Re: Check for a running process - C / C++ / MFC Discussion Boards

buy this book: Programming Windows with MFC 2n edition! Smile | :)

Hi,
We are using dao to connect to various typses of databases, access, oracle, and sql server. This way our clients can choose which one they want to use. We have just encountered a problem, where one of our clients tables has over 255 fields. They are using sql server. Sql Server allows you to create tables with up to 1000 fields, but using dao to access them will only allow you to create recordsets with up to 255 fields! I believe that I can't even select from TWO tables that will end up in a recordset with more than 255 fields. Does anyone have any ideas as to how to get around this problem? Confused | :confused:

Thank You

The problem lies deeper than DAO. The Jet database engine only supports 255 fields per table so you might be out of luck

Hi,

I would like to learn a bit more about programming and would like
to focus on client-server application.

Does anyone know about tips and pointers where I can learn more about
this. I would like to know what it takes to write an application like,
say ArcServe, with a set of services running on the server and a
desktop application on the client side.

Cheers.

--
Maxime Labelle
maxime.labelle@freesurf.fr

URGENT: Please let me know some way to convert my existing database from access97/98 to access 2k in
VC++ using DAO

Hi there, I'm making a typelibrary with ATL for visual basic users. Does anyone know how you can create a static function so that it appears in the <globals> section when i look at my library with the objectbrowser in VB ?

Hi,

Just a small query:
I want to check if a certain module (.exe, i know its path) is running ? (VC++)

Thanks a lot.

If you are writting the other module try creating named Mutex
// Create named mutex
hNamedMutex = CreateMutex(NULL, TRUE, "The Other App");
// Test if the programm is already running
if(GetLastError() == ERROR_ALREADY_EXISTS) {
// Do Somthing
}

If you don't ...
the you have two approaches one is to enumerate the windows by using The EnumWindows function which enumerates all top-level windows on the screen by passing the handle to each window, in turn, to an application-defined callback function. EnumWindows continues until the last top-level window is enumerated or the callback function returns FALSE

If you want to enumerate the processes.
Under Windows 95, you must use functions from the ToolHelp32 group of APIs. Under Windows NT, you use functions from PSAPI.DLL, which is available in the Platform SDK.

// Sample Code FOR NT

#include <windows.h>
#include <stdio.h>
#include "psapi.h"
#pragma comment (lib, "psapi.lib")

void PrintProcessNameAndID( DWORD processID )
{
char szProcessName[MAX_PATH] = "unknown";

// Get a handle to the process.

HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, processID );

// Get the process name.

if ( hProcess )
{
HMODULE hMod;
DWORD cbNeeded;

if ( EnumProcessModules( hProcess, &hMod, sizeof(hMod),
&cbNeeded) )
{
GetModuleBaseName( hProcess, hMod, szProcessName,
sizeof(szProcessName) );
}
}

// Print the process name and identifier.

printf( "%s (Process ID: %u)\n", szProcessName, processID );

CloseHandle( hProcess );
}

void main( )
{
// Get the list of process identifiers.

DWORD aProcesses[1024], cbNeeded, cProcesses;
unsigned int i;

if ( !EnumProcesses( aProcesses, sizeof(aProcesses), &cbNeeded ) )
return;

// Calculate how many process identifiers were returned.

cProcesses = cbNeeded / sizeof(DWORD);

// Print the name and process identifier for each process.

for ( i = 0; i < cProcesses; i++ )
PrintProcessNameAndID( aProcesses[i] );
}

Hope this helps

Cheers
G. ALfadhly

<marquee>
It is Illogical to define an inventor by his invention

Hi,

I am trying to Terminate a process under WINNT and i am facing problems in loading the psapi.lib file.

Can i get some help???

Looking forward for a solution..
Nayan Confused | :confused:

These PSAPI.lib, is distributed in the Microsoft® Platform Software Development Kit (SDK).
after installing PLatform SDK make suer you also set the envirnoment parameters such as path and other thingys (run the batch file)
For the SDK download
http://msdn.microsoft.com/library/psdk/portals/mainport.htm

Hope that will help

Cheers
Alfadhly

<marquee>
If I had a hammer

Hi,

Just a small query:
I want to check if a certain module (.exe, i know its path) is running ?

Thanks a lot.

is there a way to capture the menus that pop up when any button is clicked in the tool bar controls provided in IE? Confused | :confused:

Subir

PrintScreen doesn't work? Try HyperSnap... search www.download.com or www.tucows.com

...or maybe you mean something else besides screen capture?

hi yes i want all the info regarding the screen including the associated menus.
the problem is getting a handle to the individual menus.when i tried using GetMenu with the topmost window the return value is NULL.the problem is compounded by the fact that the structure MENUBARINFO is not recognised by my program.any pointers??
thanks

subir talukder

What is it you want?! Confused | :confused:

The screen capture! OR the CMenu return!?
Be exact please. Smile | :)

hi its the CMenu or rather the HMENU values that i want since i am using Platform SDK.

subir

for the SDK, use GetMenu() directly.
for the MFC, use a CMenu object and then the GetMenu() of that object.

Hello,
I guess the subject says most of what this is. I was using Delphi 5 and liked many of the components that have been made for it. I am wondering if there is any software or any way to convert Borland C+ Builder components or VCL to Visual Basic 6 or Visual Studio 6.

The main reason really is because I like the Coolform component which allows you to use an image like a skin almost. I have tried a couple skin type programs but I'm new to MVS and couldn't figure them out so this is why I am asking.

Any other help would be apreciated if you have a link or something.

Thanks

Chris Bunting

I have never seen any...

Everything is possible, but it's not easy to port Delphi Components to VC.

The Pascal to C++ process is not so bad, I have done it a couple of times Smile | :)

But Delphi uses VCL (Visual Component Library), and to easily port the components, you almost need to make a C++ VCL, not an easy task...

You can't use C++ Builder Components either, because they are also written in Pascal...

Good Luck, if you find a "Delphi Components to C++" anywhere, please let me know...

- Anders

You can't make them native components, but you could wrap the BCB component in an ActiveX wrapper. This would allow you to use the control in VB or VC. You would have to use Delphi's ActiveX tools though.

Hello. It's the first time i've made a program about hooks. So The program is very simple. I use a DLL. The keys pressed buy the user will be saved in a small Buffer till the user press ESC. Then the program should show the Buffer and stop.

Here is the DLL
_______________

#include <windows.h>
#include "Definiciones.h"

#pragma data_seg(".DATOS_COMPARTIDOS_DE_LA_DLL")
HHOOK hHookDLL = NULL;//

#pragma data_seg()

char Buffer[100] ="";
BOOL Bandera = FALSE;

BOOL WINAPI DllMain (HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpReserved)
{

switch(fdwReason)

{

case DLL_PROCESS_ATTACH:

if (lpReserved)
{

if ( hHookDLL ) // Si ya se consigió el handle, salir
return FALSE;

hHookDLL = SetWindowsHookEx( WH_KEYBOARD, (HOOKPROC)KeyboardProc, hInstDLL, GetWindowThreadProcessId(GetActiveWindow(),NULL));
}

return TRUE;

case DLL_THREAD_ATTACH:

return TRUE;

case DLL_THREAD_DETACH:

return TRUE;

case DLL_PROCESS_DETACH:

if ( hHookDLL )
{
UnhookWindowsHookEx( hHookDLL );
hHookDLL = NULL;

}

}

return TRUE;

}

LRESULT CALLBACK KeyboardProc(
int idHook, // hook code
WPARAM wParam, // virtual-key code
LPARAM lParam // keystroke-message information
)
{

if (idHook < 0)
{
return (CallNextHookEx(hHookDLL, idHook, wParam, lParam));
}

else
{

LRESULT r =CallNextHookEx(hHookDLL, idHook, wParam, lParam);

if ((wParam >= 48) && (GetKeyState(wParam) &0xF0))//
{
Bandera = TRUE;
if (strlen(Buffer) < 100)
{

Buffer[strlen(Buffer)]= (char) wParam;
Buffer[strlen(Buffer)+1] = 0;
}
}

if (wParam == VK_ESCAPE)
{
Bandera = TRUE;//<-----------THE PROGRAM SEEMS NOT TO
//<----------- CHECK THE NEW STATE
MessageBox(NULL,Buffer,"Pressed ESC",MB_OK);

}

return(r);
}
}

int RetornaBandera(void)//returns true or false that's all
{
return Bandera;
}

Here is the program which loads statically the DLL
__________________________________________________

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
while(!RetornaBandera())//An exported function from the DLL which SHOULD
//return ESC was pressed

return 0;
}

Raúl

Hello!
Now I'm working under some multimedia system and need to play one video file in several windows simultaneously. I tried to use MCI devices for realize it, but have some problems: I can't open MCI device as shareable, i.e. another attempt of opening second MCI device using the same file return error MCIERR_UNSUPPORTED_FUNCTION.
Can anybody explain to me where am I wrong?

Thanks in advance,
Yuri Spivak
Software Developer, Russia

Hello,
I am trying to create a com component in vc++ ATL using the import directive to create the conneciton and recordset objects.
After successfully creating and opening the connection and recordset. The recordset returns the recordcount != 0. There is a function in recordset which returns the whole recordset as string. It gives an exception which i am able to catch with "catch (...)" kind of catch block.
Can anyone specify what could be the problem as well as the solution for this kind of a problem.
OS-win98. database sql-7.0 vc++-6.0 atl-3.0 ado-1.5

Thanks in Advance
Regards
Alpesh Makwana

How change volume of sound and cursor in system (9x)

It is necessary to create CListCtrl so that the user could not change the size of columns. Flag LVS_NOCOLUMNHEADER cannot be used. Columns should have header.
Help me.