C / C++ / MFC Discussion Boards

Zdeslav Vojkovic2-Jan-06 23:11

2-Jan-06 23:11

It seems that you are trying to call some data exchange function while control is not yet created (e.g. you can't do that for a control in dialogs constructor, because control is not yet created). could it be that you are calling UpdateData(TRUE) in dialogs constructor? if so, try to move that code to WM_INITDIALOG handler (OnInitDialog). however, this is just a wild guess without your code.

Re: What happens in my VC++ application

Michael Dunn3-Jan-06 8:01

Michael Dunn

3-Jan-06 8:01

See the FAQ
3.1 What does a failed debug assert mean?[^]

--Mike--
Visual C++ MVP Cool | :cool:

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Implementation of Multipage PDF

Ramnath Panda2-Jan-06 20:31

Ramnath Panda

2-Jan-06 20:31

I want to implement a PDF Image file as multipage where each page consists of one image.Can you send the source code for the above.

Thanks & Regards
Ramnath

Ramnath Panda

Re: Implementation of Multipage PDF

khan++3-Jan-06 3:12

khan++

3-Jan-06 3:12

I think you will need to save your image files as TIFF files first, then they will be easy to concatenate, and then convert to PDF. LibTiff does that. Search for LibTiff and download it. It has various tools to concatenate tiffs, convert to pdf etc.

You did not mention to convert what format files to PDF. If they are tiff files, then half the work is done. If they are another format, then you could use CxImage (search for it on this site) to convert them to tiff first, then use LibTiff on them.

this is this.

facing prob with splitterwnd in CMainFrame of MDI app.

geeta_patil2-Jan-06 20:11

geeta_patil

2-Jan-06 20:11

hi all,
i want to split the MainFrame wnd of MDI app.i am able to split the CChilkdframe but CmainFrame in mDI app i am not..
i tried using OnCreateClient in Mainfrme.cpp but its giving assertion errors.

can anyone help me its very urgent..
thanks
Gets

Re: facing prob with splitterwnd in CMainFrame of MDI app.

Owner drawn2-Jan-06 20:18

Owner drawn

2-Jan-06 20:18

I don't think you can do that. You can only split MDI child windows not MDI parent window.

Hope I got your question right.

Jesus Loves You and Me Smile | :)

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Re: facing prob with splitterwnd in CMainFrame of MDI app.

geeta_patil2-Jan-06 21:20

geeta_patil

2-Jan-06 21:20

Yup,
you gotmy question...
i wanted it to look something like Query Analyser of Sql Server..
means exploreer on left view and a document on the right side
can u throw some light on this

thanks
Geeta

Re: facing prob with splitterwnd in CMainFrame of MDI app.

Owner drawn2-Jan-06 21:22

Owner drawn

2-Jan-06 21:22

Why do you need an MDI for this.

Just a simple frame inherited from CFrameWnd.

Split it up and assign it different views in different panes.

You can have nested panes.

Take a look at IdFromRowCol function.

Jesus Loves You and Me Smile | :)

Re: facing prob with splitterwnd in CMainFrame of MDI app.

geeta_patil2-Jan-06 21:51

geeta_patil

2-Jan-06 21:51

u mean to say hve simple SDI app and split it up
and then assign diff views to it ..
ok i tried that..
how to kep the right pane empty.. i mean it should hve anything..especially that white colour background

thanks
Geta

Re: facing prob with splitterwnd in CMainFrame of MDI app.

Owner drawn2-Jan-06 22:15

Owner drawn

2-Jan-06 22:15

geeta_patil wrote:
how to kep the right pane empty

Just have an emtpy view.

Jesus Loves You and Me Smile | :)

Eytukan3-Jan-06 5:28

Eytukan

3-Jan-06 5:28

hey i'm noticing it now only. you have slimmed down like me!!~~[b]~~ now we both look similar with our color,weight and marquee!! cheers Beer | [beer]

"But your mind is very complex, very tricky. It makes simple things complicated. -- that's its work. And for centuries it has been trained for only one thing: to make things so complicated that your life becomes impossible."- Osho

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Re: OT

Owner drawn3-Jan-06 16:52

Owner drawn

3-Jan-06 16:52

T-1000 wrote:
you have slimmed down like me

Yeap. You've got it buddy.

This one's cool.

Big Grin | :-D

Jesus Loves You and Me Smile | :)

Custom drawn Tab controls

MrNed2-Jan-06 20:00

MrNed

2-Jan-06 20:00

Ive seen lots of examples of completely rewritten tab controls, but has anyone done what should be a relatively simple override of CTabCtrl::DrawItem and called the XP theme functions? I just want an XP looking tab control where I can change the text color of certain tabs, but cant get the drawing to look right Frown | :(

Re: Custom drawn Tab controls

Owner drawn2-Jan-06 21:38

Owner drawn

2-Jan-06 21:38

An option is...

HiglightItem(nTabNumber, TRUE); //To Turn on highlighting

HighlightItem(nTabNumber, FALSE); //To Turn off highlighting

Jesus Loves You and Me Smile | :)

VC++ /updation problem in mfc

harshandu2-Jan-06 19:38

harshandu

2-Jan-06 19:38

HI,

There are two classes A and B as follows

class A
{

public:

update_host(CString hostname);

}

class B
{

public:

get_hostname();
}

The get_hostname() gets the hosts name and then calls update_host as folows

A aobject;
aobject.update_host(CString hostname);

now this is what i do in update_host(CString hostname)

update_host(CString hostname)
{

m_hostname=hostname;
UpdateData(FALSE) //to update the value in the edit box.

}

now,when i execute it,i get the error saying

Debug assertion failed.
file:wincore.cpp
line:3095.

Please help in this regards.

Thank you.

HEllo

Re: VC++ /updation problem in mfc

ThatsAlok2-Jan-06 21:08

ThatsAlok

2-Jan-06 21:08

harshandu wrote:
UpdateData(FALSE) //to update the value in the edit box.

I am taking assumption that Class A is CDialog Drived Class, have you checked, that Dialog Box is Visible State at the time UpdateData() is called?

As if the dialog Box is not created before call of UpdateData, the dialog box application likly to crash.

"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

Does Win32 console application supports WinMain and Winproc functions

chandu362-Jan-06 19:25

chandu36

2-Jan-06 19:25

Does Win32 console based application supports WinMain and WinProc

phani

-- modified at 1:27 Tuesday 3rd January, 2006

Re: Does Win32 console application supports WinMain and Winproc functions

kakan2-Jan-06 19:44

kakan

2-Jan-06 19:44

AFAIK, No.

The presence of WinMain and WinProc is what differentiates a Win32 app from a Win32 console app. A Win32 console app has got the main()-func.

Kakan

Start->Run search path

Chintoo7232-Jan-06 19:17

Chintoo723

2-Jan-06 19:17

What directories are searched for executables when we run a program from Start->Run
dialog box?

It starts MS Word if I just give "winword" in the Run dialog, but my environment variable
PATH does not have the directory "C:\Program Files\Microsoft Office\OFFICE11" which
has winword.exe. Anyone knows how this works?

thanks!

Re: Start-&gt;Run search path

Owner drawn2-Jan-06 19:43

Owner drawn

2-Jan-06 19:43

I think it searches HKEY_CLASSES_ROOT\Applications. This is the registry key for all applications currently installed in the system.

These are the applications that are listed in the open with dialog box.

So this could be it.

Jesus Loves You and Me Smile | :)

Re: Start-&gt;Run search path

Michael Dunn3-Jan-06 8:04

Michael Dunn

3-Jan-06 8:04

You can enter an executable name listed under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths

--Mike--
Visual C++ MVP Cool | :cool:

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DateTimePicker Issue

romuzu2-Jan-06 16:09

romuzu

2-Jan-06 16:09

Please help me with my problem.

When I add a MessageBox on OnChange Handler of DateTimePicker and click on the previous and next month scroll button during runtime, the DateTimePicker keeps on changing date. How can I fix this problem?

Detecting setup with hook

Castylx2-Jan-06 15:34

Castylx

2-Jan-06 15:34

Hey Everyone,

Can anyone give me some direction on the best way to detect if a program is starting a setup/installation process for a windows XP machine? I'm assuming that a hook is the best way to intercept the event, but what can I look for? Is there a specific message event or anything that I can look for, a function that always needs to get called when software is being installed?

Any help would be greatly appreciated.

-- Fernando

hardware security

happycpp2-Jan-06 15:31

happycpp

2-Jan-06 15:31

hello everyone...
i want to make a security project that gives the ability to control hardware parts...what i mean is that i want to click a button and the computer no longer sees the usb port and/or the device attached to it as if it's not even plugged(not disable or uninstall it's more like total invisibility)...this also contain not only usb, but ide , scsi , raid controllers etc...
this way no one can connect his "parasitic" drive or what ever you want to call it to my pc...
i think there's another aproach for this(beside the hiding) which is the "accesss denying" i don't know if this way can prevent the system from detecting these peripheral parts...
i tried to look for this kind of articles here in codeproject but i wasn't lucky...
i also tried to get something from my vs-msdn documentation and i found under "Platform SDK: Windows Management Instrumentation" Win32_IDEController and Win32_USBController but i found it really hard and confusing...if this is the right place for documentation please someone make a sample program so i can learn from it...
thanx a lot..

Can't open more than 16 documents in my application

brdavid2-Jan-06 15:04

brdavid

2-Jan-06 15:04

I am having a rather odd problem with my VC++ application when it comes to opening a certain number of documents. Here's a little background. Each document window that opens is a rather complicated formview run by a rather large and complicated object. The serialization alone saves to a file where the size averages about 200k. when I open around 16 documents, in debug the application pretty much stops working, that is I cannot open anything. Clicking on a menu results in nothing. Clicking the toolbar buttons results in nothing. Navigation completely halts. When run in release the application crashes when i open the 16th document. Sometimes I can get 17.

Now I'm thinking this is a memory issue. Certainly sounds like it. My following questions which I hope someone here can answer are:

1) What do you think this is?
2) If it is memory any ideas on solving it?
3) I was thinking perhaps I could have only the object that is currently active in memory, that is, if a person clicks a document window, then activation that object and clear the rest. Problem here is I have no idea how to do this? Opening up a document takes a bit of time: around 3 to 5 seconds to open a document. If I cleared the object I would have to rebuild it which means a 3 to 5 delay each time we switch to a new document window.
4) Any other ideas?

Thanks for the help! I would include source code, but we are talking a HUGE project here. If you need access to the code I can certainly make that happen. Maybe we can narrow the search down to a few c++ files.

Thanks again!

-- modified at 21:05 Monday 2nd January, 2006

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