Question about MSDN example - C / C++ / MFC Discussion Boards

Michael Dunn21-Dec-02 13:46

21-Dec-02 13:46

Use the ON_CONTROL_REFLECT macro in your message map to handle the notifications in the CComboBox-derived class.

--Mike--
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DLL_PROCESS_ATTACH und geladene Module

21-Dec-02 6:36

Heyo, (english version ... when u can call it Wink | ;)

is attached as reply)
Ich versuche im Moment in einer EXE-Datei einen Import zu verändern, dass klappt ganz gut und wunderbar, wenn diese Funktion aus der EXE-Datei heraus aufgerufen wird.

Sobald ich dies aber bei einer anderen EXE-Datei machen möchte, bei der ich in den Prozess eingeschleust werde - über ein WH_CBT - funktioniert dies jedoch nicht, da die DLLs zu diesem Zeitpunkt noch nicht initialisiert wurden.

Da bereits in der win_main der veränderte Import benutzt werden soll kann ich auf keine anderen Hooks zurückgreifen.

Weis jemand wie ich An die Initialisierte Importtable komme, bevor diese benutzt wird ?

Vielen Dank schonmal

Also, ich setze einen CBT Hook:
(innerhalb der DLL die in den Zielprocess reinmuss)

<br />
LRESULT CALLBACK CBTProc(int nCode,WPARAM wParam,LPARAM lParam) {<br />
    return CallNextHookEx(CBThook,nCode,wParam,lParam) ;<br />
} ;<br />
<br />
void WINAPI InstallNCT(void) {<br />
    GWMhook = SetWindowsHookEx(WH_CBT,&CBTProc,GetModuleHandle("MYDLL.dll"),NULL );<br />
} ;<br />

Dieser Code wird mit der ProzessID des Launchers ausgeführt. Sobald ein neuer Prozess erstellt/aktiviert ist wird der folgende Code durchgeführt:

 <br />
BOOL APIENTRY DllMain( HANDLE hModule, <br />
                       DWORD  ul_reason_for_call, <br />
                       LPVOID lpReserved<br />
                     )<br />
{<br />
    switch (ul_reason_for_call)<br />
    {<br />
        case DLL_PROCESS_ATTACH:<br />
            if (isZielProzess()) {<br />
                HMODULE thismod = GetModuleHandle("MYDLL.dll") ;<br />
                LPVOID addr = GetProcAddress(thismod,"MyOverrideFunction") ;<br />
                ChangeImport_("D3DDrv.dll","DDRAW.dll","FunctionName",addr) ;<br />
            } ;<br />
            return TRUE ;<br />
        case DLL_THREAD_ATTACH:<br />
        case DLL_THREAD_DETACH:<br />
        case DLL_PROCESS_DETACH:<br />
            break;<br />
    }<br />
    return TRUE;<br />
} ;<br />

Wobei ChangeImport_(ModulName,ImportModulName,ImportFunctionName,Addresse) ;
in der MudulName.dll den Import aus der ImportModulName.Dll mit dem Namen ImportFunctionName mit der Addresse überschreibt.

Nun funzt das nicht, da die D3DDrv nich initialisiert ist... aber ich brauchs funzent

Re: DLL_PROCESS_ATTACH und geladene Module

Anonymous21-Dec-02 6:40

Anonymous

21-Dec-02 6:40

In English:

I want to modify import locations. Therefor i CBT hook 'em and change them at the DLL_PROCESS_ATTACH.

But this doesnt work and because the dlls are not yet initialized when i want to modify.

(see code above)

How can i change the imports form other prozesses ?

Thx in advance.

Reg path from an HKEY

Nish Nishant21-Dec-02 6:33

Nish Nishant

21-Dec-02 6:33

Hey all,

Given an open HKEY is it possible to get the actual registry path it's pointing to?

Regards,
Nish

p.s. I believe it is possible via an undocumented kernel API call.

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Reg path from an HKEY

Jason Henderson21-Dec-02 8:33

Jason Henderson

21-Dec-02 8:33

This might do it, but I haven't tried it.

<code>LONG RegQueryInfoKey(
  HKEY hKey,                      // handle to key
  LPTSTR lpClass,                 // class buffer
  LPDWORD lpcClass,               // size of class buffer
  LPDWORD lpReserved,             // reserved
  LPDWORD lpcSubKeys,             // number of subkeys
  LPDWORD lpcMaxSubKeyLen,        // longest subkey name
  LPDWORD lpcMaxClassLen,         // longest class string
  LPDWORD lpcValues,              // number of value entries
  LPDWORD lpcMaxValueNameLen,     // longest value name
  LPDWORD lpcMaxValueLen,         // longest value data
  LPDWORD lpcbSecurityDescriptor, // descriptor length
  PFILETIME lpftLastWriteTime     // last write time
);</code>

Jason Henderson
^{start page ; articles}
_{henderson is coming}
^{henderson is an opponent's worst nightmare}
^{* googlism *}

Re: Reg path from an HKEY

Nish Nishant21-Dec-02 10:35

Nish Nishant

21-Dec-02 10:35

Thanks Jason, but that doesn't do that Frown | :-(

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Reg path from an HKEY

Scott H. Settlemier23-Dec-02 12:47

Scott H. Settlemier

23-Dec-02 12:47

I don't see it in the settlement program stuff[^].
Anyone able to clarify a bit more on utility of some of that stuff?

Question about MSDN example

Mazdak21-Dec-02 5:11

Mazdak

21-Dec-02 5:11

I want to test one of M$ examples,"Starting an Interactive Client Process".At the begining of it,there is these lines:

#define DESKTOP_ALL (DESKTOP_READOBJECTS | DESKTOP_CREATEWINDOW | \ DESKTOP_CREATEMENU | DESKTOP_HOOKCONTROL | \ DESKTOP_JOURNALRECORD | DESKTOP_JOURNALPLAYBACK | \ DESKTOP_ENUMERATE | DESKTOP_WRITEOBJECTS | \ DESKTOP_SWITCHDESKTOP | STANDARD_RIGHTS_REQUIRED)

#define WINSTA_ALL (WINSTA_ENUMDESKTOPS | WINSTA_READATTRIBUTES |  \WINSTA_ACCESSCLIPBOARD | WINSTA_CREATEDESKTOP | \ WINSTA_WRITEATTRIBUTES | WINSTA_ACCESSGLOBALATOMS | \ WINSTA_EXITWINDOWS | WINSTA_ENUMERATE | \ WINSTA_READSCREEN | \ STANDARD_RIGHTS_REQUIRED)

Whenever it use DESKTOP_ALL and WINSTA_ALL,I got "C2017:illiegal escape sequence".I have to delete \ there to get rid of this error,Could anybody please tell me about this charachter here?

Mazy

"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits

Re: Question about MSDN example

Michael Dunn21-Dec-02 5:20

Michael Dunn

21-Dec-02 5:20

It looks like the original code was

#define DESKTOP_ALL (DESKTOP_READOBJECTS | DESKTOP_CREATEWINDOW | \ 
DESKTOP_CREATEMENU | DESKTOP_HOOKCONTROL | \ 
DESKTOP_JOURNALRECORD | DESKTOP_JOURNALPLAYBACK | \ 
DESKTOP_ENUMERATE | DESKTOP_WRITEOBJECTS | \ 
DESKTOP_SWITCHDESKTOP | STANDARD_RIGHTS_REQUIRED)

and got reformatted. Putting a backslash at the end of a line makes the preprocessor join that line and the next into one big line. You usually only see this with huge macros, like your examples.

--Mike--
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Re: Question about MSDN example

Mazdak21-Dec-02 6:51

Mazdak

21-Dec-02 6:51

Thanks Mike,So it doesn't mean anything special and when I delete them does not change th e meaning?

Mazy

"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits

Re: Question about MSDN example

Michael Dunn21-Dec-02 7:05

Michael Dunn

21-Dec-02 7:05

That's correct. Smile | :)

--Mike--
If it doesn't move and it should: WD-40. If it moves and it shouldn't: duct tape.

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Re: Question about MSDN example

carrie21-Dec-02 5:19

carrie

21-Dec-02 5:19

The \ character is usually used for putting newlines and tabs into strings (\n & \t), I can't see why they should be in those two #defines though but admittedly I've never had to use them.

Re: Question about MSDN example

Christian Graus21-Dec-02 10:12

Christian Graus

21-Dec-02 10:12

Like Mike said, if the last line of a macro is a \, then the macro spans the next line also Smile | :)

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

how is that possible ? no one can help me ?

Alex H 198321-Dec-02 3:40

Alex H 1983

21-Dec-02 3:40

if i Write a code that it Creats a CWnd Object in the main Window, how can i capture the mouse event in it ??? i know that this CWnd object has the Function onMouseMove or onLButtonDown or other Functions for Mouse Events but how can i trap them ???

when i move the mouse over that CWnd Object the Focus Set to this object.and in return the Mouse Event of the main window will lose. but it must be exist a way to capture the Events of the Focused window.

I am realy confused Confused | :confused:

Here is Code:
//When i Right Click CW Creats.
//CW is a Member Variable of the class

void CMyTestView::OnLButtonDown(UINT nFlags, CPoint point)
{
CW=new CWnd;
CW->Create(NULL, "",WS_VISIBLE|WS_CHILD|WS_CLIPSIBLINGS ,CRect(0, 0, 26,26), this, 0xffff);
}

Re: how is that possible ? no one can help me ?

Davide Pizzolato21-Dec-02 5:20

Davide Pizzolato

21-Dec-02 5:20

CWnd* p = GetParent();
if (p) p->SendMessage(...);

cout & printf

Sam Huang21-Dec-02 2:58

Sam Huang

21-Dec-02 2:58

When I use printf to display a double variable it gives a wrong result, but when I turn to use a cout to do the same thing it just did it right. For example:
...
double getValue()
{return value; // value is a double variable}
...
printf("%d\n", getValeue()); // gives a incorrect result
cout << getValue() << endl; // right
What are the differences between these two methods? Thanks!

Re: cout & printf

Tim Smith21-Dec-02 3:29

Tim Smith

21-Dec-02 3:29

What do you mean by incorrect?

How about an example of the output.

Tim Smith

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

Re: cout & printf

carrie21-Dec-02 3:35

carrie

21-Dec-02 3:35

The problem with the first one is that %d is for ints only, you should use something like %f. Or maybe thats just my hungover brain thinking poo again Smile | :)

Re: cout & printf

Tim Smith21-Dec-02 3:58

Tim Smith

21-Dec-02 3:58

LOL, silly me. I didn't notice that.

Tim Smith

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

Re: cout & printf

Michael Dunn21-Dec-02 5:18

Michael Dunn

21-Dec-02 5:18

%d is the format spec for integers. Use %lf for a double (think "long float").

--Mike--
If it doesn't move and it should: WD-40. If it moves and it shouldn't: duct tape.

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Re: cout & printf

l a u r e n22-Dec-02 4:48

l a u r e n

22-Dec-02 4:48

ummmmm
printf("%d",value);
is for integer values
try printf("%f",value);
for floats or doubles
Smile | :)

"traffic lights are for people who can't make their own decisions"
biz stuff about me

Re: cout & printf

Gary R. Wheeler22-Dec-02 5:21

Gary R. Wheeler

22-Dec-02 5:21

You are not using the correct format code in the printf. Try something like this:

double x = 123.456;
// ....
printf("This is x: %lf\n",x);

should print the following:

This is x: 123.456

Your original code used the %d format, which is used for int's.

Software Zen: delete this;

packaging a vc++ software

xxhimanshu21-Dec-02 1:37

xxhimanshu

21-Dec-02 1:37

hi all,

i am stuck.please help. my problem is I want to make a setup program for my vc++ application as we have in VB.can anyone help me out?

thanks in advance
regards

Himanshu

Re: packaging a vc++ software

David Salter21-Dec-02 2:19

David Salter

21-Dec-02 2:19

If you have VC7 Enterprise (not sure about other versions), you have a minimal version of Install Shield with it.

Otherwise you could look at Inno Setup (its free)

http://www.jrsoftware.org/isinfo.php[^]

Dave.

Re: packaging a vc++ software

User 665821-Dec-02 2:33

User 6658

21-Dec-02 2:33

I suggest you using NSIS, it is a great free installer. You can get it here

regards

modified 12-Sep-18 21:01pm.

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