C / C++ / MFC Discussion Boards

Re: Getting the data from a CString into an LPVOID data type

Joao Vaz3-May-02 6:33

3-May-02 6:33

Tom Archer wrote:
It's really a labour of love at this point

It isn't very difficult for you, you are a complet programmer freak Poke tongue | ;-P

Tom Archer wrote:
but 95% of this 1300 page book is solid.

OMG | :OMG:

, a trully effort without a doubt and synonym of endless coding and writing nights ...

Tom Archer wrote:
but my book answers about 50% of the questions I've seen on this board

It's better that it succeds , with 1300 pags ! Serioulsly ,if it answers 50% then is a certainly a good book .

Tom Archer wrote:
I would definitely compare it to any other MFC book (including Prosise's) in terms of completeness

Now that's enough !!!! (conspiracy theory) You certainly want your name immortalized as great programming author , first with Inside C# , then with VC++ .Net Bible, then , who knows MC++ ? Shame on you , you bad boy ! You are respected more than enough by your peers, MFC and C# programmers , and you want more !!!!! I caught you, you want to say I'm the king of the
world !!! I'll defend the CPians with all my ... scratching ... but I'm corruptible ... if you offer me your 2nd of Inside C# with a signed autograph, then I'll forget and let you do what your evil mind planned .

Tom Archer wrote:
No problem. I'll need sales then too

Every penny is welcome Laugh | :laugh:

Cheers,
Joao Vaz
Frustrated TCL programmer,good c++ programmer wannabe

Re: Getting the data from a CString into an LPVOID data type

Tom Archer3-May-02 6:52

Tom Archer

3-May-02 6:52

Joao Vaz wrote:
It isn't very difficult for you, you are a complet programmer freak

Very true Smile | :)

It's so cool for our jobs to also be our hobbies.

Joao Vaz wrote:
a trully effort without a doubt and synonym of endless coding and writing nights

You got the endless night bit, right. I am so glad to be done. It's been fun, but it's time to move on to another project.

Joao Vaz wrote:
Now that's enough !!!! (conspiracy theory) You certainly want your name immortalized as great programming author , first with Inside C# , then with VC++ .Net Bible, then , who knows MC++ ? ...you want to say I'm the king of the
world !!!

I guy's gotta have a plan Smile | :)

Joao Vaz wrote:
I'll defend the CPians with all my ... scratching ... but I'm corruptible ... if you offer me your 2nd of Inside C# with a signed autograph, then I'll forget and let you do what your evil mind planned

Laugh | :laugh:

Cheers,
Tom Archer
Author, Inside C#

A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others.

Re: Getting the data from a CString into an LPVOID data type

Nish Nishant3-May-02 5:39

Nish Nishant

3-May-02 5:39

Thanks Tom. Now my confusion has gone Smile | :)

Nish

Check out last week's Code Project posting stats presentation from :-
http://www.busterboy.org/codeproject/
Feel free to make your comments.

Re: Getting the data from a CString into an LPVOID data type

Tom Archer3-May-02 5:48

Tom Archer

3-May-02 5:48

Er....remember when I recommended that you not leave yourself so open Smile | :)

Cheers,
Tom Archer
Author, Inside C#

A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others.

Re: Getting the data from a CString into an LPVOID data type

Nish Nishant3-May-02 4:20

Nish Nishant

3-May-02 4:20

kyledunn wrote:
Tom Archer shared this answer with me so

When and where?

Nish

Check out last week's Code Project posting stats presentation from :-
http://www.busterboy.org/codeproject/
Feel free to make your comments.

Re: Getting the data from a CString into an LPVOID data type

Tom Archer3-May-02 4:40

Tom Archer

3-May-02 4:40

Answered in your other query for same Smile | :)

Cheers,
Tom Archer
Author, Inside C#

A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others.

Re: Getting the data from a CString into an LPVOID data type

Nish Nishant3-May-02 5:43

Nish Nishant

3-May-02 5:43

Tom Archer wrote:
Answered in your other query for same

Thanks. I saw it.
In the confuision I forgot my original reason.
You told him to use GetBuffer, but I think you didnt tell him about RelkeaseBuffer Smile | :)

Nish

Check out last week's Code Project posting stats presentation from :-
http://www.busterboy.org/codeproject/
Feel free to make your comments.

Re: Getting the data from a CString into an LPVOID data type

Tom Archer3-May-02 5:53

Tom Archer

3-May-02 5:53

Call ReleaseBuffer is not necessary in this context.

Cheers,
Tom Archer
Author, Inside C#

A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others.

Re: Getting the data from a CString into an LPVOID data type

kyledunn3-May-02 4:47

kyledunn

3-May-02 4:47

I emailed Tom directly. He responded shortly before I posted his help here.

Kyle

Re: Getting the data from a CString into an LPVOID data type

mystro_AKA_kokie3-May-02 4:01

mystro_AKA_kokie

3-May-02 4:01

Convert first to LPCTSTR then maybe LPSTR then to LPVOID. These are all pointers, CString isn't so you need to convert to a pointer first. The internal data structure of a cstring object is an LPCTSTR pointer; you acess it directly by calling GetBuffer(int nmax),but you also have to call ReleaseBuffer() after .

Database Query containing single or Double Quotes

Samir Sood3-May-02 3:19

Samir Sood

3-May-02 3:19

When i construct a query containng the query which conatins either the single quotes or double quotes then the query crashes . Can anyone suggest the solution

Samir

Re: Database Query containing single or Double Quotes

Nish Nishant3-May-02 4:04

Nish Nishant

3-May-02 4:04

Samir Sood wrote:
When i construct a query containng the query which conatins either the single quotes or double quotes then the query crashes . Can anyone suggest the solution

For each quote you have in a string, add an extra quote.
Thus if you want to insert a string such as "John's Bakers" into a table, insert it as "John''s Bakers" and all will be well Smile | :)

Nish

Check out last week's Code Project posting stats presentation from :-
http://www.busterboy.org/codeproject/
Feel free to make your comments.

Re: Database Query containing single or Double Quotes

3-May-02 6:44

But what if string contains the double quotes as part of it

Re: Database Query containing single or Double Quotes

Tom Archer3-May-02 6:47

Tom Archer

3-May-02 6:47

As Nish said, you need to double up on the quotes. For example, Access chokes on quotes in a string value because it uses quotes as the string delimiter. Therefore, here's a function I wrote a few years ago to do what you need. It only handles single quotes, but obviously you can easily modify it for your needs.

CString FormatValidAccessString(CString const & sStringToBeFormatted)
{
 CString sFormattedString;

 int iStringLength = sStringToBeFormatted.GetLength();
 char cChar;

 for (int i = 0; i < iStringLength; i++)
 {                               
  cChar = sStringToBeFormatted.GetAt(i);
  sFormattedString += cChar;
  if ('\'' == cChar)
  {
   sFormattedString += cChar;
  }
 }	

 return sFormattedString;		
}

Cheers,
Tom Archer
Author, Inside C#

A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others.

Re: Database Query containing single or Double Quotes

Stefan Pedersen3-May-02 8:54

Stefan Pedersen

3-May-02 8:54

Or to keep it really simple...

CString cMyString = "string possibly containing chars that need to be escaped...";
cMyString.Replace("'", "''");

If I remember correctly you can even get the string quotation character from ADO (the connection object probably)
so that your code is a little bit more provider independent. It's usually " for "real" databases Smile | :)

ComboBox - selchange?

jimNLX3-May-02 3:11

jimNLX

3-May-02 3:11

I created a combobox and put a list of data within it. Then I instantiated it and then added a selchange message.

I was trying to add a popup and some other code to the selchange but nothing I put under it ever gets executed.

I do get the new index for the item selected.

Any help would be much appriciated.

Thanks! Confused | :confused:

Re: ComboBox - selchange?

Michael P Butler3-May-02 4:20

Michael P Butler

3-May-02 4:20

Is the OnSelChange function being executed or does it not get called. If the function is being called, can you post what code you are expecting to execute.

Is the OnSelChange function in the dialog class?

Michael Smile | :)

Communication is the first step towards enlightenment.

Re: ComboBox - selchange?

jimNLX3-May-02 7:24

jimNLX

3-May-02 7:24

Well I went and deleted the combobox sechange and started over.

Now it seems like it is executing but the index isn't getting set. HMMM

How to set EditBox as readonly and steel have a white backgroud ?

adara3-May-02 2:37

adara

3-May-02 2:37

How to set EditBox as readonly and steel have a white backgroud ?
any ideas ? Rose | [Rose]

Re: How to set EditBox as readonly and steel have a white backgroud ?

Tom Archer3-May-02 3:15

Tom Archer

3-May-02 3:15

While I disagree with your UI decision (it definitely goes against what users are accustomed to), you can do this by handling the OnCtlColor message. There's a few threads here about how to do that. Just search on that function name and you should find what you need.

Cheers,
Tom Archer
Author, Inside C#

A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others.

Re: How to set EditBox as readonly and steel have a white backgroud ?

john john mackey3-May-02 5:58

john john mackey

3-May-02 5:58

I believe the reference you will find helpful is by Chris Losinger, Colorizing Edit Control at CodeProject.com

This may or may not be exactly the one, but I have a ZIP that I downloaded named "ColorEdit_ColorStatic".

It tells how to change colors of foreground text and background for both edit controls and static controls (e.g. labels.)

Good luck. These helped me bring my dialogs to life!

Johnny

reading sectors from CD

hobnob3-May-02 2:33

hobnob

3-May-02 2:33

anybody have any sample c/c++/asm code to read sectors from a cd, or know where i can find an example ?

Re: reading sectors from CD

3-May-02 5:50

Try loading wnaspi32.dll and use that to send commands to the cd-rom. Or just look up documentation on the ASPI layer.

No School
No Job
No Problem

Q: how to obtain message box font display property setting

Gil Clark3-May-02 2:16

Gil Clark

3-May-02 2:16

Hey everybody.
You know how in Windows Display Properties Appearance you can change the colors and fonts for many system items like menus, 3DObjects, etc. You can obtain the color settings using GetSysColor(), but I was just wondering if anybody out there knew how to obtain the font settings for the items? Particularly the Message Box.

I've searched through Code Project and MS Knowledge Base but didn't find anything (probably not using the right keywords or something).

Anyone?

Thanks

Re: Q: how to obtain message box font display property setting

Roger Allen3-May-02 2:58

Roger Allen

3-May-02 2:58

In MFC you shoul dbe able to get a handle to some fonts by using the AUX_DATA structure afxData. It has some fonts in it as HFONT objects. Nit sure if they are the ones you need.

Roger Allen
Sonork 100.10016

If I had a quote, it would be a very good one.

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