Re: AUTOCAD in Visual C++ - C / C++ / MFC Discussion Boards

need help in connecting VC++ with Oracle

alex30322-Feb-04 23:01

22-Feb-04 23:01

Hi I am new to VC++ and have given the task to connect VC++ with the Oracle,so plz some body help me i have no idea from where i have to start caze i am really unable to understand how the VC program control flows so plz help me in that also can i use the ADO componenets for that tell me in detail and if possible plz refer me a tutorial including source code for it.
Thanx
alex303

MFC Serialization

Neha22-Feb-04 22:28

Neha

22-Feb-04 22:28

I have a class structure as follows:

Class A: public CObject
{

}
Class B: Public A
{

}
Now I want to serialize pointer class B using CArchive.
How can this be done?

Regards

Re: MFC Serialization

Selvam R23-Feb-04 0:25

Selvam R

23-Feb-04 0:25

Hi,

http://www.codeproject.com/cpp/serialization_primer3.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_MFCNOTES_TN002.asp

With Regards,
R.Selvam

Re: MFC Serialization

Prakash Nadar23-Feb-04 0:31

Prakash Nadar

23-Feb-04 0:31

in .h file

class A : public CObject
{
public:
    DECLARE_SERIAL( A )
    // empty constructor is necessary
    A(){};

    void Serialize( CArchive& archive );
};

in .cpp file

IMPLEMENT_SERIAL( A, CObject, 1 )
void A::Serialize( CArchive& archive )
{
    // call base class function first
    // base class is CObject in this case
    CObject::Serialize( archive );

    // now do the stuff for our specific class
    if( archive.IsStoring() )
         ///serialize it        
    else
        //deserialise it
}

Hope this code help you , for further reading MSDN has good explanation for
serialization.

1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time.
2.Why do people ask for time from people who are not wearing a wrist watch.
Prakash,
India.

Is there any Tree control that shows the expansion of the nodes horizontally ?

Gem22-Feb-04 22:20

Gem

22-Feb-04 22:20

I would like to see my binary tree nodes and their data contents by using a tree control, but I would like to show it in horizontaly and from top to bottom expanding way, not the vertically way as in the explorer style tree control. This can be implemented using available tree controls or does this require a fully new implementation ?

Re: Is there any Tree control that shows the expansion of the nodes horizontally ?

Prakash Nadar23-Feb-04 0:33

Prakash Nadar

23-Feb-04 0:33

I dont think there is any standard control that you looking for...
I guess its a complete implementatino from the scrach, unless you find one already implemented, but no, no standard control.

1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time.
2.Why do people ask for time from people who are not wearing a wrist watch.
Prakash,
India.

AUTOCAD in Visual C++

Anonymous22-Feb-04 21:58

Anonymous

22-Feb-04 21:58

I want to import an autocan drawings DWG or DXF and save in my app. and then redraw the drawing in my app
please help me

Re: AUTOCAD in Visual C++

Mike Eriksson22-Feb-04 22:30

Mike Eriksson

22-Feb-04 22:30

I assume that you don't want to have AutoCAD installed on the computer.

Then you have two options

The official way: Contact Autodesk and apply for an AutoCAD OEM license. this is rather expensive and it's not certain that you qualify for a license, You need to sell a lot of applications...
http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=790640[^]

The other way: Apply for a free membership at OpenDwg.org. This is a community that has reengineered the DWG format and created a library for reading and writing...
http://opendwg.org/[^]

The hard way: If you only need DXF then you can get the standard here
http://usa.autodesk.com/adsk/servlet/item?id=752569&siteID=123112[^]

Then you can create your own library! If you do, please create an article on CodeProject so we all can take advantage of it!!

One extra thing: Autodesk is pushing a new format, DXF. This is a format that is specially made for Internet. You find more info here
http://usa.autodesk.com/adsk/servlet/index?id=3232971&siteID=123112&wac=ILC-KN0099780857[^]

Hope this will help!

Anders Eriksson
Sonork 100.21825

Converting an in-proc server to out-of-proc server

Roozbeh6922-Feb-04 21:53

Roozbeh69

22-Feb-04 21:53

Hello everybody,

Does anybody know, how I can convert an in-proc server project written in ATL 3.0 (VC++ 6.0) to local server (exe version) or vice versa?

I mean that what changes, I have to make to the project settings and maybe to the source code and/or other files in the project? I have seen a sample project "ADOSAMP" that has several project settings for building dll or exe versions.

Regards,
Roozbeh

Re: Converting an in-proc server to out-of-proc server

Prakash Nadar23-Feb-04 0:43

Prakash Nadar

23-Feb-04 0:43

To convert inproc to out of proc you cant do it by project settings.

You need to construct new project as ATL exe service, If you inproc server is using MFC then lot of troblem (coz ATL-exe service by default does not suppor MFC, you need to add MFC support manually)

Then add all the files that you have added to the dll, like .h ,.cpp,.idl fiels to the new workspace and little changes in each new .h.cpp file about the #includes will let you migrate,

But frankly its very laborious thing to do.. but this is the way to be done.

1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time.
2.Why do people ask for time from people who are not wearing a wrist watch.
Prakash,
India.

Hide console window

Abebe22-Feb-04 21:33

Abebe

22-Feb-04 21:33

Hi,

I've created a console application and want to hide the (console) window when the app. is started. I know you can achieve this by calling 'ShellExecute', but that's not what i want. I remember i did this at one point by using '#pragma comment (linker , *bladiebla*)'. I don't exactly remember the rest, but i think it was something like that. Can anbody help me out here?

Thanks

Er zit een korstje op mijn aars.

Re: Hide console window

Abebe22-Feb-04 21:50

Abebe

22-Feb-04 21:50

forgettaboutit.....already found it... '#pragma comment(linker, "/subsystem:\"windows\" /entry:\"mainCRTStartup\"")'...this works just fine.

Er zit een korstje op mijn aars.

Re: Hide console window

Prakash Nadar23-Feb-04 0:48

Prakash Nadar

23-Feb-04 0:48

You can do the same thing in project settings->link/catagory output Entry-point symbol.

1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time.
2.Why do people ask for time from people who are not wearing a wrist watch.
Prakash,
India.

How to run a programm from memory location

Anonymous22-Feb-04 20:32

Anonymous

22-Feb-04 20:32

HI,

I have a program that is loaded in memeory and i know its memory address , so how can i launch/Run that progrmam without using ShellExecute(..) etc.

thanx

Re: How to run a programm from memory location

Monty²23-Feb-04 0:24

Monty²

23-Feb-04 0:24

i don't understand the problem but here is a solution may be it is what u want

from ur program load another program in YOUR memory not by ShellExecute or anything simply read the file and store the contents

then simply do a jump to that address

_asm jmp (wherever u want)

don't forget to call jmp or ret from the loaded code to ur own code so u can exit properly

Hope all this makes sense Smile | :)

C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg

Re: How to run a programm from memory location

Prakash Nadar23-Feb-04 0:50

Prakash Nadar

23-Feb-04 0:50

I dont thing this is going to work with exe files, for exe file you need to recalculate the far calls present in the exe file also rebasing problem needs to be taken care...

Your solution is rite but for .COM files.

1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time.
2.Why do people ask for time from people who are not wearing a wrist watch.
Prakash,
India.

Re: How to run a programm from memory location

Monty²23-Feb-04 2:11

Monty²

23-Feb-04 2:11

The Guy originally wrote :
I have a program that is loaded in memeory and i know its memory address , so how can i launch/Run that progrmam without using ShellExecute(..) etc.

i don't see any mention of exe or any com file , The program in memory can be just a chunk of asm instructions not necessarily an exe in PE format ,

Still the PE Header of the Executable can be patched accordingly to match the Loaded DLL's in memory

C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg

Re: How to run a programm from memory location

Prakash Nadar23-Feb-04 3:05

Prakash Nadar

23-Feb-04 3:05

The guy did not mention that how he had loaded the code into the memory. If assumed that he had loaded using readfile then no way he can execute the PE file or .exe file. But a .COM file can be exectued but dont know how it is going to function in windows envirionment.

Plus, lot of things are not known like was the stack, process id, sperate LDT, etc allocated for the code that has been loaded.

Over all according to me the Question is quite nonsence. Why anyone wants to play god when windows is there. Only person i can think of are virus writers.they want to imitate the OS to do some background job.

"Fear not of those who can kill the body and not the soul, rather fear Him who can kill both body and soul" - Bible
Prakash,
India.

How to load Child Dialog before program

catngo22-Feb-04 20:19

catngo

22-Feb-04 20:19

How do you load the pop-up (child) dialog before the program like the login screen?

Re: How to load Child Dialog before program

Balkrishna Talele22-Feb-04 23:58

Balkrishna Talele

22-Feb-04 23:58

You need to call dialog in
BOOL CMyClass::InitInstance()
{

CChildDialog dDlg;
dDlg.DoModal()

.
.
.
.
}

regards
Balkrishna Talele

Re: How to load Child Dialog before program

catngo23-Feb-04 21:49

catngo

23-Feb-04 21:49

How do I exit program when it only load the child dialog? either click OK or CANCEL for the X box, it still load the Main program. I try to use DestroyWindow() function but it give error.

Socket problem...

Prakash Nadar22-Feb-04 19:34

Prakash Nadar

22-Feb-04 19:34

I have a socket i am using normal blocking sockets (brekley sockets). I want to know before i call recv wheather it will become a blocking one or not. so that the socket dont block at that instance coz it is causing threading locking.

Is there any way to provide a timeout to the sockets..
i am not using MFC and so mfc CSocket is not a solution.

"When death smiles at you, only thing you can do is smile back at it" - Russel Crowe (Gladiator)

Re: Socket problem...

Anonymous22-Feb-04 21:02

Anonymous

22-Feb-04 21:02

Try using "select" call+FD_SET

Re: Socket problem...

Prakash Nadar22-Feb-04 21:56

Prakash Nadar

22-Feb-04 21:56

Thanx i guess this will solve my problem..
Smile | :)

1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time.
2.Why do people ask for time from people who are not wearing a wrist watch.
Prakash,
India.

causing a CScrollView to scroll by dragging the mouse outside client area

mickelliot22-Feb-04 14:07

mickelliot

22-Feb-04 14:07

Hi,

I have a CScrollView set up in one pane of an MDI splitterwindow application.

I would like the user to be able to scroll the view by clicking inside the CScrollView then dragging the mouse outside the client area. To see an example of what I mean, load up ms excel, click on a cell, then drag outside the child window (or outside the main frame of the application).

I thought I could do this by using "onmousemove" messages, calculating which way the user has dragged, and scrolling accordingly, but unfortunately I can't receive mouse coordinates when the user is outside the client area, and I only want the scrolling to occur when the user has dragged off the side of the CScrollView.

Any help would be GREATLY appreciated, thanks for your time.

Mick

Last Visit: 31-Dec-99 18:00 Last Update: 22-May-24 6:25

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