Digital Mars C++ Compiler - C / C++ / MFC Discussion Boards

Re: Help with RAW TouchScreen DLL

Bram van Kampen4-Oct-08 13:44

Bram van Kampen

4-Oct-08 13:44

sodevrom wrote:
I can pay someone about 25$ (this is how much I have on paypal) if he can help.

Well, That's not how this forum works, and just as well for you. At the current going rate, you just might get one line of code out of your $25.00, but, don't worry, your funds are safe. I just answer this question because you struck a chord of interest in me.

sodevrom wrote:
A few months ago I asked a friend to make me a DLL that I can use in a programming language that I use (BlitzBasic).
This dll made it possible for me to use multiple mices (mouse) on a single PC

Don't understand that! Does that mean that you have several mousepointers on the screen? Or does it mean that you can have several physical mouses (mice) connected to the one computer, each moving the same single screen pointer.

sodevrom wrote:
I asked a friend to make me a DLL that I can use in a programming language that I use (BlitzBasic).

sodevrom wrote:
The friend that made the DLL has moved to another school ... and he can't help us.

Well, Join the Club. That always happens! The Crucial Question always is: Do you have the Source Code, Program Notes etc. Yoo have learned now that a 'friend' who donates a binary without those things is actually an Enemy.

sodevrom wrote:
I asked a friend to make me a DLL that I can use in a programming language that I use (BlitzBasic).

The DLL sounds as if it was written in 'BlitzBasic'. why do you think that a CPP Forum can Help you. I Personally have never heard of the language, but maybe, despite it's name, its actually an MFC Library.

Have you 'Googled' for 'BlitzBasic' There is always the possibility that your 'Friend' instead of writing the dll, downloaded it, or downloaded sample code and modified it.

Regards Smile | :)

Bram van Kampen

Re: Help with RAW TouchScreen DLL

sodevrom4-Oct-08 13:53

sodevrom

4-Oct-08 13:53

Hello,
Thank you for your response, and sorry if I insulted the forum with my topic Smile | :)

.

The DLL is writen in C++, and it was made specialy for BlitzBasic, but you can use it just as well in a C++ application.
The source is not very commented, but it's only one Cpp file, that handles everything. The code is not hard, I understand it, but what I don't understand is how I can make it work with a touch screen monitor.

The DLL works detects all mice (physical) that are plugged in the computer. So you can have a logitech mouse and an a4 tech (or any other .. up to 10 mice) .
In my game, I draw 2 different cursors, on position X and Y of the specific mouse. So you view 2 different cursors, and they move independently.

Below I will give you some links, maybe (if you have time) can help.
Here is a document from ELO touch, on the touch screen monitors :
http://media.elotouch.com/pdfs/manuals/program.pdf
Here is a simple APP that works with multiple mice (just connect 2 mice on your PC and start moving them after you start the app).
http://www.sodevrom.net/sample.zip
Here is the CPP file (I have the SLN for Visual Studio, and if you think you can help, I will link that also).
http://www.sodevrom.net/RawInput.cpp

Thank you very much

Re: Help with RAW TouchScreen DLL

Bram van Kampen4-Oct-08 14:53

Bram van Kampen

4-Oct-08 14:53

sodevrom wrote:
The source is not very commented, but it's only one Cpp file, that handles everything. The code is not hard, I understand it, but what I don't understand is how I can make it work with a touch screen monitor.

Can you Publish the code on this Forum. It'll give us something to go by.

sodevrom wrote:
The DLL is writen in C++, and it was made specialy for BlitzBasic, but you can use it just as well in a C++ application.

Well, the jury is out on that one! String representation in CPP and Basic are entirely different.

sodevrom wrote:
http://www.sodevrom.net/sample.zip
Here is the CPP file (I have the SLN for Visual Studio, and if you think you can help, I will link that also).
http://www.sodevrom.net/RawInput.cpp

Before I read this, Is that the code your unapproachable friend gave you?

regards,
Smile | :)

Bram van Kampen

Re: Help with RAW TouchScreen DLL

sodevrom4-Oct-08 14:59

sodevrom

4-Oct-08 14:59

Hi,
Yes, this is the code made by the "unapproachable" friend Smile | :)

.
The code is to large to post it in this topic, I uploaded the entire Visual Studio project here :
www.sodevrom.net/proj.zip
Just unzip and run SLN Wink | ;)

.

BlitzBasic is a game making software. The ideea is that it can only work with INT and STRINGS, and that's why the DLL automaticaly converts INT and STRINGS passed by my game, in whatever he needs to work.
So this is not a problem the DLL (the source if you compile it) works now perfectly, as I sayed, but it only works with multiple mouse (mice) .
The thing is I need it to work with touchscreen monitor.

Thank you

Re: Help with RAW TouchScreen DLL

cmk5-Oct-08 1:10

cmk

5-Oct-08 1:10

In the init() function he sets RidInputDevice[0].usUsage = 2, this will only capture mouse messages.

Change RidInputDevice[1] to RidInputDevice[2] at start of file and init RidInputDevice[1] in init() with usUsage = 1 (pointer).

In ProcessInputData() you _may_ need 'if( ... dwType == RIM_TYPEHID )' to catch the messages, you shouldn't, pointers are considered 'mouse like' (mouse and pointer both HID_DEVICE_SYSTEM_MOUSE).

Set a breakpoint in ProcessInputData(), touch the screen, look at the data.

You'll likely need to do more. Read the MSDN doc's about the RAW input API.

...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

Re: Help with RAW TouchScreen DLL

sodevrom23-Oct-08 13:07

sodevrom

23-Oct-08 13:07

Hello,
I am trying to make this work for over 1 week now, and no luck.
I made the modifications you sayed + more.
I made the source compile to exe (console) so I can keep track of the data.

I attached a window to the console, and whenever I move the mouse/click in the window, the console prints what is happening.
The problem is that when I connect the touchscreen, and use RIM_TYPEHID , it does nothing.
I set a simpel cout<<"AA"; whenever it gets in the if RIM_TYPEHID branch, but it never does.

Any suggestions ? help ? Frown | :(

I also noticed that the riRawInput.data.mouse.lLastX; (and Y) for the mouse are always values that change to 0, so they are showing the motion of the mouse.
When I touch the touchscreen, the values go up to 5 000.

I don't know what to say ... I just need the touchx/y absolute position (or relative).

I hope someone can help.
Thanx

Re: Help with RAW TouchScreen DLL

sodevrom24-Oct-08 13:09

sodevrom

24-Oct-08 13:09

I managed to make it work.
I didn't have to make ANY Changes (add a new raw device).
The check :
riRawInput.data.mouse.usFlags == MOUSE_MOVE_RELATIVE is for mouse
and the check
riRawInput.data.mouse.usFlags == 3 is for touch screen.

After getting this, you will have to calibrate the device, and all will be perfect :

1. Prompt the user to touch the upper left corner of the video screen.
2. Save the coordinates returned as TOUCH_UL_X and
TOUCH_UL_Y.
3. Prompt the user to touch the lower right corner of the video screen.
4. Save the coordinates returned as TOUCH_LR_X and
TOUCH_LR_Y.
A good way to prompt the user to touch the corners is to draw a
border around the edge of the screen and prompt the user to touch
each point using a target in the respective corner and text centered
on the screen.
5. Calculate the four calibration parameters as follows:
OFFSET_X = TOUCH_UL_X
OFFSET_Y = TOUCH_UL_Y
SCALE_X = VIDEO_MAX_X / (TOUCH_LR_X -
TOUCH_UL_X)
SCALE_Y = VIDEO_MAX_Y / (TOUCH_LR_Y -
TOUCH_UL_Y)
6. Save the four calibration parameters to a nonvolatile storage area, if
available. If none is available, the calibration procedure must be
followed each time the system is powered up.
The floating point calibration procedure is now complete. In your
application program, convert the touch coordinates reported by the
touch system into the equivalent video coordinates with these equations:
VIDEO_X = SCALE_X * (TOUCH_X - OFFSET_X)
VIDEO_Y = SCALE_Y * (TOUCH_Y - OFFSET_Y)

Digital Mars C++ Compiler

Matthew Faithfull4-Oct-08 9:25

Matthew Faithfull

4-Oct-08 9:25

Does ayone who frequents this page use the Digital Mars C++ compiler for Win32 development?
I've recently got a freebie copy of it and had a go at compiling some existing code. So far so good but the Win32 headers it ship with seem to be way behind. I need SDK 6.1 compatibility which is clearly going to be tricky.
Their site doesn't seem to be very up to date, forums are dead for the past few months and most online docs look seriously old.
Is DMC still really a live product? Is it worth me shelling out for the full version on CD? Or has MS giving away express versions of Visual Studio killed off this alternative compiler?
Any ideas as to where else to go for some answers are welcome too.

"The secret of happiness is freedom, and the secret of freedom, courage."
Thucydides (B.C. 460-400)

sockets - chat server console program from articles - in mfc with error

simon alec smith4-Oct-08 7:05

simon alec smith

4-Oct-08 7:05

I am trying to port a console chat server program to mfc
from the articles

when I declare
///////////////////////
SOCKET m_SClient;
SOCKET m_SListenClient; // socket listening for client calls
/////////////////////

I get the following, am i missing an include

unresolved external symbol __imp__listen@8
symbol __imp__bind@12
d external symbol __imp__socket@12
unresolved external symbol __imp__htons@4
unresolved external symbol __imp__WSAStartup@8
unresolved external symbol __imp__accept@12
unresolved external symbol __imp__send@16
unresolved external symbol __imp__recv@16
LNK1120: 8 unresolved externals

Re: sockets - chat server console program from articles - in mfc with error

CPallini4-Oct-08 7:11

CPallini

4-Oct-08 7:11

As stated by the documentation (see, for instance, [^]), you must link with ws2_32.lib library.
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.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: sockets - chat server console program from articles - in mfc with error

simon alec smith4-Oct-08 7:27

simon alec smith

4-Oct-08 7:27

thanks

Re: sockets - chat server console program from articles - in mfc with error

Moak6-Oct-08 23:25

Moak

6-Oct-08 23:25

Additional to what Pallini said, here are two good resources to start at:
http://beej.us/guide/bgnet/[^]
http://tangentsoft.net/wskfaq/[^]

Hope it helps Smile | :)

My webchat in Europe Java | [Coffee]

list <SOCKET> --- got code statement (list) from a socket article in console, ----> in MFC a compile error [modified]

simon alec smith4-Oct-08 6:26

simon alec smith

4-Oct-08 6:26

here is the following statement,

//////////////////////////////////
list<SOCKET> m_vClientList; // All sockets connected to client
//////////////////////////////////

I have included the #include <list>

the program in question, is an internet chat, one server to many
clients

also a declartion in the header file
/////////////////////
int SendMessagePort(string sMessage);
//////////

has a problem with (string) I know that mfc deals with CString
but in this case it might help with my query.

I gather that I need an ---#include of somesort, do you know what it is.

thanks very much

modified on Saturday, October 4, 2008 12:38 PM

Re: (list <-SOCKET->) --- got code from a socket article in console, ----> in MFC compile error

CPallini4-Oct-08 6:37

CPallini

4-Oct-08 6:37

You've to include <list></list>, <string></string> and add the using namespace std; directive. For instance

// mysource.cpp
#include <list>
#include <string>
using namespace std;
// ... your code
</string></list>

Re: (list <-SOCKET->) --- got code from a socket article in console, ----> in MFC compile error

simon alec smith4-Oct-08 6:45

simon alec smith

4-Oct-08 6:45

Thanks,

How can i convert "Convert CString[] to char[]" ?

Le@rner4-Oct-08 2:10

Le@rner

4-Oct-08 2:10

Hi all

please tell me how can i convert Convert CString[] to char[].

CString str[10];
char buff_1[]="";

buff_1= str;

error is "error C2440: '=' : cannot convert from 'CString [10]' to 'char [1]'"

Thanks in advance.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Re: How can i convert "Convert CString[] to char[]" ?

Jaime Olivares4-Oct-08 2:40

Jaime Olivares

4-Oct-08 2:40

you should define buff_1 as char*:

char * buff_1;

and then:

buff_1 = (LPCTSTR)str; // for read-only purposes

buff_1 = str.GetBuffer(0); // for read-write, you will need to use ReleaseBuffer() later

Best regards,
Jaime.

Re: How can i convert "Convert CString[] to char[]" ?

CPallini4-Oct-08 2:42

CPallini

4-Oct-08 2:42

They're two quite different entities:
(1) CString str[] is an array of strings.
(2) char buff[] is just 1 string.
hence the conversion does not make sense.
Smile | :)

Re: How can i convert "Convert CString[] to char[]" ?

David Crow4-Oct-08 3:27

David Crow

4-Oct-08 3:27

"_$h@nky_" wrote:
CString str[10];

I'm guessing thia is not what you think it is. It's an array of 10 CString objects, not an array that holds 10 characters. In any case, try:

const char *buff_1 = str[0];

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

How to display the program code as output using C or C++

Karan_TN4-Oct-08 1:02

Karan_TN

4-Oct-08 1:02

hai,
i would like to display the coding.
Means, while i m running my C/C++ program the output should be of the program coding which i m execting.....

how can i do it? Help me!

Thanks for understanding!!!

Re: How to display the program code as output using C or C++

enhzflep4-Oct-08 1:10

enhzflep

4-Oct-08 1:10

You need to (A) debug a debugger or (B) dissasemble/decompile a dissasembler/decompiler

Then, the program running would be doing nothing other than producing output that contained the program's source-code

I don't understand your question, as it stands. The effort would be pointless - an act of 'because I can'

Re: How to display the program code as output using C or C++

Karan_TN4-Oct-08 1:16

Karan_TN

4-Oct-08 1:16

Thanks for immediate reeply

for example...

my program coding is..

#include<stdio.h>
#include<conio.h>
void main() 
{ 
float n1,n2,ans;
}</conio.h></stdio.h>

And the program output should be....

#include<stdio.h>
#include<conio.h>
void main()
{
float n1,n2,ans;
}

how to achieve it?

thanks in advance

Re: How to display the program code as output using C or C++

enhzflep4-Oct-08 1:39

enhzflep

4-Oct-08 1:39

Ahhhh....

I was afraid you were going to say that or words to that effect.

What you're looking for is a decompiler or a dissasembler. The difference is in the 'high-level'ness of their output. A dissasembler will turn a piece of executable code into an assembly listing. A decompiler on the other hand, will produce C (or most any other high level language within reason) code from an executable.

While it is true that a fairly large number of people have written dissasemblers, the same
can't be said for decompilers. It is a notoriously difficult & complex subject.

HexRays has a product that will turn an exe file into C source code - it is the $2000 plugin for IDA Pro interactive dissasembler.

You can find more info on HexRays here (they have a free version of IDAPro)
http://www.hex-rays.com/products.shtml[^]

Also, here are some links to decompilers/dissasemblers that people have coded themselves:
http://www.woodmann.com/collaborative/tools/index.php/Category:Decompilers[^]
http://www.woodmann.com/collaborative/tools/index.php/Category:Disassemblers[^]

'luck.

Re: How to display the program code as output using C or C++

Karan_TN4-Oct-08 2:04

Karan_TN

4-Oct-08 2:04

thanks for your reply.
whether this can be achieve in .net easily? or someother language?

Re: How to display the program code as output using C or C++

enhzflep4-Oct-08 2:39

enhzflep

4-Oct-08 2:39

Pleasure.

In every case I can immediately think of, these tools are compiled to native code. This of course implies the use of C/C++, asm & pascal though I've no idea if anything .NET would be suitable or not - I would assume it to be possible, albeit slow in execution on account of the code being interpreted at runtime.

Lutz Roeder's .NET Reflector will give you the source code of a .NET executable. The Deblector & Reflexil plugins are invaluable - HOWEVER these are all only available as binaries, so of very little to no interest to somebody trying to create a tool that achieves the same task.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.