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/*
Not dialog based but you should get what your
looking for here.
*/
#include "stdafx.h"
#include <stdio.h>
typedef struct
{
int nKey;
int nSize;
} MY_STRUCTURE;
class CBar
{
public:
CBar::CBar() {}
CBar::~CBar() {}
void CBar::DoSomething(MY_STRUCTURE& myStructure)
{
// Modify the structure
myStructure.nKey=45;
myStructure.nSize=99;
}
};
class CFoo
{
public:
CFoo()
{
Start();
}
~CFoo() {}
void Start()
{
CBar bar;
MY_STRUCTURE someStructure={0};
printf("BEFORE: nKey = %d, nSize = %d\n",
someStructure.nKey,someStructure.nSize);
bar.DoSomething(someStructure);
printf("AFTER: nKey = %d, nSize = %d\n",
someStructure.nKey,someStructure.nSize);
}
};
int main(int argc, char* argv[])
{
CFoo foo;
return 0;
}
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hi,
Yes, i cought for this only and you have showed me path.
Thanks a Lot it exaclty what the problem i facing.
Uday kiran
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uday kiran janaswamy wrote: Note: this i am facing in vc++. i am having two dialog classes where i have to send this reference variable from first class member function to second Class member function.
But what is the problem!.. hang, value is not updated or something else!
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief
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hi all;
when i invoke the method below it delets all my objects from the list, can any one please tell me what i am doing wrong?
if there are 3 objects in the list and i am asking to delete the last one, it moves over all of the items but when it deletes the 3rd, it deletes them all..
thanks a lot,
Beri
bool cListAdv::remOneFromList ( long _unqAdvName )
{
if ( ListOfAdv.size() == 0 )
{
return false; // empty list
}
else
{
list<cAdv>::iterator iter ;
iter = ListOfAdv.begin() ; // set the iter to the begining of the list
while ( iter != ListOfAdv.end() ) // if it is not the end continue to check
{
cAdv tempAdv(*iter); // define a temporary adv and set it to the first object
//if (ListOfAdv.size() == 1 ) iter++; // change before deleting the same object - prevent mem error
iter++;
if ( tempAdv.getUnqAdvName() == _unqAdvName )
{
//ListOfAdv.remove( *iter ) ; // if they have the same AdvId remove - removes all objects from list
ListOfAdv.remove( tempAdv );
return true;
}
//++iter;
}
return false ; // not found
}
}
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does cAdv have an == operator ?
lst.remove(x) deletes items from lst which match the value 'x'.
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yes it does,
but it checks a different value;
can list.erase do the job instead?
May The Force Be With You...
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Is there a way to stop items in a list view report style from being sorted alphabetically when they are inserted using the Win32 API?
Thanks for your help!
--PerspX
"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates
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Don't specify the LVS_SORTASCENDING or LVS_SORTDESCENDING when creating the control?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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I havent done that.. I've just created the control with WS_VISIBLE, WS_CHILD and LVS_REPORT.. Then I've set the Extended style to LVS_EX_FULLROWSELECT
--PerspX
"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates
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Hmmm I can't reproduce that.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Did you make it or use of toolbox?
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What do you mean?
--PerspX
"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates
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I wanted to know it you used of ToolBox for insert control to form set sort property to false of property window.
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Thanks for your help everyone  But it was my fault and I've fixed the problem 
--PerspX
"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates
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If you said how did you solve it maybe helpful for people.
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It wasn't anything to do with the control, it was merely how I inserted the items
--PerspX
"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates
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Hi Guys
I am creating a mutex in one application and try to open in other application but it is not opening in other application
may i know what could be the reason
thanks in advance
RYK
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Can you post the code (for both apps) relating to opening the mutex?
On failure, what error code is GetLastError() returning?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Hi This is the code what i have used for creating mutex and opening mutex
SECURITY_ATTRIBUTES SecAtt;
SecAtt.nLength = sizeof(SECURITY_ATTRIBUTES);
SecAtt.bInheritHandle = true;
SecAtt.lpSecurityDescriptor = NULL;
m_hMutex = CreateMutex(&SecAtt ,FALSE,_T("Global\\DeviceFilterWriteNotification"));
in a Function the same application i have written some pice of code
::WaitForSingleObject(m_hMutex ,INFINITE);
// some percess is executing
if(ReleaseMutex(m_hMutex)) //allows ervice to access status file
WriteLog("Write Mutex Reset Successfully");
else
WriteLog("Failed to Release write Mutex");
in other application which is a service i am opening the Mutex by this way
HANDLE hWrite= OpenMutex(NULL,FALSE,_T("Global\\DeviceFilterWriteNotification"));
ReleaseMutex(hWrite);
Thanks in advance
RYK
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What happens if you specify access flags:
HANDLE hWrite= OpenMutex(MUTEX_ALL_ACCESS, FALSE, _T("Global\\DeviceFilterWriteNotification"));
If that fails, what is the error code?
Also, after OpenMutex(), the thread doesn't own the mutex so there's no need to release it.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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VC_RYK wrote: SecAtt.lpSecurityDescriptor = NULL
Try specifiying a security descriptor - use the same one in both your service and your application. If your service is running in the system account, the default security descriptor is NOT the same as the default for the application. This mismatch may be your problem.
Judy
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Hello everybody,
I am in the middle of a project that involves hooking the file/open save and browse for folder dialog boxes of he currently installed windows applications and manipulate them by sending windows message codes.
I am stuck with a problem in doing that.
I have been able to hook into the file/open save dialog boxes and manipulate them , when the applications (Notepad,Wordpad,Adobe Acrobat etc.) uses the windows common control dialogs (i.e Common Dialog Box Library).The window class type of these type of dialogs is #32770(Dialog).
But the microsoft office suite doesnot use this library to generate the file open / save dialogs. The class type for the
MS Office dialogs is "bosa_sdm_Microsoft Office * " , where the " * " stands for Word,Excel,Access etc.
The MSDN states that
The following are messages that a hook procedure can send to an Explorer-style Open or Save As dialog box.
CDM_GETFILEPATH
CDM_GETFOLDERIDLIST
CDM_GETFOLDERPATH
CDM_GETSPEC
CDM_HIDECONTROL
CDM_SETCONTROLTEXT
CDM_SETDEFEXT
But unfortunately sending these messages using
LRESULT SendMessage(
HWND hWnd, // handle to destination window
UINT Msg, // message
WPARAM wParam, // first message parameter
LPARAM lParam // second message parameter
);
won't do any good in case of Microsoft Office dialogs.
The MSDN also doesnot state what messages I can send to the office dialogs from the hook function to manipulate them or retrieve retrieve information regarding the current folder/file path within the office dialog.
So I am requesting everybody here to provide me the required guidance.
I will be greatful if you people can provide anything useful.
Thanks and regards,
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Microsoft applications, like all other applications, are not required to use the common dialogs.
Maybe they publish the information you need, but they're certainly not required to do so.
Good luck!
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Here are the basic steps as I understand them to "hook" a dialog in some application. I personally never use actual Windows Hooks, as from my limited experience, they are slow, with a lot of overhead, and complicated to discourage their use.
The three basic things needed are:
1) DLL injection
2) Windows Subclassing
3) Hooking the application import table.
The last item goes by different names and does not involve actual Windows Hooks.
Maybe you know some of this already:
First You need to inject your code into the process address space of the target application. This means putting it in a DLL and then calling some function InjectDLL(targ_hwnd,"mydll.dll"). There are numerous downloadable libaries for DLL injection. Do a search on CodeProject.
Then, within your DLLMain, presumably you'll do a search for the main window of the target application, using FindWindow, or whatever. At that point, you subclass that window with your own WndProc. You do this by calling SetWindowLong with the appropriate parameters. You also need to save the previous wndproc it returns so you can call it from your own. Your new wndproc is a message handler, looking at messages before the existing WndProc recieves them.
So your task is to hook into some dialog of this application. Presumably this dialog is activated from some menu item are tool bar button in the main window. Use SpyXX to find out the message being sent to the Main Window when this toolbar button or menu item is selected. Then you will intercept that message in your new WndProc. When you receive that message all you will do is set some Boolean, say bFindFileDlg to TRUE.
That brings us to the next step - hooking the application import table. If you can figure out how to get the Window Handle of the dialog through some message sent to the main window, then this step isn't necessary. All you need is the dialog hwnd so you can subclass it, just like you subclassed the main window procedure. But if there is no such message, then you need to find this dialog hwnd by intercepting the Win32 calls that are made it initialize any dialog.
For examples, you could replace SetDlgItemText (likely to be called in any dialog box init), with your own version, which could go like this:
WINUSERAPI BOOL WINAPI r_SetDlgItemTextA(HWND a,int b,LPCSTR c) {
if (bFindFileDlg) {
char txt[80];
GetWindowText(a, txt, 80};
if !strcmp(txt,"File Open") {
SetProp(a,"PrevWndProc",(HANDLE)
(WNDPROC)SetWindowLong(a, GWL_WNDPROC, (LONG)MyDlgProc));
bFindFileDlg = FALSE;
}
return SetDlgItemTextA( a, b, c);
}
Now you need to inject the function above in the slot of the app's import table for SetDlgITemTextA. Again there are many libraries to do this.
For example, there is HookImportFunctionByName. However, note that this function only hooks the import table of one specific exe or dll you specify. What you want is a recursive version that replaces the entry for every DLL loaded by the application. In all liklihood, the main exe isn't making the call to SetDLgItemText directly, but rather throught some dll (e.g. MFC).
I had to write my own recursive version of HookImportFunctionByName but undoubtedly there's something out there already written that does it for you.
To know what win32 calls are being made, it helps to have a debug version of it, or write your own, hooking every single win32 call.
There's probably a half dozen other crucial issues to be aware of, but I guess you'll have to find those out for yourself. Well, one other thing. In your subclassed WndProc, make sure to restore the original WndProc in the WM_DESTROY message.
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FWIW, its not only win32 functions that can be hooked. If you know MFC calls, and their parameters, you can hook the import table for them in the same way. Also, the executable format is the same for all windows binaries, regardless if they're .NET, managed, or whatever - at least that's my understanding. Everything is just a wrapper for the win32/platformsdk.
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