How to convert a pointer to char*? - C / C++ / MFC Discussion Boards

ZoogieZork29-Sep-03 6:32

29-Sep-03 6:32

It's possible to draw single pixels in DirectDraw or Direct3D, but the methods are a bit cumbersome and are generally pretty inefficient. Modern graphics hardware exploits parallelism between the GPU and the CPU, and sending commands to draw pixels one by one carries a lot of overhead.

That said, here is an article on drawing single pixels in DirectDraw:
http://www.gamedev.net/reference/articles/article538.asp[^]

- Mike

Re: DirectX pixel drawing

skaanji29-Sep-03 8:16

skaanji

29-Sep-03 8:16

Thanks for this link.
You're right it seems to be time waste to do that,
i think i better use bitmaps to realize my ideas Smile | :)

Debug Window.

⁷³Zeppelin29-Sep-03 3:12

⁷³Zeppelin

29-Sep-03 3:12

I've noticed that the VS 6.0 Debug window will only
display so many lines before giving up and/or reaching
some maximum number of lines of Debugging output.
Have been working on a large project and am getting sick
of trying to shift around all the TRACE calls so that I
can see all that I need to.
I am assuming that this is either a deficiency of the IDE
or that somewhere there is a limit as to how many lines
the Debug window will display - if this is the case, where
do I increase that? If not, is there a fix available??

Is it possible to redirect output from this window, to, say
a log file??

TIA.

John Theal
Physicist/Mathematical Programmer
Digital Immersion Software Corporation

Got CAD?
http://www.presenter3d.com[^]
http://www.merlin3d.com[^]

Re: Debug Window.

Adam Gritt29-Sep-03 3:38

Adam Gritt

29-Sep-03 3:38

Goto www.dilascia.com and look at his TraceWin project. It is a good alternative to dumping to the debug window and supports logfiles.

Re: Debug Window.

⁷³Zeppelin29-Sep-03 4:07

⁷³Zeppelin

29-Sep-03 4:07

Using it now. It's great - neatest thing since sliced bread.
Thanks.

John Theal
Physicist/Mathematical Programmer
Digital Immersion Software Corporation

Got CAD?
http://www.presenter3d.com[^]
http://www.merlin3d.com[^]

Get click event from a DialogBar

Sebastien Bouchard29-Sep-03 2:45

Sebastien Bouchard

29-Sep-03 2:45

Hi,

I have a Dialogbar created from the OnCreate method of the CMainFrame class. I have a static control and a button on that Dialogbar. I'm able to catch the button click event (using the mainframe menu) but I can't get the click event from the static control.

Can anybody help me out with this problem ?? OMG | :OMG:

Thanks
Jean Bédard

Re: Get click event from a DialogBar

Michael Dunn29-Sep-03 6:28

Michael Dunn

29-Sep-03 6:28

You need to handle WM_NCHITTEST in the static control, and return HTCLIENT. The default window proc for statics returns HTTRANSPARENT which makes the control invisible to the mouse.

--Mike--
Ericahist | Homepage | RightClick-Encrypt | 1ClickPicGrabber
CP SearchBar v2.0.2 released

How to convert a pointer to char*?

DaFrawg29-Sep-03 2:10

DaFrawg

29-Sep-03 2:10

(I know this isn't really VC++)(Or is it?)(Anyway, it's not MFC)

Example:

void main(){<br />
   int nInt;<br />
   int *pInt;<br />
   cout << /*help?!*/<br />
}

I want to output the memory location of nInt. This location is saved into pInt Sigh | :sigh:

.
The memory location is for instance 3031:3233, so pInt contains 0x30313233. If I would convert this (how) to char*, it'd say "0123". But what I want is 0x30313233 to be converted to a string saying "0x30313233". How is that possible? Confused | :confused:

I know it is weird, but this is what I tried:

void main(){<br />
   int nInt;<br />
   int *pInt;<br />
   cout << char*(void*(pInt));<br />
}

//Excuse me for my bad English. Blush | :O

//---QUOTE---
//
//"ERROR: Keyboard not present - Press F1 to continue" - Most BOIS chips

Re: How to convert a pointer to char*?

Bernhard29-Sep-03 2:20

Bernhard

29-Sep-03 2:20

Maybe this works? (haven't tried it out yet)
cout << "hex = 0x" << hex << (void*) pInt;

"I'm from the South Bronx, and I don't care what you say: those cows look dangerous."
U.S. Secretary of State Colin Powell at George Bush's ranch in Texas

Re: How to convert a pointer to char*?

Adam Gritt29-Sep-03 2:35

Adam Gritt

29-Sep-03 2:35

take a look at the function sprintf. it has the features that you are looking for and is part of the c runtime.

Re: How to convert a pointer to char*?

Iain Clarke, Warrior Programmer29-Sep-03 3:47

Iain Clarke, Warrior Programmer

29-Sep-03 3:47

int nInt = 54321;
int *pInt = &nInt;
char buf [11]; // 8(number) + 2(0x) + 1(trailing null)
sprintf (buf, "0x%08x", (unsigned int)(pInt));
cout << buf;

I must be in a good mood. Normally I'm not this helpful!

Iain.

Re: How to convert a pointer to char*?

David Crow29-Sep-03 5:21

David Crow

29-Sep-03 5:21

DaFrawg wrote:
I want to output the memory location of nInt.

This printed out the address for me:

int     nNumber,
        *pAddr;
 
pAddr = &nNumber;
cout << pAddr << endl;

If you want that address in a char* variable, use:

char addr[32];
sprintf(addr, "%#x", pAddr);
cout << addr << endl;

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: How to convert a pointer to char*?

JT Anderson29-Sep-03 13:33

JT Anderson

29-Sep-03 13:33

How about this:

#include <iostream>

void main()
{
int iVar;
void *pVar = &iVar;

std::cout << pVar << std::endl;
}

--------
There are 10 types of people in this world. Those who know binary and those who don't.

Auto-hide Groupbox - is there ?

vgrigor29-Sep-03 2:04

vgrigor

29-Sep-03 2:04

I found that some controls in CDialog are always not need,
so it is better to hide them,
They are in a some GroupBox.
and let for user to do it..

I did nor found such a article.

http://www.codeproject.com/miscctrl...target=groupbox
- no hiding

Is there such a control?

May be stack CDialog is useful for it?
- hiding groupbox?
(Big reconstruction is need?)

thanks you.

Re: Auto-hide Groupbox - is there ?

Iain Clarke, Warrior Programmer29-Sep-03 4:02

Iain Clarke, Warrior Programmer

29-Sep-03 4:02

Try here[^]

And change it to alter the inner windows, rather than disable them.
Also look in the www.codeproject.com/dialog(s?) section as well as www.codeproject.com/miscctrl.

Or you could even write the code!!!!! [*]

Iain.

[*] if you do, think about turning it into an article.

Re: Auto-hide Groupbox - is there ?

vgrigor29-Sep-03 4:04

vgrigor

29-Sep-03 4:04

I Need hide content ability.

MFC Dialog

hph29-Sep-03 1:19

hph

29-Sep-03 1:19

Hi,

does somebody know a function which retrieves the HWND handle of the titlebar ?

Thanks in advance!

Re: MFC Dialog

Member 21830429-Sep-03 1:46

Member 218304

29-Sep-03 1:46

GetWindowText I suppose

Re: MFC Dialog

Roger Allen29-Sep-03 2:27

Roger Allen

29-Sep-03 2:27

There isn't a direct command to do this. The title bar is part of the non-client area of a regular window which has a caption. If you need a custom caption or something similar, do a quick search for the author "lorde" on CP, David Lorde (do his second name only), as he has published a really good article on custom captions.

Sorry, don;t have time to look the link up myself.

Roger Allen
Sonork 100.10016

Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003

Open MSWord doc at specific bookmark (ShellExecute?)

Steve Kearon29-Sep-03 0:13

Steve Kearon

29-Sep-03 0:13

I'm happily using ShellExecute to open DOC files and URLs.

I can append "#bookmark" to a URL for IE to open at the specific section of a page, but if I try the same with DOC files then it doesn't work - I don't even get the DOC file open.

Am I expecting too much of ShellExecute?
Is there some other technique for opening such files?

Many thanks

ocx 2 ???

The_Server29-Sep-03 0:12

The_Server

29-Sep-03 0:12

Hi again....

People...
Is there a way to convert my vcpp project
from "win32 app" to "ocx or somthing"...
so I can use it as a control... in other projects ???

=-=-=-=-=
The Server Rose | [Rose]

Bogus reload macro message

Anonymous29-Sep-03 0:05

Anonymous

29-Sep-03 0:05

Every now and again when I try to run a macro in VS6 I get the following message:
"One or more macro files have been updated. Would you like to reload all macros now?"
Even though I haven't touched any macro file.
Anyone know what can be causing this?
It seemed to only start occurring when I started using Windows XP.
Thanks,
Ed

Access struct in DLL

adamf8128-Sep-03 23:52

adamf81

28-Sep-03 23:52

Hi,

I'm having problems accessing a struct in a dll file using C++.

I have successfully loaded the DLL, and loaded and called some of the functions using LoadLibrary and GetProcAddress. However, there is an insert function that I am having difficulties with that requires a struct to be passed into it. This struct is defined within a file in DLL and must be populated before passed to the insert function.

I've looked for a similar function to GetProcAddress to use. I've also tried including the file within the DLL that defines the struct.

This one's got me completely banjaxed.

I'd appreciate any help at all.

Thanks,

Adam

Re: Access struct in DLL

Joaquín M López Muñoz29-Sep-03 0:03

Joaquín M López Muñoz

29-Sep-03 0:03

You don't need to import anything in order to use a struct. Just #include in your main app the header where the struct is defined and use it like always. Is this what you were asking?

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Access struct in DLL

adamf8129-Sep-03 0:16

adamf81

29-Sep-03 0:16

Ahhh, of course. Thank you very much. Now I'm receiving a new error.

Cannot open include file: 'winsds.h': No such file or directory

This must be specific to the dll I'm loading.

Thanks for your help. I was looking for a tough solution.

Adam

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