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Re: Visual c++ - Access mdb modification question

dlhson13-Aug-02 7:09

dlhson

13-Aug-02 7:09

If your program is affected by that changes, you must recode it

Hung Son
A Vietnamese student
i-g.hypermart.net
dlhson2001@yahoo.com

Re: Visual c++ - Access mdb modification question

Anonymous13-Aug-02 10:01

Anonymous

13-Aug-02 10:01

What if it is an upgrade?
New features added but everthing that was there before stayed.
Like I added some new tables/attributes. OMG | :OMG:

classview info not available

ns13-Aug-02 5:21

13-Aug-02 5:21

I deleted the clw file and rebuilt the project but now I dont have a clw file at all, and theres no clas view information. Its not a read-only folder. Please help! I am so dependent on this pane for navigation...
Thanks,
ns

Re: classview info not available

C^hris L^osinger13-Aug-02 5:25

C^hris L^osinger

13-Aug-02 5:25

bring up the class wizard (ctrl-w). it will ask if you want it to rebuild your .clw file. say yes.

-c

Conservative:
One who admires radicals centuries after they're dead.
-- Leo C. Rosten

image effects!

Re: classview info not available

ns13-Aug-02 5:40

13-Aug-02 5:40

I did as you said. A clw file got built. I reloaded the project. It still doesnt want to load any class info!! Inciedntally this is the project that was crashing intermittently while exiting with the right cross system menu (dont know why yet - waiting for an answer to my thread on how to debug an empty WM_SYSCOMMAND handler!!). MAybe theres a connection?

Anyways the classes stubbornly wont load in the Class View pane.... Cry | :((

Re: classview info not available

Bijesh13-Aug-02 6:21

Bijesh

13-Aug-02 6:21

ns wrote:
Inciedntally this is the project that was crashing intermittently while exiting with the right cross system menu (dont know why yet - waiting for an answer to my thread on how to debug an empty WM_SYSCOMMAND handler!!)

Close MsDEv and then try running the task manager. You probably have an instance of MSDEV.EXE running. End that process and start MsDev again and load the project..

--------------------------------------------------

Re: classview info not available

Roger Allen13-Aug-02 5:26

Roger Allen

13-Aug-02 5:26

The CLW file is rebuilt when you envoke ClassWizard. Just do a Ctrl+W and it should be rebuilt.

Roger Allen
Sonork 100.10016

He dodges, he weaves, and he never gets enough sleep. He is kind to small animals. - Chris maunder.
You can tell from his picture he doesn't sleep, and what kind of things does he weave?

Re: classview info not available

JT Anderson13-Aug-02 6:18

JT Anderson

13-Aug-02 6:18

The .clw file has nothing to do with the ClassView. You may have a corrupt .ncb file. Try deleting the .ncb file before you start VC++.

Re: classview info not available

Le centriste13-Aug-02 8:54

Le centriste

13-Aug-02 8:54

Remove the "Read Only" attribute from the .ncb file.

Did you put that file into source safe? It is not a good idea. When putting the files of a project into VSS, do it via VC++. If this is not the case, I apologize. Blush | :O

Michel

It is a lovely language, but it takes a very long time to say anything in it, because we do not say anything in it, unless it is worth taking a very long time to say, and to listen to.

- TreeBeard

Debugging winodows services?

clintsinger13-Aug-02 5:09

clintsinger

13-Aug-02 5:09

I was wondering how one goes about debugging windows services? Any pointers to tutorials would be greatly appreciated.

Re: Debugging winodows services?

Tomasz Sowinski13-Aug-02 5:12

Tomasz Sowinski

13-Aug-02 5:12

For a start, check KB article Q98890.

Tomasz Sowinski -- http://www.shooltz.com

What is "scratch" and why can everything be made from it?

Re: Debugging windows services?

Daniel Lohmann13-Aug-02 5:50

Daniel Lohmann

13-Aug-02 5:50

The biggest problem with a service is, that you can not launch it from inside VStudio debugger because it has to be launched by the SCM. However, it is still possible to debug it:

If the service already has been started, you can connect a debugger via the task manager (right click on the process name and choose "Debug") or from the Debug/Attach to Process menu in VStudio. You can then load the source files and set breakpoints into the source.

However, if you have to debug the service startup code the above technique does not work because the service stops running even before you had a chance to attach the debugger. In this case it is useful to put a hardcoded breakpoint into the code, e.g. at beginning of your ServiceMain(). A hardcoded breakpoint is an software interrupt 3:

#define BREAK __asm int 3

Just put the BREAK statement at an appropriate place in your code. If the service is started via SCM an "unhandled exception" message appears. Choose cancel to start the debugger and voila - execution is halted at the position of BREAK.

On thing to keep into mind, because it may be confusing: If the service runs under another user account or LocalSystem (as almost any service), the debugger (VStudio) instance is also started under this user account. Therefore it might be that your user defined settings (shortcuts, toolbars, keyboard mapping, etc.) are not available.

--

Daniel Lohmann

http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there Big Grin | :-D

)

Transferring CE Applications to the Desktop

gm_coll13-Aug-02 5:08

gm_coll

13-Aug-02 5:08

Hi,

I've been developing an application in eMbedded Visual C++ to run on a Handheld PC, but someone has expressed a desire to use the application on a desktop PC. Is there any quick way of transferring the code for the application across to the desktop IDE (Visual Studio I presume)?

Thanks in advance.

Graham

Re: Transferring CE Applications to the Desktop

Ancient Dragon13-Aug-02 14:50

Ancient Dragon

13-Aug-02 14:50

You will have to recompile it for the desktop because the processors are not the same.

Re: Transferring CE Applications to the Desktop

gm_coll13-Aug-02 22:27

gm_coll

13-Aug-02 22:27

When you say recompile it for the desktop, I take it this means I will have to Copy and Paste my code into a different IDE (Visual Studio).

Thanks,

Graham

Re: Transferring CE Applications to the Desktop

Ancient Dragon14-Aug-02 0:07

Ancient Dragon

14-Aug-02 0:07

Yes. Just crate a new project with VC++6 (or whatever compiler you use) and copy the files into it. You may have to make some code changes if the program uses any WinCE-specific API calls. Also, you may also have to make some minor changes to string literals, depending on how you coded them for WinCE. For example, if you did this

[code]
CString something = L"Hello World";
[/code]

instead of this
[code]
CString something = _TEXT("Hello World");
[/code]

Exporting to Excel, Powerpoint, etc....

Carlos Antollini13-Aug-02 4:26

Carlos Antollini

13-Aug-02 4:26

Anybody, Knows where I can find information how I can export to Excel, and Powerpoint whitout using OleAutomation?????.... Mad | :mad:

Best Regards

Carlos Antollini.
Sonork ID 100.10529 cantollini

CFileDialog - Changing file types in runtime

Ixion13-Aug-02 4:18

Ixion

13-Aug-02 4:18

Hello...

Can anyone help me? I need to change my CFileDialog file type/filter on runtime in this dialog.

It will work like this: When i press a button it will change the actual type with another one and refresh the list, so it only appears the right kind of files...
I'm a newbie in this so a little of code will be helpfull.

Thanks in advance..

Fluid fast motion

Vitaly Belman13-Aug-02 3:48

Vitaly Belman

13-Aug-02 3:48

How do you move an object quickly and fluidly? For example a game character that needs to do a 20 pixels jump, does it ever move more than 1 pixel? But then you should use a high-resolution timer for quick ticks?

Suspicious | :suss:

Vitaly Belman Suspicious | :suss:

Re: Fluid fast motion

Brian Azzopardi13-Aug-02 3:52

Brian Azzopardi

13-Aug-02 3:52

Don't move sprites per frame coz you'll get different motion on different CPUs. The game should implement a game timer which ticks @ 20HZ and update the character per game tick. Thus if the frame-rate moves around the character will still travel the same distance.

Hi-res timing is important. Use either QueryPerfomanceCounter() or use the Intel RDTSC assembly instruction. RDTSC is better as it has low overhead but there are some tips you should follow.

bibamus, edamus, cras moriemur

[eat, drink, for tomorrow we die]

Re: Fluid fast motion

Tomasz Sowinski13-Aug-02 3:59

Tomasz Sowinski

13-Aug-02 3:59

For maximum fluidity, you should synchronize with the vertical refresh rate, which isn't easy under Windows. If your target machine has DX7 or better, you may use IDirectDraw::WaitForVerticalBlank.

If you're not using DX, then ensure that you have backbuffering and keep some steady rate with QueryPerformanceCounter or timeBeginPeriod(1).

Tomasz Sowinski -- http://www.shooltz.com

What is "scratch" and why can everything be made from it?

Re: Fluid fast motion

Jon Hulatt13-Aug-02 5:39

Jon Hulatt

13-Aug-02 5:39

The general point to regard with animation is that you should give your sprite a velocity, measured in distance/time units, NOT distance/loop iteration.

STL is a religeon. Enquiries to Reverend Christian Graus

quick file question...

Nitron13-Aug-02 3:34

Nitron

13-Aug-02 3:34

How do I check if a file exists or not? I have tried the following:

<br />
   CString f, msg;<br />
<br />
   f = __argv[i];<br />
   ifstream infile(f);<br />
   <br />
   if(!infile)<br />
   {<br />
	msg.Format("Could not open: %s",f);<br />
	AfxMessageBox(msg);<br />
   }<br />
<br />
   else<br />
        AfxMessageBox("file opened");

But if the file doesn't exist, it just makes one!!! Any input is appreciated. Thanks!

Nitron
_________________________________________--
message sent on 100% recycled electrons.

Re: quick file question...

Tomasz Sowinski13-Aug-02 3:44

Tomasz Sowinski

13-Aug-02 3:44

Check the code below if you don't mind using Win32 API:

bool FileExists(LPCTSTR szFilename)
{
	WIN32_FIND_DATA findFileData;
	HANDLE hFind = FindFirstFile(szFilename, &findFileData);
	if (hFind == INVALID_HANDLE_VALUE)
	{
		return false;
	}
	VERIFY(FindClose(hFind));
	return true;
}

Tomasz Sowinski -- http://www.shooltz.com

What is "scratch" and why can everything be made from it?

THANK YOU!!!

Nitron13-Aug-02 3:58

Nitron

13-Aug-02 3:58

Cool! You guys rock!!! One day I'm gonna grow up to be a knowledgable programmer just like you!

Rose | [Rose]

Nitron
_________________________________________--
message sent on 100% recycled electrons.

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