Re: help.. - C / C++ / MFC Discussion Boards

m_mun17-Dec-08 21:34

17-Dec-08 21:34

Thanks for that.
Can u told me What command will i use for mode less dialog to show. I want to give permission user to interact with the main user Interface.

Re: DoModal creates problem..

Cedric Moonen17-Dec-08 22:41

Cedric Moonen

17-Dec-08 22:41

See here[^]

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: DoModal creates problem..

CPallini17-Dec-08 22:22

CPallini

17-Dec-08 22:22

Shaheen.India wrote:
Have there any option except DoModal() to open Two Dialog at same time?

Yes, see for instance [^].
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]

how to save file in CFileDialog ?

AnithaSubramani17-Dec-08 18:20

AnithaSubramani

17-Dec-08 18:20

Hi All,

Im having the ex.txt file in one variable.I need to save this file into some other location using file browser(browse button).
code is:

CFile f;

	char strFilter[] = { "BCR Files (*.bcr)|*.bcr|All Files (*.*)|*.*||" };

	CFileDialog FileDlg(FALSE, ".bcr", NULL, 0, strFilter);

	if( FileDlg.DoModal() == IDOK )
	{
	f.Open(FileDlg.GetFileName(), CFile::modeCreate | CFile::modeWrite);
		CArchive ar(&f, CArchive::store);
	ar.Close();
	}
	else
		return;

	f.Close();

How to automatically give this ex.txt in File name.

Pls help me....

Thanks & Regards

Anitha

Re: how to save file in CFileDialog ?

Naveen17-Dec-08 18:50

Naveen

17-Dec-08 18:50

AnithaSubramani wrote:
How to automatically give this ex.txt in File name.

Like this?

CFileDialog FileDlg(FALSE, ".bcr", _T("ex.txt"), 0, strFilter);

nave

[OpenedFileFinder] [My Blog]

Re: how to save file in CFileDialog ?

AnithaSubramani17-Dec-08 19:15

AnithaSubramani

17-Dec-08 19:15

I got the result.
Thanks a lot.............

help..

ramina sen17-Dec-08 17:50

ramina sen

17-Dec-08 17:50

while compiling any prgramin vc++ i am getting the same error pls tell me why it is so like this...
MSVCRTD.lib(crtexew.obj) : error LNK2001: unresolved external symbol _WinMain@16

1 unresolved externals]]
Fatal error!!
these r the errors i am always gettings..

Re: help..

L. Madhavan17-Dec-08 18:11

L. Madhavan

17-Dec-08 18:11

Try New Project > Win32 Console Application.

Re: help..

Malli_S17-Dec-08 18:18

Malli_S

17-Dec-08 18:18

Have you changed the project settings to use UNICODE characters ? The linker is looking for a console application, but the project is being compiled as windows application.

-Malli...!

Re: help..

Jijo.Raj17-Dec-08 21:01

Jijo.Raj

17-Dec-08 21:01

Please check this[^] and this[^]. Similar threads which contain solution for your problem.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: help..

aks.17-Dec-08 22:54

aks.

17-Dec-08 22:54

May be you defined UNICODE in project settings and doesn't defined the entry point
If so set Project Settings -> Link -> Output -> Entry-point = wWinMainCRTStartup

aks

Visual C++ 6.0 and Visual Studio 2005

izyani17-Dec-08 14:23

izyani

17-Dec-08 14:23

I currently done with my programming for the CSP. The problem that I’m having is, I have the different result whenever I run the CSP program. FYI, currently I have 2 type of CSP dll, a.dll already been signed by Microsoft where b.dll is the one that I develop(still in the development stage).

Run in Vista Ultimate/Win XP SP3.

Replace the latest advapi32.dll(from one of the sources from Internet)
1. Place the a.dll and testcsp.exe to c:\windows\system32
2. Run command : regsvr32 a.dll  result FAIL
3. Run command : cspSign c a.dll  result PASS
4. Run command : regsvr32 a.dll  result FAIL
5. Run testcsp.exe  result PASS
Question : Is the result PASS because the a.dll already been sent to Microsoft for signing?

Replace the latest advapi32.dll(from one of the sources from Internet)
1. Place the b.dll and testcsp.exe to c:\windows\system32
2. Run command : regsvr32 b.dll  result FAIL
3. Run command : cspSign c b.dll  result PASS
4. Run command : regsvr32 b.dll  result FAIL
5. Run testcsp.exe  result FAIL
Question : Is the result FAIL because the b.dll is not been signing?

Use the original advapi32.dll
1. Place the b.dll and testcsp.exe to c:\windows\system32
2. Run command : regsvr32 b.dll  result FAIL
3. Run command : cspSign c b.dll  result PASS
4. Run command : regsvr32 b.dll  result FAIL
5. Run testcsp.exe  result FAIL
Question : Is the result FAIL because I didn’t replace the advapi32.dll?

Run XP (the same environment during the development of a.dll)
1. Place the b.dll and testcsp.exe to c:\windows\system32
2. Run command : regsvr32 b.dll  result FAIL
3. Run command : cspSign c b.dll  result PASS
4. Run command : regsvr32 b.dll  result FAIL
5. Run testcsp.exe  result PASS
Question : Why both of the b.dll is PASS?

FYI, a.dll was compiled using Visual 6.0 and b.dll was compiled using Visual Studio 2005. Is the compiler cause the different result of during the testing?

Thank You.

VC++ 2008 Command line builder

pratap198017-Dec-08 8:24

pratap1980

17-Dec-08 8:24

Hi All,

I am using msdev.exe to build my project in VC++ 6.0. VS2008 Professional dosend have msdev.
this is how i am using in 6.0

msdev PACERField.dsw /make "0BuildAll - Release" %1

What should i use in VS2008 to build my project in similar fashion.

Thanks

Re: VC++ 2008 Command line builder

led mike17-Dec-08 9:17

led mike

17-Dec-08 9:17

pratap1980 wrote:
What should i use in VS2008 to build my project in similar fashion.

I suggest using the documentation[^]

led mike

Re: VC++ 2008 Command line builder

Jijo.Raj17-Dec-08 9:42

Jijo.Raj

17-Dec-08 9:42

msdev.exe - executable is the IDE of Visual Studio 6.0, which supports command line options to build project, as well. From Visual Studio 2003 onwards, the IDE executable changed its name to devenv.exe. That's why you are not able to evoke msdev by installing Visual Studio 2008. Well, check this article[^] about how to build project via command line by using devenv.exe.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Using CRecordset with foreign keys

mevatron117-Dec-08 8:11

mevatron1

17-Dec-08 8:11

Hi,

I'm fairly new to database programming, but I have been using MFC and C++ for a while. So, here is the problem I'm having.

Here is a basic description of the two tables I'm using.
PersonTable
PersonId, INT, AUTO_INCREMENT (Primary Key)
Name, VARCHAR(32)

ImageTable
ImageId, INT, AUTO_INCREMENT (Primary Key)
ImageBlob, LARGE_BLOB
PersonId, INT (Foreign Key)

Basically, I want to insert the person record into the person table, next insert the image for that person into the image table, and finally link the ImageTable.PersonId to the PersonTable.PersonId.

So, here is the code I'm currently using

<br />
personTable.AddNew();<br />
personTable.m_Name = "Joe";<br />
personTable.Update();<br />
<br />
personTable.Requery();<br />
personTable.MoveLast();<br />
<br />
long personId_ForeignKey = personTable.m_PersonId;<br />
<br />
//... later in the image table insert code<br />
imageTable.AddNew();<br />
// set the image blob here<br />
imageTable.m_PersonId = personId_ForeignKey;<br />
imageTable.Update();

This works, but what concerns me is that this isn't safe for concurrent inserts. If multiple clients are inserting into the database, then I could get the wrong foreign key when I call "personTable.MoveLast()." Is there a better way to do this? Thanks!

-Will

Re: Using CRecordset with foreign keys

led mike17-Dec-08 9:13

led mike

17-Dec-08 9:13

mevatron1 wrote:
Is there a better way to do this?

Yes, several, for example Stored Procedures[^]

led mike

Re: Using CRecordset with foreign keys

mevatron117-Dec-08 11:16

mevatron1

17-Dec-08 11:16

Do you have an example of a stored procedure to do that for my simple tables? Will the imageBlob be a problem for the stored procedure?

-Will

Re: Using CRecordset with foreign keys

led mike18-Dec-08 6:53

led mike

18-Dec-08 6:53

mevatron1 wrote:
Do you have an example of a stored procedure to do that for my simple tables?

Will, I also saw your reply to David. While there might be an example identical to your scenario I am not aware of one. That said there is certainly much information about stored procedures. They can be product specific so make sure you use the documentation and tutorials for the database product you are working with. Also there is a Database forum here at code project.

I strongly urge you to take some time learning about database programming. Like most subjects in software development, there are choices that come with benefits and detractors and not knowing the details of the subject (database development ) can lead to undesirable results.

led mike

Re: Using CRecordset with foreign keys

mevatron118-Dec-08 7:17

mevatron1

18-Dec-08 7:17

Mike, Thank you very much for your advice. I will definitely continue to look into stored procedures to try to learn how to solve this problem.

-Will

Re: Using CRecordset with foreign keys

David Crow17-Dec-08 10:30

David Crow

17-Dec-08 10:30

What about wrapping the code in a transaction, like:

personTable.m_pDatabase->BeginTrans();
 
personTable.AddNew();
personTable.m_Name = "Joe";
personTable.Update();
 
personTable.Requery();
personTable.MoveLast();
 
personTable.m_pDatabase->CommitTrans();

I'm not sure if it's optimal, however.

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

Re: Using CRecordset with foreign keys

mevatron117-Dec-08 11:16

mevatron1

17-Dec-08 11:16

I can certainly give this a try! Thanks for the reply!

-Will

Re: Using CRecordset with foreign keys

mevatron117-Dec-08 11:48

mevatron1

17-Dec-08 11:48

Sadly, this doesn't work.

I set a breakpoint on the personTable.Requery() line

personTable.m_pDatabase->BeginTrans();
 
personTable.AddNew();
personTable.m_Name = "Joe";
personTable.Update(); // <-- This inserts a new key == 1
 
personTable.Requery(); // <-- placed breakpoint here
personTable.MoveLast();
 
personTable.m_pDatabase->CommitTrans();

I then ran another instance of the program to let it run to completion first, so I ended up with the imageTable.PersonId == 2 for both rows in the imageTable. Thanks for your time!

-Will

About USB ports

ameyakoshti17-Dec-08 7:09

ameyakoshti

17-Dec-08 7:09

Few months back i had asked about how to disable USB ports thru vc++.
and i got replies saying disable it through registry.

one thing i forgot to ask.

if i disable the USB post through registry then will windows still recognise the USB ports??
and will it still send some power to it?
and is there any way to control the power to it?

basically m making a project on power management.
can someone help me out with it?

i need help on accessing BIOS from windows...

Re: About USB ports

Jonathan Davies17-Dec-08 7:33

Jonathan Davies

17-Dec-08 7:33

Hi,
Have a look at: http://msdn.microsoft.com/en-us/library/ms791235.aspx This is part of the setup api which I recently used to find the names of devices (such as usb ports). The documentation on this method mentions enabling/disabling. It seems cleaner to use these methods rather than access the registry directly. Have a look at http://www.codeproject.com/KB/wtl/DeviceInformation.aspx which is code I used to see the devices and might help. It does need WTL to compile though.

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