C / C++ / MFC Discussion Boards

Re: Creating a systemwide hook dll in vc++ that can be used in vb

percyvimal30-Nov-03 23:29

30-Nov-03 23:29

Sorry Sir I have done a small mistake and i corrected it after that

TCHAR testch = static_cast<tchar>( msg->wParam );

switch (testch)
{

case 'a':
I did this way and it worked and sorry for giving you trouble in way of wrongly implemented codings.

Any way it may be helpful for some young programmers like me in future to figure out they may go wrong here.
You have been one of the influencing person for me for i never seen anybody has so helping like you and i really appreciate your help for young students like me.

I really looking forward to your help further in my project and i try to do the project my self, the most but i will seek your help if i am in trouble.

I put this above comment in this forum to let other students like me to know who are the right persons to ask doubt for and who can provide you the right codings and idea for you.

Thank you very much sir,
vimal

Re: Creating a systemwide hook dll in vc++ that can be used in vb

percyvimal12-Dec-03 19:19

percyvimal

12-Dec-03 19:19

Hello Sir

I need your help in these areas

1.I have created a dll and mapped into other applications and it changes the character what i want to send.
Now the problem i have is, i have to have a variable which is global to all the application.

Say for example i have a variable in dll
callled MYAPP

in my callback function i am checking

if (MYAPP=0)
{
Then do this process A
}
else(MYAPP=1)
{
Then do this process B
}

I have plan to change this variable MYAPP from my application as either
MYAPP= 0 for certain conditions
MYAPP=1 for certain conditions

Sir could you provide my some solutions how to declare this variable in dll and how i can use this varaible in my application to access that variable

I also need how to declare this varaible in header files also.

thanks in advance

Re: Creating a systemwide hook dll in vc++ that can be used in vb

percyvimal8-Jan-04 17:49

percyvimal

8-Jan-04 17:49

Hello sir

in using wh_getmessage hook i have these problems

I need to type cast msg->wParam =VK_BACK
and post new characters using POSTMESSAGE api

problem i am having is if use postmessage then posted message 's character also coming again to my filter function
with the character code which i have send
ie say i type a then i type b , now i change b-> backspace and
postmessage(c ,b)
since i have changed b to backspace ,, the character which i posted ie c and b are also coming to filter function

since i dont change c to some other character no problem but since i have changed b to backspace the postmessage(b) also changes to backspace

how to prevent posted message not coming back to my filter function

i tried with a boolean but it dont work properly

so could you give me some idea sir how to implement this one

thanks in advance
with regards
vimal

How to create Tree view for displaying directory structure in vc++

harsh91113-Nov-03 18:35

harsh911

13-Nov-03 18:35

Can any one please tell me how to create a Tree view for displaying directory structure in vc++.i want to create the tree view like a "windows explorer" program.

Re: How to create Tree view for displaying directory structure in vc++

Prakash Nadar13-Nov-03 18:50

Prakash Nadar

13-Nov-03 18:50

http://www.codeproject.com/useritems/drivebrowsingtree.asp Smile | :)

The World is getting smaller and so are the people.

Dynamic object creation

Ravi Jadhav13-Nov-03 18:10

Ravi Jadhav

13-Nov-03 18:10

Hi..

In c++ how can i create a new object of a class depending on the contents of the string. Suppose a function is there which takes input argument as a string which is nothing but a class name and that function will return me a new object of that class. something like...

char strClassName[] = "CTest";
CTest* pTest = new ??

now what will be replaced with ?? and i want to use that strClassName string.
class CTest is an example i can replace that with any class name. Whatever the class name appears in the strClassName that class's object should get created. Something like RUNTIME_CLASS macro in MFC. in this macro it uses ## to parsing token. Same thing i want to achieve not using MFC. how can i do that.

Thanks
Ravi

Re: Dynamic object creation

Prakash Nadar13-Nov-03 21:56

Prakash Nadar

13-Nov-03 21:56

Its a simple use of logic i guess..

Class Class1 : public CBase
{
public:
void WhoAmI() //virtual fucntion in base class.
{
printf("i am class1");
};

};

Class Class2 : public CBase
{

void WhoAmI() //virtual fucntion in base class.
{
printf("i am class2");
};
};

char szClassName[] = "Class1";

void main()
{
CBase *pClass;
if(!strcmp(szClassName,"Class1"))
{
pClass = new Class1;
}
else
....

pClass->WhoAmI();
...
}

The World is getting smaller and so are the people.

Re: Dynamic object creation

Antti Keskinen13-Nov-03 22:02

Antti Keskinen

13-Nov-03 22:02

It requires more thought that that. The RUNTIME_CLASS macro in MFC uses the runtime information gathered by MFC to create new objects.

In plain C++, the most effective approach would be to analyse the string the user has posted, and create a new object based on this info. For an example:

   // Create a void pointer
   void* ptrObject = NULL;<DIV>

   // Analyze the string
   if ( _stricmp(strClassname, "CTest") == 0 )
   {
        // We have a match, so do a pointer conversion from void* to CTest*
        ptrObject = reinterpret_cast<CTest*>(ptrObject);<DIV>

        // Create a dynamic object
        ptrObject = new CText(...);
   }
<DIV>
   ... Use the object ...
<DIV>
   // Free the memory
   delete ptrObject;

This code piece will analyze the input and create a new object based on the input. The void-pointer is used because we want the pointer to be global for the function, but we do not know it's type until we analyze the string. Be especially careful that you initialize the pointer to NULL before doing the cast conversion. Otherwise your compiler might throw you a warning.

-Antti Keskinen

----------------------------------------------
The definition of impossible is strictly dependant
on what we think is possible.

Creating a burning and circling text

nhanquy8313-Nov-03 17:00

nhanquy83

13-Nov-03 17:00

hi,

I'm a VietNamese student, now i'm doing a project with the ower-draw
control and I want to create a dialog that like your RGN Generator.
Would you please tell me how to create A RGN Generator text with the
burning fire around it and a button with the text circling it.

Thanks

Custom Control

Prakash Nadar13-Nov-03 17:00

Prakash Nadar

13-Nov-03 17:00

Hello Guys,
Is it advisable to design a new control derived from CWnd like CButtons in stuff?
Can any one give me or direct me to a sample that has done it so that i can understand the complexity involved.

Thanx in advance.

Yo!

Re: Custom Control

KKR13-Nov-03 19:59

KKR

13-Nov-03 19:59

Search for CRulerWnd/ CRulerWindow in codeproject,which allows to create/use custom control Ruler(Scale)

Warm Regards,
KKR

Re: Custom Control

Prakash Nadar13-Nov-03 21:28

Prakash Nadar

13-Nov-03 21:28

Thanx Mate,

Regards,
Prakash.;)

The World is getting smaller and so are the people.

How can I crack an encryped-zip file or a encrypted Word document?

earthquake_cui13-Nov-03 16:30

earthquake_cui

13-Nov-03 16:30

How can I crack an encryped *.zip file or an encrypted Word document? as we have known, decryption needs its algorithm and its key, but we don't know the encryption algorithm of it, I want to try the key one by one by using a hacker dictionary,

how can I do it? I want someone will help me~

I am a Chinese boy

Re: How can I crack an encryped-zip file or a encrypted Word document?

alex.barylski13-Nov-03 16:45

alex.barylski

13-Nov-03 16:45

Prolly wrong place to ask that question... Suspicious | :suss:

The word of the day is legs, let's go back to my house and spread the word Poke tongue | ;-P

Re: How can I crack an encryped-zip file or a encrypted Word document?

Prakash.13-Nov-03 16:55

Prakash.

13-Nov-03 16:55

Hahaha man you are so sick...Password are put so that ppl like you dont read them.

Re: How can I crack an encryped-zip file or a encrypted Word document?

Alexander ^M.,13-Nov-03 22:52

Alexander ^M.,

13-Nov-03 22:52

don't put your nose into stinking things!

Don't try it, just do it! Wink | ;-)

GDI doubt?alternative to SetPixel

fordge13-Nov-03 16:25

fordge

13-Nov-03 16:25

ive used GetDIBits to get the bitmaps images RGB data into a

byte array

so effectively i can modify the rgb values of the image by just modifying the bits in the byet array buffer.

i tried creating a function

SetPixelColor(LPBYTE imgBuf,int column,int row,DWORD dwColor)
{
}

that is supposed to set the dwColor for pixel at row and column specified

however im having problems in mapping the row and column to the 1D LPBYTE buffer

please advice??
or is there any other alternative APIs

SDI Status text

Anonymous13-Nov-03 16:19

Anonymous

13-Nov-03 16:19

How can i change the text in the status bar for an SDI document >

Re: SDI Status text

twing13-Nov-03 21:53

twing

13-Nov-03 21:53

try it !
probably
AfxGetApp()->m_hMainWnd->GetDescendWindow(yourstatusbarID);

Hello World!

HTTP proxy example

alex.barylski13-Nov-03 12:59

alex.barylski

13-Nov-03 12:59

I would like to write a proxy compatible with windows 98/XP.

I have looked at the articles here on CP and the two relevent articles don't apply to my particular problem I don't think.

For instance, the firewall example here on CP uses features specific to XP (I think). I want to write a firewall, but need it to work in win 98 also. Does anyone know of articles which might explain the different approaches used in writting a http proxy? basically I just want to capture HTML before being sent to browser, preferably both IE and Netscape. I have already considered using IWebBrowser2 to accomplish what I want to do also.

Edit Actually I really need to capture HTTP and HTML...so maybe IWebBrowser2 wouldn't work at all Frown | :(

Thanks

The word of the day is legs, let's go back to my house and spread the word Poke tongue | ;-P

Re: HTTP proxy example

Peter Molnar13-Nov-03 13:47

Peter Molnar

13-Nov-03 13:47

If you wanna watch or manipulate HTML data before displaying it in a webbrowser than see:
http://www.codeproject.com/tools/webcondom.asp[^]

Bunburry

Re: HTTP proxy example

alex.barylski13-Nov-03 16:41

alex.barylski

13-Nov-03 16:41

Coolness

Thanks

The word of the day is legs, let's go back to my house and spread the word Poke tongue | ;-P

serial communication

codekey13-Nov-03 12:17

codekey

13-Nov-03 12:17

I want to design a windows program that can communicate using the serial port. I bought C#.net standard not knowing it did not have serial communcations framework and the work around is using MSComm.ocx from Visual Studio 6 which i do not have. Does C++.net standard have serial port communications framework? Or would buying Visual Studio.net solve my issue?
Thanks,

karl

Re: serial communication

Peter Molnar13-Nov-03 13:31

Peter Molnar

13-Nov-03 13:31

For serial communication over COM port you have to use API functions like
CreateFile, WriteFile, ReadFile etc.
or alternatively you can use an OCX component, like MSComm.ocx.

Both ways can be achieved from C#, too.

Bunburry

setting focus to edit controls

RalfPeter13-Nov-03 11:47

RalfPeter

13-Nov-03 11:47

Does any one know a fairly easy way to set the focus to a given edit control in a dialog box? Thx,
Ralf.

ralf.riedel@usm.edu

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