Re: Mutex problem - C / C++ / MFC Discussion Boards

valikac23-Oct-02 18:02

23-Oct-02 18:02

Okay.

You cannot programmably uninstall an application if it was installed using some other vendor's installer such as InstallShield. One reason is you would have to read and understand InstallShield's logfile.

Another solution is if the registry key list some uninstall executable line "unwise.exe," then you can execute that file.

HINSTANCE ShellExecute(HWND hwnd, LPCTSTR lpOperation, LPCTSTR lpFile, LPCTSTR lpParameters, LPCTSTR lpDirectory, INT nShowCmd)

UINT WinExec(LPCSTR lpCmdLine, UINT uCmdShow)

Kuphryn

Re: run a perticuler registry key ?

Todd Smith23-Oct-02 18:12

Todd Smith

23-Oct-02 18:12

Or CreateProcess()

Todd Smith

Mutex problem

Abin23-Oct-02 15:54

Abin

23-Oct-02 15:54

I'm working on a program which is not allowed to be run more than once in same directory, but is allowed to be run as many times as users want if the programs are located in diffrent directory. For example, suppose my program is named "abc.exe":

run c:\path1\abc.exe -> OK
run c:\path1\abc.exe -> Not OK

However:

run c:\path1\abc.exe -> OK
run c:\path2\abc.exe -> OK
run c:\path3\abc.exe -> OK

I wish I explained clear enoguh in above scenario. Now, to accomplish this, I thought using mutex should be good, this is how I did:

In beginning of the program I use GetModuleFileName to obtain application path and store it in a string, say g_szAppPath, and I use this string to create MUTEX object. Hmm, I thought it should work since g_szAppPath would only be different if the programs are located in different directory, is it not? But somehow this method does not work, I can always run the program multiple times in same directory.

What am I doing wrong? Is there a good way to get what I want? Thanks guys.

Re: Mutex problem

l a u r e n23-Oct-02 17:08

l a u r e n

23-Oct-02 17:08

errrrrr
getcurrentdirectory() ?

"even if my world is weird it's my world"
biz stuff about me

Re: Mutex problem

includeh1024-Oct-02 6:51

includeh10

24-Oct-02 6:51

it is very easy, save running exes in a file or register, check before a new exe runs.

includeh10

Re: Mutex problem

Alvaro Mendez24-Oct-02 9:13

Alvaro Mendez

24-Oct-02 9:13

This is what I would try:

// Get the app's full path
CString strFile;
::GetModuleFileName(NULL, strFile.GetBuffer(MAX_PATH), MAX_PATH);
strFile.ReleaseBuffer();
 
// Create a temporary mutex to check if it's already running
CMutex(FALSE, strFile);
if (::GetLastError() == ERROR_ALREADY_EXISTS)
    return FALSE;  // already running in the same folder
 
// Create a static mutex to prevent others from running
static CMutex mutex(FALSE, strFile);

[edit]Put this in your InitInstance and try it.[/edit]

Regards,
Alvaro

There is much pleasure to be gained from useless knowledge. - Bertrand Russell

Re: Mutex problem

Abin24-Oct-02 9:38

Abin

24-Oct-02 9:38

Thank you. I tried but got runtime error as shown below:

--------------------------------------------
Microsoft Visual C++ runtime library error:

Program: c:\blahblah\blah.exe

Abnormal program termination.
---------------------------------------------

Don't know what's wrong...

Re: Mutex problem

Alvaro Mendez24-Oct-02 9:56

Alvaro Mendez

24-Oct-02 9:56

Yep, I tried it and it blew up on me too. For some reason it didn't like the name of the mutex (with the backslashes). I replaced the backslashes with regular slashes and it works like a champ. I also changed to code to be a little simpler:

// Get the app's full path, but with regular slashes
CString strMutex;
::GetModuleFileName(NULL, strMutex.GetBuffer(MAX_PATH), MAX_PATH);
strMutex.ReleaseBuffer();
strMutex.Replace('\\', '/');

// Create a temporary mutex to check if it's already running
static CMutex mutex(FALSE, strMutex);
if (::GetLastError() == ERROR_ALREADY_EXISTS)
    return FALSE;  // already running in the same folder

Regards,
Alvaro

There is much pleasure to be gained from useless knowledge. - Bertrand Russell

Re: Mutex problem

Abin24-Oct-02 10:07

Abin

24-Oct-02 10:07

YES man! Finally!

OK it works perfectly now, so the real trick is that we cannot have back-slashes in a mutex name, damn it, where in MSDN said that?

Thank you a lot.

Bin

is there any change in logic ?

imran_rafique23-Oct-02 15:47

imran_rafique

23-Oct-02 15:47

i saved lparam and wparam values when a key
(say U)pressed on a perticuler edit box.
i want to use these values of lparam and wparam again on different edit box.in order to see that key
(say U) .
is that code is correct or not for that purpose?
is there any change in logic if yes then plz tell?

LPEVENTMSG lpEvent= (LPEVENTMSG)lParam;
PostMessage(different_hWnd,
lpEvent->message,wParam,lParam);

r00d0034@yahoo.com

Re: is there any change in logic ?

valikac23-Oct-02 17:37

valikac

23-Oct-02 17:37

Where does the second editbox reside?

Kuphryn

Re: is there any change in logic ?

imran_rafique24-Oct-02 15:15

imran_rafique

24-Oct-02 15:15

infect second edit box reside on different procss

r00d0034@yahoo.com

Re: is there any change in logic ?

valikac24-Oct-02 15:50

valikac

24-Oct-02 15:50

Assuming you design and implement both processes, the simplest solution to sending the data between the two edit boxes is file mapping and named object.

I am not familiar with the code you posted.

Kuphryn

how to make?

imran_rafique23-Oct-02 15:15

imran_rafique

23-Oct-02 15:15

how to make lparam and wparam of a kewdown message so that i can put into postmessage with an hwnd of edit box in order to see a perticuler key pressed into an edit box?

r00d0034@yahoo.com

Re: how to make?

Christian Graus23-Oct-02 16:28

Christian Graus

23-Oct-02 16:28

You've been asking this question for days. Have you written any code in that time ? What is not working ?

Christian

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

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

During last 10 years, with invention of VB and similar programming environments, every ill-educated moron became able to develop software. - Alex E. - 12-Sept-2002

Re: how to make?

imran_rafique23-Oct-02 16:47

imran_rafique

23-Oct-02 16:47

yes i have developed an applecation which can install any type of software with out any user interaction on the network i have used (vb.net,csharp,vc.net).
for that purpose i have recorded events and stroed it into a file and with the help of threading i have replay it. it work nicesly but only for mouse events it works.
but it dont work for keboard events.
i dont know why thats why i am asking this question again and again plz help me.
plzzzzzzzzz

r00d0034@yahoo.com

Re: how to make?

Christian Graus23-Oct-02 17:00

Christian Graus

23-Oct-02 17:00

What I'm asking is if you've tried anything to make it work, and if so, what ? You see, the more info you provide, the easier it is to help you, and it gives the impression you're doing more than just asking over and over again.

Christian

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

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

During last 10 years, with invention of VB and similar programming environments, every ill-educated moron became able to develop software. - Alex E. - 12-Sept-2002

Re: how to make?

imran_rafique23-Oct-02 17:34

imran_rafique

23-Oct-02 17:34

i am giving you some part of my code so that you could help.
plz see it.
if part works but else dont (which is my problem).

if(E_to_Match->message==WM_LBUTTONUP){
   ::SetCursorPos(fp.x,fp.y);
PostMessage(h,WM_LBUTTONDOWN,0/*E_to_Match->wParam*/,0);
PostMessage(h,WM_LBUTTONDOWN,0/*E_to_Match->wParam*/,0);
::Sleep(500);
PostMessage(h,E_to_Match->message,0/*E_to_Match->wParam*/,0);
   }else
	{
         ::Sleep(2000);
	PostMessage(h,E_to_Match->message,(WPARAM)E_to_Match->wParam,(LPARAM)E_to_Match->lParam);
	}

only else part dont work here.
Control tranfer here only when a keydown and keyup message appear

before that i store E_to_Match object and set its values
in a CALLBACK function

LRESULT CALLBACK JournalRecorderFunc(int nCode, WPARAM wParam, LPARAM lParam)
        {
        ...
        ...
        E_to_Match->Class_name=c_n;
	E_to_Match->W_text=wn;
        E_to_Match->wParam=(Int32)wParam;
	E_to_Match->f_point_x=f_point.x;
	E_to_Match->f_point_y=f_point.y;
	E_to_Match->lParam=(Int32)lParam;
	E_to_Match->C_pt_x=C_pt.x;
	E_to_Match->C_pt_y=C_pt.y;
	E_to_Match->w_Level=w_Level;
        LPEVENTMSG lpEvent2=(LPEVENTMSG)lParam;
	Current_event->message=lpEvent2->message;
        ....
        ....
}

plz reply whats the problem with else part?
what to do because in else part hwnd is correct but dont displa key that is pressed.
it perform both keydown and keyup messages.
when i placed following line of code it display 777 in edit box.
i dont know why.

PostMessage(h,E_to_Match->message,103,
(LPARAM)E_to_Match->lParam);

i am waiting for ur reply

r00d0034@yahoo.com

Re: how to make?

Christian Graus23-Oct-02 17:54

Christian Graus

23-Oct-02 17:54

Have you traced through the code and verified that exactly the same PostMessage is occuring in both instances, with all parameters the same values ?

Christian

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

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

During last 10 years, with invention of VB and similar programming environments, every ill-educated moron became able to develop software. - Alex E. - 12-Sept-2002

Re: how to make?

imran_rafique24-Oct-02 16:31

imran_rafique

24-Oct-02 16:31

yes i have checked that whan key board event have to execute only then else part executed hwnd is also correct
because when i put that line in else part it will dispaly 777 in edit box

PostMessage(hWnd,
lpEvent->message,103,lParam);

r00d0034@yahoo.com

Small icon vs Large icon

Paul Oss23-Oct-02 12:49

Paul Oss

23-Oct-02 12:49

I'm using Chris Maunder's excellent CSystemTray class and I'm having some odd behavior that has to do with icon size. I don't believe that this has anything to do with Chris' class, but I thought I'd throw that in. What I'm finding is that the tray icon that's being inserted is the icon for my application, but an interpolated version of the large icon, not the real 16 x 16 icon. I've messed with SetIcon(icon,TRUE/FALSE) before inserting the icon in the tray to no avail. What's the proper procedure for guaranteeing the proper icon displays.

Paul Oss

Re: Small icon vs Large icon

Paul M Watt23-Oct-02 13:18

Paul M Watt

23-Oct-02 13:18

Have you tried explicitly loading the 16x16 version of your icon, then setting this into the tray class?

I have run into this problem before, when just dealing with the shell tray directly.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: Small icon vs Large icon

Paul Oss23-Oct-02 16:45

Paul Oss

23-Oct-02 16:45

I have not. I guess I'm ignorant as to how to do that. I know how to load the icon (as resource) and then set the 16 x 16 through the SetIcon(xxx,BOOL) api (but that's not working for me). How do I explicitly load the 16 x 16 icon?

Paul Oss

Re: Small icon vs Large icon

Paul M Watt23-Oct-02 18:34

Paul M Watt

23-Oct-02 18:34

You need to use the ::LoadImage API function, and specify the size for the icon, 16 x 16. Also, for the tray with anything below Win2000 and win9x you can only use the VGA palette for systray icons.

Good Luck

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: Small icon vs Large icon

Michael Dunn23-Oct-02 13:30

Michael Dunn

23-Oct-02 13:30

Be sure you use LoadImage() to load a 16x16 icon. LoadIcon() only loads 32x32 (the AppWizard generated code does this, but it's buggy).

--Mike--
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