C++ MySQL Column Names - C / C++ / MFC Discussion Boards

Re: DEBUG to RELEASE - SOLVED!!!!

JackyGee24-Oct-11 23:12

JackyGee

24-Oct-11 23:12

很好！！！good，thx

Re: DEBUG to RELEASE

norish3-Jun-09 16:11

norish

3-Jun-09 16:11

This explains the fact.

error LNK2019: unresolved external symbol __imp___invalid_parameter_noinfo

This means program calls invalid_parameter_noinfo() but no symbols around libraries.
If you did not call this function directly, some libraries (guess MFC?) call it.
You can try goole with keyword by invalid_parameter_noinfo.

Re: DEBUG to RELEASE

eli150219793-Jun-09 18:21

eli15021979

3-Jun-09 18:21

Hi norish.

Thanks for your help.

I know that this is my problem...I just can't find the call for invalid_parameter_noinfo.
According to MSDN:

When compiling with /MD, a reference to "func" in your source becomes a reference "__imp__func" in the object since all the run-time is now held within a DLL. If you try to link with the static libraries LIBC.lib or LIBCMT.lib, you will get LNK2001 on __imp__func. If you try to link with MSVCxx.lib when compiling without /MD you will not always get LNK2001, but you will likely have other problems.

All the libraries in the solution,as well as the executable, are being compiled with /Md option(i.e runtime library is a multhi-threaded DLL).
In the linker option I specified the linker to ignore LIBC,LIBCMT and MSVCRT default libraries.
But still,I get those errors...

Anything?

Thanks again,
Best regards,
Eli

Re: DEBUG to RELEASE - SOLVED!!!!!!

eli150219793-Jun-09 19:38

eli15021979

3-Jun-09 19:38

Hi norish,

I removed MSVCRT.lib from default libraries ignore list and it's working just fine.

Thanks again,
Eli

Creating bitmap from scratch using GDI and convert to raw memory data

GingkoBiloba3-Jun-09 3:37

GingkoBiloba

3-Jun-09 3:37

Hello,

Please could somebody help me about the following :

I need a simple way to create a bitmap from scratch in memory, draw something in it using some GDI functions (like LineTo, Polyline or TextOut), and convert the result in a 2D byte array, for using in a home made raster device.

The result needs to have only 2 colors (black and white), although it can be useful to have intermediary grayscale in order to be able to stretch or shrink the bitmap and choose the transition level between black and white.

No file nor any resource nor any window should be involved, everything has to stay in memory. No compression is needed either.

Language is C/C++, *without* MFC.

I tried using CreateCompatibleDC, CreateCompatibleBitmap and GetDIBits, maybe this is still what I have to do, but now unfortunately I get only inconsistent results.

Is there somebody here who already made something like this ?
Best regards,

Gilles

Re: Creating bitmap from scratch using GDI and convert to raw memory data

Stephen Hewitt3-Jun-09 4:16

Stephen Hewitt

3-Jun-09 4:16

The CreateDIBSection[^] function is a good place to start.

Steve

Re: Creating bitmap from scratch using GDI and convert to raw memory data

GingkoBiloba3-Jun-09 5:05

GingkoBiloba

3-Jun-09 5:05

Ok, thank you very much, this seems to give very interesting results.

Gilles

C++ MySQL Column Names

JimBewlay443-Jun-09 3:09

JimBewlay44

3-Jun-09 3:09

Hi Guys

I have a problem which has got me beat and would appreciate any help in either finding a solution or even a 'pointer' to a solution.

The problem is I tend to use a lot of MySQL for various jobs. Normally I would use either PERL or PHP to acces the database and both do a grand job. More recently dusting off my C++ skills I decided to approach the MySQL from a C++ angle. Now I can connect to a MySQL DAtabase, run a query and retreive the data from the query results. What I would like to do is to get Meta data about the fields from the query. Name, datatype that sort of thing. Now this is easy in PERL or PHP but I've tried several methods with c++ and to date no success. What I have found is poorly documented and without the correct parameters the whole thing goes nowhere
There is no specific reason for needing this and no urgency just I would like to see if it can be done. Any help will be warmly appreciated.

Thanks in advance

Re: C++ MySQL Column Names

Stuart Dootson3-Jun-09 3:31

Stuart Dootson

3-Jun-09 3:31

MySQL++ appears to be able to do that[^].

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

C++ Windows Forms DateTime

wael_r3-Jun-09 2:11

wael_r

3-Jun-09 2:11

i'm using window forms application and i'm facing a problem with a variable date_time that hold
a long value 1243930978
I need to convert this number to datetime
Note : when i declare the variable as "CTime sss" it give error undeclared identifier "sss"
any one can help?

Re: C++ Windows Forms DateTime

CPallini3-Jun-09 2:28

CPallini

3-Jun-09 2:28

That's matter for the Managed C++/CLI forum [^]. Isn't that?
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: C++ Windows Forms DateTime

Stuart Dootson3-Jun-09 2:41

Stuart Dootson

3-Jun-09 2:41

wael_r wrote:
a variable date_time that hold
a long value 1243930978
I need to convert this number to datetime

It would probably help you to know the units that 'date_time' represents - is 1243930978 the number of seconds from some epoch? Or what? Do you know?

Oh - and as I've suggested to you before - post to the correct forum, where they know about Managed C++/CLI

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: C++ Windows Forms DateTime

George L. Jackson3-Jun-09 10:36

George L. Jackson

3-Jun-09 10:36

Go to: http://www.codeproject.com/Messages/3066386/Re-Convert-to-datetime-problem.aspx[^]

"We make a living by what we get, we make a life by what we give." --Winston Churchill

How to change the color of CScrollBar in its subclass

bdwzz3-Jun-09 1:33

bdwzz

3-Jun-09 1:33

Beg for help?

Balloon tip in Tray Icon

bhanu_85093-Jun-09 1:32

bhanu_8509

3-Jun-09 1:32

Dear All,

I want to implement balloon tool tip in my system tray. I found one code in Code Project and did it perfectly according to that code. Now I want to handle the balloon tool tip close event or balloon tool tip click event now. I am getting some info from MSDN and other resources but I cannot get it correctly.

Can anyone please help me to do this.

Many thanks in advance.

Re: Balloon tip in Tray Icon

Naveen3-Jun-09 1:47

Naveen

3-Jun-09 1:47

Why don't notification icons get a message when the user clicks the "X" button?
[^]

nave

[OpenedFileFinder] [My Blog]

[Message Deleted]

navneet19853-Jun-09 1:22

navneet1985

3-Jun-09 1:22

[Message Deleted]

Repost

CPallini3-Jun-09 1:50

CPallini

3-Jun-09 1:50

Why don't you provide more information to people that replied to your posts insted of posting it again and again?
Smile | :)

Re: Repost

Hamid_RT3-Jun-09 3:06

Hamid_RT

3-Jun-09 3:06

CPallini wrote:
Why don't you provide more information to people

Why do you want to help me? Is this my problem or you? Big Grin | :-D

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: Repost

CPallini3-Jun-09 3:23

CPallini

3-Jun-09 3:23

Hamid. wrote:
Why do you want to help me?

'Coz I'm bad boy, sir!

Hamid. wrote:
Is this my problem or you?

I am your problem...

Big Grin | :-D

Re: Repost

Michael Schubert3-Jun-09 3:32

Michael Schubert

3-Jun-09 3:32

What drugz are you guys on?

Re: Repost

CPallini3-Jun-09 5:01

CPallini

3-Jun-09 5:01

How can I distinguish?...I'm on drugz, you know... Big Grin | :-D

Re: Repost

Hamid_RT3-Jun-09 3:43

Hamid_RT

3-Jun-09 3:43

CPallini wrote:
I am your problem...

oh yeah that's right I could to find problem! Laugh | :laugh:

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

IDispatch COM Object - returning BSTR incorrectly

Mike the Red3-Jun-09 1:15

Mike the Red

3-Jun-09 1:15

I have created a COM object which implements IDispatch so I can call it from scripting languages.

In the constructor, I'm trying to get the path to the App Data folder and store it in a member variable. I know that this is failing and I'm trying (unsuccessfully) to debug.

Until testing is complete, my object has a method which exposes the HRESULT from the last function call to the scripting language as a string.

[id(10), helpstring("Get last function's HRESULT.")] HRESULT GetHRESULT( [out, retval] BSTR * bsHRES);

This function returns the value of another member variable, BSTR m_HR, which I set using m_HR = OLESTR("Some Text") before returning from any member function.

As part of the constructor debugging process, I am trying to set the BSTR m_HR to the path of the App Data folder:

TCHAR * tcPath = new TCHAR;
HRESULT hres = SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, SHGFP_TYPE_CURRENT, tcPath);
	
if ( FAILED(hres) ) {
	m_HR = OLESTR("SHGetFolderPath failed.");
} else {
	_bstr_t bst = _bstr_t(tcPath);
	
	m_HR = bst.copy();
};
delete tcPath;
return;
<p><font size=-2>
//<shlobj.h> is required for SHGetFolderPath.<br>//<comutil.h> and linking with comsupp.lib is required for _bstr_t.</font>

I double checked the SHGetFolderPath bit from a console application and tcPath contains the path desired.

When I use m_HR = OLESTR("Some Text"), calling GetHRESULT returns "Some Text" properly. With this constructor, however, successive object creations (and calls to GetHRESULT) return, alternately, "Files\Microsoft Visual Studio .NET 2003\SDK\v1.1\Lib\" and NULL. (That's not the App Data path.)

I've been banging my head on this for a couple days now - I'd be grateful for any help ya'll can offer.

MZR

P.S.
My apologies for the non-compilable code, but just the complete constructor is 70ish lines, plus the MIDL file, and the header file.... if you think you can help and need to see the complete code to do so, let me know and I'll happily email you the complete source.

Re: IDispatch COM Object - returning BSTR incorrectly

CPallini3-Jun-09 1:48

CPallini

3-Jun-09 1:48

You say nothing about how bsHRES is set in your method (or am I wrong?).
Smile | :)

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