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Re: AfxResourceHandle is NULL

Michael Dunn29-Nov-01 7:00

Michael Dunn

29-Nov-01 7:00

Look up the AFX_MANAGE_STATE() macro in MSDN. You need to add this to the beginning of every COM method and exported function.

--Mike--
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While I can't be correct on all matters, I can make the reassuring claim that where I am inaccurate, I am at least definitively inaccurate.
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Re: AfxResourceHandle is NULL

Bill Wilson29-Nov-01 8:30

Bill Wilson

29-Nov-01 8:30

Thanks a bunch. That seems to fix it Big Grin | :-D

Thanks for the help,
Bill

Re: AfxResourceHandle is NULL OOPS not fixed after all

Bill Wilson29-Nov-01 10:11

Bill Wilson

29-Nov-01 10:11

OOPS, thought that fixed it, instead I also eliminated the error condition, causing it to not use the global. Now when I force a file error, I get the same condition. Here's the code I used:

STDMETHODIMP CFunction::Execute(BSTR bstrRequest, long lRowID, long *lRetVal)
{
	 ASSERT(afxCurrentResourceHandle != NULL);
	 AFX_MANAGE_STATE(AfxGetStaticModuleState( ));
	 ASSERT(afxCurrentResourceHandle != NULL);

Both asserts fire! I think there must something wrong with the initialization.

I also placed an assert in _twinmain before any of MY code is encountered (up 'til now its all wizardry!)

if (bRun)
 {
     ASSERT(afxCurrentResourceHandle != NULL);

This one fires also.

What is wrong? Every thing else is standard ATL .exe project.

Thanks for the help,
Bill

Numbering edit control

28-Nov-01 20:36

Hello I try find a solution Confused | :confused:

to show the linenumber in a edit control. But trying to get all the handles
- cursor movement
- scolling up/down
- moving the scoll-Slider ...
seems to be hard stuff Dead | X|

.
Looking at 4GLs I saw something like 'synchronize scrolling', so that I can place a widget close to the edit control, just showing linenumbers 1,2,3,.. . Scrolling in one widget will scroll the other.
Any idea to solve this problem Big Grin | :-D

?

Hansgeorg

Network problems in Win2000

v_krishnan28-Nov-01 20:06

v_krishnan

28-Nov-01 20:06

Hi,

I have installed Windows 2000 Professional on my machine and now I am facing a very strange problem. I am not able to run my applications that use windows sockets to connect/listen to connections from other machines. I am able to make atmost 2-3 connections only at a single time. I am also unable to browse the network from windows explorer when some connections are already made. The error that I receive is 'Insufficent quota of resources exist'. Can anyone tell me what the problem is and how to solve it?

Thanks,
Krishnan

Re: Network problems in Win2000

Chambers29-Nov-01 9:37

Chambers

29-Nov-01 9:37

I can`t tell you what the problem is, only that I know a good few people who have experienced terrible trouble getting win2k to network properly, particularly when other OS's are connected. There is a non-descript delay in connecting the network upon startup, amongst other reports of high latency and failure to browse whole sections of the network. My advice is to try using a different OS, I`m using Win XP RC1 (I have RC2, but can`t be bothered to re-install it for such a minor upgrade in performance), and it is sh**loads better than win2k in my opinion, networking is a dream. If you really want it to run on win2k I think you`ll be in it for the long haul (but maybe I`m wrong!).

Alan.

"When I left you I was but the learner, now I am the Master" - Darth Vader Mad | :mad:

Get Audio timecode and play wav directly

chen28-Nov-01 19:50

chen

28-Nov-01 19:50

Hi,

I want to play audio from a Sony Digital Videocassette Recorder
DVR-28(D2).
In VC++ dialog window, i only need to set the play, pause, stop
and continue button. In addtion, i need get the timecode
of the audio(hh, mm, ss, ff) and display it in the dialog window. I really want to how how to apply the Api functions to do this,
and how to get the time code?
Any points are appropriate.

Thanks in advance!

chen

XP themes

28-Nov-01 19:46

Hi all,

I am trying to update my custom controls to get the XP look and feel. The rendering of the controls using the XP themes API is not a problem but trying to determine when to use XP themes and when not is. I have created two test apps, one with a manifest and one without. When I use the IsAppThemed() API I get FALSE on the app with the manifest (visual styles enabled) and TRUE with the app without the manifest (no visual styles enabled) which strikes me as odd.

My question is how do I determine when I should render using visual styles and when not. Perhaps the anwser is simple but somehow I can't seem to find out what it is Frown | :(

Thanks in advance,
Jan

displaying tooltips

28-Nov-01 18:28

i strictly need to use the below code to include my toolbar in my mainframe

if (!m_wndToolBar.Create(this) ||
!m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
{
TRACE0("Failed to create toolbar\n");
return -1; // fail to create
}

m_wndToolBar.ModifyStyle(0, TBSTYLE_FLAT);

i found tat the tooltips will not be displayed. how do i go about to enable my tooltips to be displayed

Do i actually need a DocTemplate?

foobat28-Nov-01 17:32

foobat

28-Nov-01 17:32

I am making an SDI app that has different views and splitters.

The views are created and replaced dynamically so do i actually need to have a DocTemplate?

I want to be able to cycle through my documents available views by using GetFirstView() etc but manually attaching the views to the doc using AddView should work just as well i think.

hmm.. i think i was just thinking out loud then..

I think my main question is, are doc templates only useful for vanilla doc/view apps (ie word) where the doc is pretty much a virtual document and the views are interfaces to it as opposed to apps that may use the doc/view architecture for slight data/presentation seperation.

wow that was a long sentence, yeah i think i'm rambling a bit Smile | :)

apologies for all the questions, im just trying to see how other people do things so i can find the best ways Smile | :)

ash

Re: Do i actually need a DocTemplate?

Chambers29-Nov-01 8:28

Chambers

29-Nov-01 8:28

I use document templates as I think they make the document/view architecture quite nice and simple to use. They also tidy up a lot of the pointer creation stuff so that you don`t have to worry about that, which is nice. I personally would use one, but then again my applications tend to be MDI, not SDI, so you may prefer not to (I would, even still). Hope this helps make your mind up.

Alan.

"When I left you I was but the learner, now I am the Master" - Darth Vader Mad | :mad:

Has anyone had DevStudio lock up when stepping but not when running a prog?

foobat28-Nov-01 16:37

foobat

28-Nov-01 16:37

I am trying to debug an SDI app i am currently deveoping but DevStudio keeps locking up in a certain section of code so its nearly impossible.

When i step thru the code it locks inside one of my funcs that reads data from a socket. This has a large loop in it so i cant really step thru it fully but if i try to run to cursor at the end of the loop it just hangs the app and devstudio with it Frown | :(

The main thing that is frustrating me is that if i just run the prog in debug mode it runs ok. I am actually trying to debug another prob altogether but am finding it very difficult.

Has anyone else come across a prob like this before? Its making me crazy! Dead | X|

Re: Has anyone had DevStudio lock up when stepping but not when running a prog?

Mike Nordell28-Nov-01 16:53

Mike Nordell

28-Nov-01 16:53

My first guess is memory overrun. Check that first. Make sure there are no memory overruns, including writing into stack objects and so on. If it still messes up, post code.

Re: Has anyone had DevStudio lock up when stepping but not when running a prog?

foobat28-Nov-01 17:05

foobat

28-Nov-01 17:05

Yeah that sounds like it could be a possibility.

I'm also getting a

DeferWindowPos failed : low memory resources.

which points to possibly the same thing. I'll check it out

Re: Try to use TRACE macro

Masaaki Onishi28-Nov-01 17:21

Masaaki Onishi

28-Nov-01 17:21

Hello, the codegurus around the world.;)

When you try to debug the code related to Socket with Timer or Thread,
debugging this code is almost diffcult.

In this case, I often insert TRACE macro with the key string.
As a result, I can trace the complicated process with Timer or Thread.
TRACE shows the strings in Output window. Cool | :cool:

Please, don't send me your email about your questions directly.
Have a nice day!
Sonork - 100.10571:vcdeveloper Wink | ;)

-Masaaki Onishi-

Re: Try to use TRACE macro

foobat28-Nov-01 17:37

foobat

28-Nov-01 17:37

hehe, i tried that but unfortunately i am using nulls to seperate the various sections of the message im trying to receive which is terminated with double nulls.

because of this trace will only read up to the first null and output that.. aiiiee!! Smile | :)

And i would like to read blocks of bytes in at a time but because i have to watch for double nulls i can only read a byte at a time.. Anyone else know of a better technique?

thanks for the replies

ash

PS i am using nulls because thats the way the server was designed by someone else and i guess it seemed like a good idea at the time

Colour to Grayscale

PJ Arends28-Nov-01 15:53

PJ Arends

28-Nov-01 15:53

I am currently using this algorithm to convert a small image on a button from colour to grayscale:

COLORREF background = ::GetSysColor(COLOR_3DFACE);
for(int x = 0; x < width; x++)
    for(int y = 0; y < height; y++)
    {
        COLORREF clr = DC.GetPixel(x, y);
        if (clr != background)
        {
            int grayscale = (((GetBValue(clr) * 11) + (GetGValue(clr) * 59) + (GetRValue(clr) * 30)) / 100);
            DC.SetPixelV(x, y, RGB(grayscale, grayscale, grayscale));
        }
    }

Does anyone know of a better algorithm Confused | :confused:

---
It may be that your sole purpose in life is simply to serve as a warning to others.

Re: Colour to Grayscale

Christian Graus28-Nov-01 16:33

Christian Graus

28-Nov-01 16:33

The scales of red/green/blue look right, but you'd do better to use a DIBSectio, and avoid the speed issue of Get/SetPixel, as well as not needing to select it into a DC.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

Re: Colour to Grayscale

Mike Nordell28-Nov-01 17:04

Mike Nordell

28-Nov-01 17:04

Does anyone know of a better algorithm

You might want to have a look at the Color space FAQ.

A Google search for "color space RGB" (and other suitable restriction words) should display more than enough. It's a large area...

Opening Read-Only Access Files in Code

John Clump28-Nov-01 14:42

John Clump

28-Nov-01 14:42

Hi everyone. Does anyone know if it is possible to open a read-only Jet (Access) database in code. I know MS Access will allow you to open a read only database, and just warn you when you open it that it is read only and you can't change the database. I recently tried to open a read-only DB in code, and all I did was attempt to open it, open a table and read out some records. It seems to fail when it tried to open the table (and the program then crashes). I tried debugging it, but my code seems ok, and I don't attempt to write anything. Does anyone know for sure?

Re: Opening Read-Only Access Files in Code

Nish Nishant28-Nov-01 16:23

Nish Nishant

28-Nov-01 16:23

I think you should post the relevent code snippets here for anyone to be able to help you.

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Re: Opening Read-Only Access Files in Code

Mike Nordell28-Nov-01 17:10

Mike Nordell

28-Nov-01 17:10

I recently tried to open a read-only DB in code

Using what? ODBC? DAO? ADO? OLE-DB? RDO? [insert any new "technology" buzzword that has emerged since that I don't know about].

Without knowing this, we could as well answer "Yes, you can put a man on the moon".

Re: Opening Read-Only Access Files in Code

29-Nov-01 8:56

If you're using DAO, open the database both Exclusive and Read-only. This method does not create an .ldb file.

Joel Lucsy (jjlucsy@ameritech.net)

Dialog bar with WTL ?

28-Nov-01 14:32

Hi !

Does someone know how to create a DialogBar (Dialog window with Toolbar behavior, like MFCs CDialogBar) with WTL or Win API (without using MFC)?

I tried to put a dialog window into a ReBar control, but up to now i wasn`t able to insert a second (vertical) rebar control in my MDI MainFrame correctly without interfearing with the first ReBar ...

Any help is welcome ...

Using #pragma for byte-alignment

john john mackey28-Nov-01 12:54

john john mackey

28-Nov-01 12:54

Is there side-effects to using two (different) #pragma pack () statements in a single header file?

I have the following:

#pragma pack (push, firstPragma)
#pragma pack (2)

...
typedef struct
{
blah,...
} STRUCT_A;
...
#pragma pack (pop, firstPragma)

#pragma pack (push, secondPragma)
#pragma pack (4)
...
typedef struct
{
blah,...
} STRUCT_B;
#pragma pack (pop, secondPragma)

Im very curious on this issue.
Thanks.

Confused | :confused:

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