Re: problem with EnumDisplayDevices(..) - C / C++ / MFC Discussion Boards

Anonymous18-Jun-03 2:03

18-Jun-03 2:03

hii,
for any call of this function EnumDisplayDevices(..) , It generate error when compilation , "undeclared identifier" without any acceptable reason !!

any one can help of that ,
- I made all needed includes ! ,

hatem

Re: problem with EnumDisplayDevices(..)

Anonymous18-Jun-03 4:18

Anonymous

18-Jun-03 4:18

thank u ,
but I do so , but nothing changed !! , still "undeclared identifier" !!!

I really don't know why !!!

hatem

Re: problem with EnumDisplayDevices(..)

Anonymous18-Jun-03 4:51

Anonymous

18-Jun-03 4:51

there is ,
in customize ..

user32.lib /nologo /subsystem:windows /incremental:yes /pdb:"Debug/test005.pdb" /debug /machine:I386 /out:"Debug/test005.exe" /pdbtype:sept

Re: problem with EnumDisplayDevices(..)

Ryan Binns18-Jun-03 15:31

Ryan Binns

18-Jun-03 15:31

#include <multimon.h>

In one (and only one) file that includes this file, include this line before the #include line:

#define COMPILE_MULTIMON_STUBS

This will enable the use of the multi-monitor functions on any platform (even though Win95 does not support multiple monitors) and degrade gracefully if they are not supported.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Re: problem with EnumDisplayDevices(..)

Hatem Darweesh18-Jun-03 20:56

Hatem Darweesh

18-Jun-03 20:56

thank you.. .. but
Frown | :(

nothing changed ! , still "undeclared indentifier"

with ..

#include <windows.h>
#include <multimon.h>

#define COMPILE_MULTIMON_STUBS

void main()
{
DISPLAY_DEVICE dd;
EnumDisplayDevices(0, 0, &dd, 0);
}

and , "unresolved external symbol __imp__EnumDisplayDevicesA@16"

with ..
#define WINVER 0x0500
#include <windows.h>
#include <multimon.h>

#define COMPILE_MULTIMON_STUBS

void main()
{
DISPLAY_DEVICE dd;
EnumDisplayDevices(0, 0, &dd, 0);
}

and if I repaced the windows.h & multimon.h it make 29 error !!!

I eally disappointed !!

Re: problem with EnumDisplayDevices(..)

Ryan Binns18-Jun-03 21:06

Ryan Binns

18-Jun-03 21:06

I said to place the #define COMPILE_MULTIMON_STUBS line BEFORE the #include <multimon.h> line, not after.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Re: problem with EnumDisplayDevices(..)

Hatem Darweesh18-Jun-03 21:18

Hatem Darweesh

18-Jun-03 21:18

I did , nothing happened !!
the same error ,

I want to tell u that I seached in User32.lib , I find all enum function , but EnumDisplayDevices does not exit at all !!! ,

I MSDN they say that this function exists in User32.LIB !! ,

I wonder if there is another function , instead of this unexist one !!

hatem

Re: problem with EnumDisplayDevices(..)

Ryan Binns18-Jun-03 21:33

Ryan Binns

18-Jun-03 21:33

The code that you posted has the #define line after the #include line, so I assumed that this was the code you were testing.

The function works perfectly. I have used it plenty of times before. Try this:

#include <windows.h>
#define COMPILE_MULTIMON_STUBS
#include <multimon.h>

int WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR lpCmdLine, int nCmdShow)
{
    DISPLAY_DEVICE dd;
    dd.cb = sizeof(DISPLAY_DEVICE);
    for(int i=0; EnumDisplayDevices(NULL, i, &dd, 0); i++)
    {
        // Do whatever with the data here
    }
    return 0;
}

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Re: problem with EnumDisplayDevices(..)

Hatem Darweesh18-Jun-03 22:02

Hatem Darweesh

18-Jun-03 22:02

sorry ,
but I tryed your code , and the same problem occures , !! , I think it may be the problem of Windows2000 , or some thing wrong with my VC++ !! ,

hatem

Re: problem with EnumDisplayDevices(..)

Anonymous18-Jun-03 22:09

Anonymous

18-Jun-03 22:09

please could u send me a sample application , that this function is work in it ,

my mail is , hatem_poet@menanet.net

Re: problem with EnumDisplayDevices(..)

Ryan Binns18-Jun-03 22:21

Ryan Binns

18-Jun-03 22:21

There's something wrong with what you're doing. I compiled exactly the code that I posted before, and it compiled with only one warning, which could be safely ignored.

Sorry, I can't help any more than this. I don't know what you're doing wrong. You'll have to sort it out there.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

use of CFrameWnd

gucy18-Jun-03 0:40

gucy

18-Jun-03 0:40

i want to show a CFrameWnd window responding to a buttonclicked event in a dialog based application .the application has no doc template. and i have some problem to realize that.
the following are my codes:

CMainFrame myframe;
myframe.LoadFrame(.....);
myframe.CreateView(....);
myFrame.ShowWindow(...);

if you have any experience on that,pls tell whether i can do like that.
perhaps i have made some ridiculous mistake...

gucy

LogonUser without Password

isriniv18-Jun-03 0:22

isriniv

18-Jun-03 0:22

Hi,

Can I use LogonUser w/o knowing a particular users' password?

Regards
Srinivas

Re: LogonUser without Password

geo_m18-Jun-03 0:45

geo_m

18-Jun-03 0:45

no and yes.
For 'normal' programming it is quite impossible.

Only way that is possible is to provide a subauthentication dll to the LSA, that will take any or none password as valid.
But you must install such a dll to the system locally under administration rights and it should also work only for local accounts.

Re: LogonUser without Password

AlexO18-Jun-03 3:58

AlexO

18-Jun-03 3:58

No, unless you can hack it.

One Form of Data Transfer to other Form

Anonymous18-Jun-03 0:21

Anonymous

18-Jun-03 0:21

Hi,EveryOne
I want one formview(MDI) of data can transfer to other formview(which also A MDI). One formview I am using listbox and othe formview i am using editbox.

Thanxs

Dialog box questions

pani6817-Jun-03 23:53

pani68

17-Jun-03 23:53

I have few edit boxes (for double prec. numbers)in a dialog (in a dialog based MFC program).
I want to go to the next edit box when I press ENTER. Normally the control goes to OnOk and the program exits.
Similarly I want to reset (to blank) all the data in the edit boxes when I press ESCAPE. But the program closes when I do so.

Will someone help?

Re: Dialog box questions

skaanji18-Jun-03 0:27

skaanji

18-Jun-03 0:27

override OnCancel() and OnOk() functions in your dialog message map
so you can write your own code for these keys

Re: Dialog box questions

Ryan Binns18-Jun-03 4:01

Ryan Binns

18-Jun-03 4:01

This question was asked a few days ago... Override PreTranslateMessage() like this:

BOOL CMyDialog::PreTranslateMessage(MSG *pMsg)
{
    if((pMsg->message == WM_KEYDOWN) && (pMsg->wParam == VK_RETURN))
        pMsg->wParam = VK_TAB;
    return CDialog::PreTranslateMessage(pMsg);
}

This should work as required.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

how do i convert a string to LPCSTR?

Member 40481317-Jun-03 23:33

Member 404813

17-Jun-03 23:33

as title

Re: how do i convert a string to LPCSTR?

Anonymous18-Jun-03 1:55

Anonymous

18-Jun-03 1:55

string? -> std::string?

std::string str = "burp";

USES_CONVERSION;

LPCSTR lpcstr = T2A(str.c_str());

Re: how do i convert a string to LPCSTR?

Ryan Binns18-Jun-03 4:14

Ryan Binns

18-Jun-03 4:14

1. To convert a CString to a LPCSTR

#include <atlconv.h>

USES_CONVERSION;
CString str = _T("Whatever");
LPCSTR lpsz = T2CA(str);

2. To convert a std::string to a LPCSTR

std::string str("Whatever");
LPCSTR lpsz = str.c_str(); // No T2CA() required - std::string is always ANSI

3. To convert a std::wstring to a LPCSTR

#include <atlconv.h>

USES_CONVERSION;
std::wstring(L"Whatever");
LPCSTR lpsz = W2CA(str);

Hope this helps

Have a look at the tutorial on string handling on CP. That will say more Smile | :)

editing mpeg 1 question

Emiliano17-Jun-03 23:29

Emiliano

17-Jun-03 23:29

Hello every one, I was wondering if any body knows a way to trim mpeg 1 file with out corrapting it? or of an API/SDK that i could use to achive this.

Any help would be great !!

Activex control in .NET Form (VS.NET 2003)

Uma Mahes17-Jun-03 23:07

Uma Mahes

17-Jun-03 23:07

I am Using VS.NET 2003. I tried dragging Activex controls
from toolbar to the form.

It does the following things
1. Creating tlbimp wrapper file and it is sucess.
2. Creating Aximp wrapper file and it does something after
that it poppedup "File or assemblyname Axinterop.ID.dll or one of the depencies was not found". (Note:ID is activex name)

I tried even with command prompt
1. tlbimp abc.ocx /out:interop.abc.dll and it created sucessfully
2. aximp abc.ocx /out:axinterop.abc.dll /rcw:interop.abc.dll /rcw:interop.stdole.dll
AxImp Error: File or assembly name stdole, or one of its dependencies, was not found.

Can any body faced this type of problem?
(Note: Even Microsoft activex control also giving the same problem? Smile | :)

)

Please tell me some method to use Activex control in .NET

Thanks,
Uma Mahes

CEdit Control

Anonymous17-Jun-03 22:50

Anonymous

17-Jun-03 22:50

hey.. really need a solution to my problem

when i set text to an edit box.. using funcion like SetDlgItemText or SetWindowText... is there any way i could know if the edit box is completly filled with the text or not.. edit box is multiline but with no scollbar option...

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