN.

For the articles on CodeProject in the left column under "Chapters" click "Desktop Development". In that list you will see both List Controls and Tree Controls.

Re: SDI Windows Style

Mark Salsbery19-Dec-07 6:41

Mark Salsbery

19-Dec-07 6:41

FWIW - when the new MFC classes are released in the next month or two,
there's new controls for both the tree and the list in the shell (Windows)
explorer.

You can roll your own, of course Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: SDI Windows Style

led mike19-Dec-07 7:16

led mike

19-Dec-07 7:16

What are you doing in my thread! Laugh | :laugh:

Merry Christmas Mark

Re: SDI Windows Style

Mark Salsbery19-Dec-07 7:21

Mark Salsbery

19-Dec-07 7:21

led mike wrote:
What are you doing in my thread!

I stopped by to send my best wishes to you for a great holiday!

Poke tongue | ;-P

Merry Christmas!

Beer | [beer]

( or :eggnog: )

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Hotkey for menu Item

paresh_joe19-Dec-07 3:19

paresh_joe

19-Dec-07 3:19

How to insert a hotkey (Eg. Ctrl+U)in a menu item (through code) in vc++.

Re: Hotkey for menu Item [modified]

DoomedOne19-Dec-07 4:40

DoomedOne

19-Dec-07 4:40

Hi, hope this link helps for a start

http://msdn2.microsoft.com/en-us/library/ms646337(VS.85).aspx[^]

And here is a link to a thread whit a smal example on this

http://cboard.cprogramming.com/showthread.php?t=20926[^]

Habetis bona deum

modified on Wednesday, December 19, 2007 11:11:41 AM

Regarding Memory leak

adiveppanavar19-Dec-07 0:55

adiveppanavar

19-Dec-07 0:55

hi i am doing reading frame by frame using avcodec, posting the data for rendering. i am getting the video properly but i am getting memory leak in bitmapinfo
i am using bitmaps for drawing the image.
please help me to how to over come that.
thanks

Re: Regarding Memory leak

CPallini19-Dec-07 1:01

CPallini

19-Dec-07 1:01

adiveppanavar wrote:
memory leak in bitmapinfo

How do you use it (i.e. post the relevant code.)?

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Regarding Memory leak

Hamid_RT19-Dec-07 1:25

Hamid_RT

19-Dec-07 1:25

Is it possible we see your code?how did you try?

Re: Regarding Memory leak

Don Box19-Dec-07 1:44

Don Box

19-Dec-07 1:44

Hi adiveppanavar!
I'm also dealing with avcodec to convert a video file to the other format. COuld u help me out plz?

U'r help would be highly appreciated.

thanx

Come online at:-
jubinc@skype

Re: Regarding Memory leak

David Crow19-Dec-07 2:35

David Crow

19-Dec-07 2:35

adiveppanavar wrote:
i am getting memory leak in bitmapinfo

How are you verifying this?

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Connect to MySQL from MFC Dlg

QuickDeveloper18-Dec-07 23:58

QuickDeveloper

18-Dec-07 23:58

hi
I want to connect to MySQL database when i click a button in MFC dialog based application.

1)I searched web (including CP) but i didn't find exact info since there seems to be various methods to connect including DSN less (using MySQL++)

2)I have downloaded MySQL database & ODBC connector but i am not able to connect to it even while creating DSN(From Control Panel).

3)I am able to create tables etc on MySQL command line but not able to establish link between database & VC++ App.

Can anyone point me to a simple article which explains connecting to MySQl and inserting a record into it(with DSN or without DSN)

thanx in advance

"Every morning I go through Forbes list of 40 richest people in the world. If my name is not in there, I go to work..!!!"

Re: Connect to MySQL from MFC Dlg

Kiran Pinjala19-Dec-07 0:27

Kiran Pinjala

19-Dec-07 0:27

MySql installation will provide you with soem documentation for api's to be used for all operations with MySql Database.
Some of them are

void *mydata;
//initialize and connect to mysql database
mysql_init((MYSQL*) 0);
mysql_real_connect((MYSQL*) myData,dbHost,dbUID,dbPWD, NULL, MYSQL_PORT, NULL,0);
//select the database to futher operations
mysql_select_db( (MYSQL*)myData,"MYSQL");
// run aquery
mysql_query((MYSQL*)myData, "select * from mysql.host");

Saadhinchaali

Re: Connect to MySQL from MFC Dlg

Kiran Pinjala19-Dec-07 0:43

Kiran Pinjala

19-Dec-07 0:43

See here

Saadhinchaali

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