yingkou2-Aug-04 14:45

yingkou

2-Aug-04 14:45

I want to know whether my program can obtain the message that system time is changed

Re: about system time

Tim Smith2-Aug-04 16:10

Tim Smith

2-Aug-04 16:10

Yes is can.

*cough*

WM_TIMECHANGE

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

Re: about system time

yingkou2-Aug-04 21:48

yingkou

2-Aug-04 21:48

thanks a lot

I Need some direction

cgriffin2-Aug-04 14:44

cgriffin

2-Aug-04 14:44

I am a macintosh programmer. I have many years of experience with C/C++. I need to port a plugin from the mac to the PC. I have an application that allows the user to design a custom dialog. This is not a general purpose dialog editor. When the user if finished, the application generates the resources for defining the dialog and combines that with the plugin code. The application is already running on windows. So what I need to do now is port the plugin to windows. It seems that a dll would be the right thing. So my first question is what should I use to write the plugin/dll (MFC, ATL, ??). The second is how do I embed the resources in the dll. If I can create all the dialog items programmatically then I could create my one data for describing the dialog items. If there is documentation for how to embed the resource and what the format is for each dialog item type then that would be acceptable as that is what I'm doing on the mac side now. I also need to embed some custom binary data. Not knowing windows programming I'm concerned that I might start down a path that will lead to a dead end.

Int 21h Function 440Dh Minor Code 41h (FAT32)

X20402-Aug-04 13:48

X2040

2-Aug-04 13:48

what is this and how can i use it

Int 21h Function 440Dh Minor Code 41h (FAT32)
Writes data from a buffer to a track on the specified device.

mov bx, Drive ;See below
mov ch, DeviceCat ;See below
mov cl, 41h ;Write Track on Logical Drive
mov dx, seg WriteBlock ;See below
mov ds, dx
mov dx, offset WriteBlock ;ds:dx points to RWBLOCK structure
mov ax, 440Dh ;IOCTL for block device
int 21h

jc error_handler ;carry set means error

Re: Int 21h Function 440Dh Minor Code 41h (FAT32)

Aamir Butt2-Aug-04 19:32

Aamir Butt

2-Aug-04 19:32

while programming dos, we have to program interrupts. These interrupts are like 10h, 13h, 21h etc, each made for a pre-specified purpose.

21h is called a DOS interrupt. This is a general-purpose interrupt. I guess I can't tell you the whole thing here or perhaps you will not be able to catch up with these things. You need to learn a little bit of System Programming in DOS and Assembly to exactly grab these.

Well, any way, I should continue. Every interrupt is/can be called with a major and minor code. This is like passing arguments to a function. And every major and minor code is for something specific. In this case, I guess major code of 440DH is telling DOS to communicate with the Disk and Minor Code must also be something specific. Now, you will have to check yourself what these codes do and how are these being handled in the next assembly statements.

Think Negatively, It makes you creative Confused | :confused:

How to Hook Notepad?

mrviceroy2-Aug-04 12:05

mrviceroy

2-Aug-04 12:05

What I am trying to make is a Sidekick translator.

As soon as a user launches it, it minimizes to taskbar.
When mouse is hovering on top of a word, it should pop up a tip-window with its corresponding explanation found in the database.

I've successfully hooked up Notepad.exe and had the following API functions replaced:
TextOutA, ExtTextOut, DrawTextA, DrawTextEx.
But none of them seems to be what Notepad uses to display text.

Could someone be of help?
Thanks a lot.

hmm

bikram singh2-Aug-04 18:07

bikram singh

2-Aug-04 18:07

Notepad is actually a standard, multi-line editbox...

mrviceroy wrote:
I've successfully hooked up Notepad.exe and had the following API functions replaced:
TextOutA, ExtTextOut, DrawTextA, DrawTextEx
How?!

Bikram Singh

Re: hmm

alex.barylski2-Aug-04 18:52

alex.barylski

2-Aug-04 18:52

bikram singh wrote:
How?!

Search for API hooks here at CP (or just hooks i'm not sure)

There is an article that explains all sorts of hooking techniques.

How do I print my voice mail?

Re: How to Hook Notepad?

(Steven Hicks)ⁿ⁺¹2-Aug-04 18:50

(Steven Hicks)ⁿ⁺¹

2-Aug-04 18:50

Visual C++ Developer's journal had an article on how to do this,

it was published by Fawcette pub, you should still be able to find it.

-Steven Hicks

CPA

CodeProjectAddict

Actual Linux Penguins were harmed in the creation of this message.

More tutorials: Ltpb.8m.com: Tutorials |404Browser.com (Download Link)

Re: How to Hook Notepad?

mrviceroy3-Aug-04 3:50

mrviceroy

3-Aug-04 3:50

Could you give me the time or url, please?
Thank you.

Re: How to Hook Notepad?

(Steven Hicks)ⁿ⁺¹3-Aug-04 11:32

(Steven Hicks)ⁿ⁺¹

3-Aug-04 11:32

fawcette.com/archives/premier/mgznarch/vcdj/2001/02feb01/de0201/de0201.asp[^]

-Steven Hicks

CPA

CodeProjectAddict

Actual Linux Penguins were harmed in the creation of this message.

More tutorials: Ltpb.8m.com: Tutorials |404Browser.com (Download Link)

Re: How to Hook Notepad?

mrviceroy3-Aug-04 11:34

mrviceroy

3-Aug-04 11:34

Thanks.

Hyperthreading

bs19772-Aug-04 11:43

bs1977

2-Aug-04 11:43

Hi All,

I have one application running on Windows 2000 server.
It's multithreaded app usingg lot of synchronization objects,STL library , and LDAP stuff. It's crashing after sometime when I enable hyperthreading.
I'm not able to find the reason of actual crash.
Is anyone aware of this issue ?

thanks
Ben

Re: Hyperthreading

wb2-Aug-04 20:30

2-Aug-04 20:30

maybe you have some receconditions, and with HT enabled, they occur faster. you must test a multithreaded app on a multi-CPU computer.

Re: Hyperthreading

bs19773-Aug-04 4:35

bs1977

3-Aug-04 4:35

I did test on multiprocessor system(Intel Xeon) and same issue. Hyperthreading is actually virtual two processor.
Is there any tool to check the race condtitions ?

Re: Hyperthreading

Henry miller3-Aug-04 4:50

Henry miller

3-Aug-04 4:50

Tools might exist you help, but you do not want to use them. You need to examine the code and prove that there are no race conditions. A tool might help you find the particular one that is hitting you this time, but gives no assurance that there are not 1000 more someplace, just waiting for machines to become faster, more loaded, or get more CPUs. Basicly you have no assurance that your program will work on a 32 processor machine with these tools. (Unless you can afford one, and even then test enough that the 1 in a million situation happens)

By prove I don't mean a full mathamatical proof, though that would work. However you need to read all the code looking for pointers passed across threads, and then make sure you are handling access correctly.

Good luck, but I know of no substitute for a lot of hard boring work.

QuickWin

Member 6256662-Aug-04 10:49

Member 625666

2-Aug-04 10:49

I downloaded the QuickWin example and opened the .sln file with "MS Visual C++ .net 2003". It asked to convertthe files, which I did. It compiled with the following error:

QuickWin.cpp(195) : error C2440: 'static_cast' : cannot convert from 'LRESULT (__thiscall CQuickWinApp::* )(WPARAM,LPARAM)' to 'void (__thiscall CWinThread::* )(WPARAM,LPARAM)'

I had a buddy try it under VC++ 6 and he had no problems.

Does anyone have any ideas or pointers.

Thanks

DCrawford999

Re: QuickWin

PJ Arends2-Aug-04 16:08

PJ Arends

2-Aug-04 16:08

With VC7 user defined message handlers have to return an LRESULT, they can no longer be void functions. VC6 allowed void functions.

// in message map
ON_MESSAGE (WM_MYMESSAGE, OnMyMessage)
 
// VC6
void CMyApp::OnMyMessage(WPARAM wp, LPARAM lp)
{
   // whatever
}
 
// VC7
LRESULT CMyApp::OnMyMessage(WPARAM wp, LPARAM lp)
{
   // whatever
   return 0;
}

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: QuickWin

Member 6256663-Aug-04 4:05

Member 625666

3-Aug-04 4:05

The void is coming from afxmsg.h dealing ON_REGISTERED_THREAD_MESSAGE but I am not sure how too clear up the conflict.

ON_REGISTERED_THREAD_MESSAGE(WM_STDIO_COMMAND, OnStdioCommand)

// for Thread messages
#define ON_THREAD_MESSAGE(message, memberFxn) \
{ message, 0, 0, 0, AfxSig_vwl, \
(AFX_PMSG)(AFX_PMSGT) \
(static_cast< void (AFX_MSG_CALL CWinThread::*)(WPARAM, LPARAM) > \
(memberFxn)) }

Re: QuickWin

PJ Arends3-Aug-04 7:43

PJ Arends

3-Aug-04 7:43

Read the first 200 lines of AfxSig_.h. It explains a lot of how the naming convention of functions work.

AfxSig_vwl = AfxSig_v_w_l,     // void (UINT, LPARAM)

means your OnStdioCommand prototype has to be

void CMyWinThread::OnStdioCommand(UINT uInt, LPARAM lParam)

I hope this helps.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: QuickWin

Member 6256663-Aug-04 7:47

Member 625666

3-Aug-04 7:47

If I change it to a VOID and remove the return, I get:

QuickWin.cpp(196) : error C2440: 'static_cast' : cannot convert from 'LRESULT (__thiscall CQuickWinApp::* )(WPARAM,LPARAM)' to 'void (__thiscall CWinThread::* )(WPARAM,LPARAM)'
None of the functions with this name in scope match the target type

DCrawford999

Re: QuickWin

PJ Arends3-Aug-04 8:16

PJ Arends

3-Aug-04 8:16

Did you also change the function prototype in the header file?

Look up C2440 in MSDN for more info on the error message.

I am starting to guess here, as I do not have your code in front of me

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: QuickWin - Solved

Member 6256663-Aug-04 8:32

Member 625666

3-Aug-04 8:32

Many thanks. I forgot to change the prototype (rookie mistake).

DCrawford999

hide from tm in win xp

Spiritofamerica2-Aug-04 10:27

Spiritofamerica

2-Aug-04 10:27

Hi

I read somewhere of a way to hide from the task mgr in win nt(and later) like this(well this is a adaptation-I put this code togheather but I got the ideas and stuff from there where I read):

LONG (PASCAL FAR *RegisterServiceProcess)(ULONG, ULONG);

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
HMODULE k32=GetModuleHandle("KERNEL32.DLL");
if(k32)
{

(FARPROC &)RegisterServiceProcess=GetProcAddress(k32,"RegisterServiceProcess");

//RegisterServiceProcess(NULL,1);

if(RegisterServiceProcess)
{

RegisterServiceProcess(NULL,1);
MessageBox(0,"in momentu asta ar trebui sa nu ma mai vad in task manager","parerea mea",MB_OK);
}
}

while(true)
{
Sleep(1);
}
return 0;
}

but it doesn't seem to work. Why?

anybody know?

I am running win xp with sp1. thank you in advance.

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