Would a kind soul... - C / C++ / MFC Discussion Boards

Re: Any solution to class redefinition

Stephane Rodriguez.23-Mar-03 4:29

Stephane Rodriguez.

23-Mar-03 4:29

me leaving the class room looking down my shoes. Wink | ;)

[edit]#pragma once is not a VS.NET extension.[/edit]

Re: Any solution to class redefinition

Jörgen Sigvardsson23-Mar-03 5:21

Jörgen Sigvardsson

23-Mar-03 5:21

.S.Rod. wrote:
[edit]#pragma once is not a VS.NET extension.[/edit]

Did it appear earlier? I assumed it was first included in VS.NET because VS.NET was the first environment where I noticed that the wizards generate code containing #pragma once.

Speaking of extensions, do you know by any chance if you can force folding points in C++ source files using some [un]documented trick? #region is what I want, but that seems to be a C# only feature.

--
Shine, enlighten me - shine
Shine, awaken me - shine
Shine for all your suffering - shine

Re: Any solution to class redefinition

Stephane Rodriguez.23-Mar-03 5:41

Stephane Rodriguez.

23-Mar-03 5:41

Jörgen Sigvardsson wrote:
Did it appear earlier? I assumed it was first included in VS.NET because VS.NET was the first environment where I noticed that the wizards generate code containing #pragma once.

As far as I can tell it was already available with MSDEV 97.

Jörgen Sigvardsson wrote:
Speaking of extensions, do you know by any chance if you can force folding points in C++ source files using some [un]documented trick? #region is what I want, but that seems to be a C# only feature.

There is no way to force outlining. But the context menu shows a way to play with outlines regardless of the language you are using (they are saved in the .suo file, like bookmarks and other stuff). More info here[^].

Re: Any solution to class redefinition

Jörgen Sigvardsson23-Mar-03 6:37

Jörgen Sigvardsson

23-Mar-03 6:37

.S.Rod. wrote:
But the context menu shows a way to play with outlines regardless of the language you are using (they are saved in the .suo file, like bookmarks and other stuff).

Yeah, I knew about that one. However, the .suo file is nothing I want to keep in CVS. The main reason I wanted to add the regions was to promote readability (hiding all the private stuff as much as possible which is of no interest anyway for the user of the class) and have it inlined in the code. Oh well, I guess I can't have everything. Smile | :)

--
Shine, enlighten me - shine
Shine, awaken me - shine
Shine for all your suffering - shine

Re: Any solution to class redefinition

R^eservoir D^og23-Mar-03 23:57

R^eservoir D^og

23-Mar-03 23:57

It's not really a VS.NET extension coz i've used #pragma once in VC++ 6 also. Though not sure if it was present in earlier versions too or not.

And you will know my name is the Lord when I lay my vengeance upon thee.

Re: Any solution to class redefinition

boon kian23-Mar-03 17:40

boon kian

23-Mar-03 17:40

Hi ,

Really thanx a lot for the help !!!

bk

Re: Any solution to class redefinition

Jörgen Sigvardsson23-Mar-03 1:48

Jörgen Sigvardsson

23-Mar-03 1:48

Oh yeah, i forgot to mention that the define at the top of each header file should be unique for each header file.

I usually use this pattern:
If the file is called file.h, the define symbol becomes __FILE_H__

So, if I had Employee.h, I'd define the symbol as __EMPLOYEE_H__

Smile | :)

--
Shine, enlighten me - shine
Shine, awaken me - shine
Shine for all your suffering - shine

Would a kind soul...

Rob Manderson22-Mar-03 19:26

Rob Manderson

22-Mar-03 19:26

check their copy of windows.h and let me know if it has these lines maybe 20 lines from the start?

C++

#if(WINVER >= 0x0500)
#pragma message ("")
#pragma message ("NOTE: WINVER has been defined as 0x0500 or greater which enables")
#pragma message ("Windows NT 5.0 and Windows 98 features. When these headers were released,")
#pragma message ("Windows NT 5.0 beta 1 and Windows 98 beta 2.1 were the current versions.")
#pragma message ("")
#pragma message ("For this release when WINVER is defined as 0x0500 or greater, you can only")
#pragma message ("build beta or test applications.  To build a retail application,")
#pragma message ("set WINVER to 0x0400 or visit http://www.microsoft.com/msdn/sdk")
#pragma message ("to see if retail Windows NT 5.0 or Windows 98 headers are available.")
#pragma message ("")
#pragma message ("See the SDK release notes for more information.")
#pragma message ("")
#endif

I found them lurking in my copy of windows.h but when I went to the PSDK site at Microsoft to update it tells me I already have the latest version installed.

Rob Manderson

http://www.mindprobes.net

Re: Would a kind soul...

Michael Dunn22-Mar-03 20:25

Michael Dunn

22-Mar-03 20:25

That shows you how OLD VC 6 is. Wink | ;)

"Windows NT 5.0" is what we now call Win 2000. You should be using the PlatSDK include & lib dirs instead of the ones that shipped with VC, so you'll never see that message. Assuming you have a recent PSDK, you can click on Visual Studio Registation->Register PSDK Directories with Visual Studio in the PSDK program group to put the dirs in VC's search path.

--Mike--
THERE IS NO THERE IS NO BUT THERE IS MAGIC PIXIE DUST BUSINESS GENIE CODE PROJECT

Homepage | RightClick-Encrypt | 1ClickPicGrabber
"You have Erica on the brain" - Jon Sagara to me

Re: Would a kind soul...

Rob Manderson22-Mar-03 20:47

Rob Manderson

22-Mar-03 20:47

Aha!!!! Now I know why some constants weren't defined! I've installed the platform SDK within the last three months (when I arrived in the US and put my new machine together) but I never thought to update the search paths in Visual Studio... Doh!!! Wink | ;)

Thanks Mike Wink | ;)

Rob Manderson

http://www.mindprobes.net

How to disable key 'Print Screen' or others in MFC ?

CS42922-Mar-03 19:11

CS429

22-Mar-03 19:11

hello I need help ,I want to disable key 'print screen' and 'Ctrl+C' and 'Ctrl+V' in MFC(use CRichEditCtrl) but I don't know how to do,Please help
thank you.
i am a student in thailand

I need a equation thingy

Anonymous22-Mar-03 17:09

Anonymous

22-Mar-03 17:09

I need a class of some sort that takes an equation like 12391+19-334+x^2=d^4*123 or somthing and it must find when the values of x and d or more values multiple values are correct but it must accept a string type? As in the equation will be located within a string. DDoes anyone know where I can find a program that does this? Exactly?

Re: I need a equation thingy

Jörgen Sigvardsson24-Mar-03 0:46

Jörgen Sigvardsson

24-Mar-03 0:46

Mathcad? Maple?

--
Shine, enlighten me - shine
Shine, awaken me - shine
Shine for all your suffering - shine

KillTimer() inside a TimerProc?

Moak22-Mar-03 16:27

Moak

22-Mar-03 16:27

Hi,
is it safe to call KillTimer() inside a TimerProc? MSDN does not mention it's bad for a timer proc to stop it's timer, just want to make sure I'm not doing something evil...

Thanks, Moak

Re: KillTimer() inside a TimerProc?

567890123423-Mar-03 1:42

5678901234

23-Mar-03 1:42

Yes, it's OK.

Re: KillTimer() inside a TimerProc? - thx

Moak23-Mar-03 13:20

Moak

23-Mar-03 13:20

thanks

SHFileOperation: making new folders?

IGx8922-Mar-03 15:34

IGx89

22-Mar-03 15:34

Is it possible to have SHFileOperation automatically create new folders when copying files? For instance: "d:\testfile.txt" to "d:\somefolderthatdoesn'tcurrentlyexist\testfile.txt". If it doesn't do that, is there an easy way to get around that limitation, without having to do some complex string parsing to find and make new folders?

Re: SHFileOperation: making new folders?

Ravi Bhavnani23-Mar-03 9:52

Ravi Bhavnani

23-Mar-03 9:52

I'll be posting my FileSystem article soon. It provides this and other convenient functions. Meanwhile, here's the logic:

long FileSystem::createDir
  (CString strDirectory)  // directory
{
  // Return if directory already exists
  if (dirExists (strDirectory))
     return (Status::Duplicate);
 
  // First create parent directory - return if unable
  CString strDirParent;
  getParentDir (strDirectory, strDirParent);
  if (!strDirParent.IsEmpty() && !dirExists (strDirParent))
     {
       long nStatus = createDir (strDirParent);
       if (nStatus == FileSystem::Status::Error)
          return (nStatus);
     }
 
  // Then create directory
  DWORD dwStatus = ::CreateDirectory (strDirectory, NULL);
  if (dwStatus == 0)
     return (Status::Error);
  return (Status::Success);
}

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Bubble Tool Tips

Stober22-Mar-03 11:18

Stober

22-Mar-03 11:18

Anyone know how to create those bubble-style tool tips? standard tool tips derived from CToolTipCtrl are such a boaring rectangle.

Re: Bubble Tool Tips

Neville Franks22-Mar-03 11:21

Neville Franks

22-Mar-03 11:21

Mel wrote:
Anyone know how to create those bubble-style tool tips? standard tool tips derived from CToolTipCtrl are such a boaring rectangle.

Have you looked here on CP?

Neville Franks, Author of ED for Windows. www.getsoft.com
Make money with our new Affilate program

Re: Bubble Tool Tips

Ancient Dragon22-Mar-03 11:52

Ancient Dragon

22-Mar-03 11:52

Yes, but I just now found something that will probably work: "Balloon Help as a non-modal replacement for MessageBox() By Shog9" Smile | :)

Re: Bubble Tool Tips

Eugene Pustovoyt23-Mar-03 4:48

Eugene Pustovoyt

23-Mar-03 4:48

You must add the TTS_BALLOON style to your CToolTipCtrl object.

m_pToolTip.Create(this, TTS_BALLOON);

May be you need to define this style

#ifndef TTS_BALLOON
#define TTS_BALLOON 64
#endif

Or you can look my class CPPTooltip Big Grin | :-D

Best regards,
Eugene Pustovoyt

Re: Bubble Tool Tips

Ancient Dragon23-Mar-03 7:34

Ancient Dragon

23-Mar-03 7:34

Thanks for your suggestion --exactly what I wanted. Smile | :)

Creating VC6 compatible library with VC7

Mikko Mononen22-Mar-03 10:14

Mikko Mononen

22-Mar-03 10:14

Hi,
I'm working on a SDK for a program I have done and I have problem using the static library I provide with VC6. The library is build using VC7. So far my searches has been unsuccesful. Has anyone else found solution for this?

When I was migrating from VC5 to VC6 I remember there was a compiler switch to make VC5 compatible static libraries. I dont remember wich one it was though.

I made a test lib, and tried to use it with VC6 and I got for example following errors in the linker:

debug build:
corelibd.lib(Vector3C.obj) : error LNK2001: unresolved external symbol __RTC_CheckEsp
corelibd.lib(ControllerC.obj) : error LNK2001: unresolved external symbol __RTC_Shutdown
corelibd.lib(TimeSegmentC.obj) : error LNK2001: unresolved external symbol __RTC_InitBase
corelibd.lib(TimeSegmentC.obj) : error LNK2001: unresolved external symbol @_RTC_CheckStackVars@8

in both debug and release:
corelibd.lib(ParamI.obj) : error LNK2001: unresolved external symbol __ftol2
corelibd.lib(KeyC.obj) : error LNK2001: unresolved external symbol "void __cdecl operator delete[](void *)" (??_V@YAXPAX@Z)
corelibd.lib(KeyC.obj) : error LNK2001: unresolved external symbol "void * __cdecl operator new[](unsigned int)" (??_U@YAPAXI@Z)

For me it looks like the standard library is different in VC7. Any ideas how to overcome this?

using CTreeCtrl with a CObArray

Colin Davidson22-Mar-03 8:02

Colin Davidson

22-Mar-03 8:02

I have written a small program that inserts items into an array and then uses the array to create a tree, problem is i don't know how to relate the tree to the array once it has been created.

ie.
a tree with 3 Name items, relates to an array with 3 name and address items.
I want to be able to click on the 2nd name and return the 2nd address.

If anyone could help with the function call to get an integer value for the selected item it would be great, or some casting work around.

Thanks in advance

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.