C / C++ / MFC Discussion Boards

Re: Bitmap inserted to dialog

hoangtubuon9-May-05 23:19

hoangtubuon

9-May-05 23:19

you should UPDATEDATA(FALSE)before insert.luck. Sleepy | :zzz:

Re: Bitmap inserted to dialog

David Crow10-May-05 2:23

David Crow

10-May-05 2:23

Aqueel wrote:
When i insert a bitmap to dialog, the buttons and edit boxes behind that bitmap disappears.

What would you expect to happen when a bitmap is placed over the other controls? Explain in more detail what you are trying to accomplish and maybe a more suitable solution can be offered.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Bitmap inserted to dialog

Aqueel10-May-05 18:06

Aqueel

10-May-05 18:06

Hello
I want to insert a bitmap on dialog as background image so that all other controls are placed on this image. When i try to do this i mean when i put a bitmap on dialog, all controls that should come over the image go behind that image and are not shown in output. How can i make them visible?

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Re: Bitmap inserted to dialog

narendra_ b10-May-05 4:03

narendra_ b

10-May-05 4:03

U got the solution in MSDN forum. right?? Big Grin | :-D

VC++ programmer

Re: Bitmap inserted to dialog

Aqueel10-May-05 19:50

Aqueel

10-May-05 19:50

No Sir
There is no responce from MSDN forum yet.

We Believe in Excellence

Re: Bitmap inserted to dialog

David Crow11-May-05 2:27

David Crow

11-May-05 2:27

There is no MSDN forum. If you are referring to the microsoft.public.vc.mfc newsgroup, you received two responses within an hour after your post. One of them referred you to here.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

C++ with ms.access database

_indra_m9-May-05 21:22

_indra_m

9-May-05 21:22

Hello,

Can you help me? I have some questions about C++.
Right now I learn how to write code in C++, I am a newbie.

1. I make a simple application that needs binding data from Microsoft access to datagrid using Microsoft jet driver, can you make a simple function for it or maybe a sample?
2. I also want to make the application that can update the dataset and database; can you give me another sample of it?
3. Can you make a sample for adding data from textbox and updating it to database?

I hope it’s not too much, I need your help so I can learn write the code from you. Thanks.

Regards,
Indra.

Re: C++ with ms.access database

Aqueel9-May-05 22:10

Aqueel

9-May-05 22:10

First try to study what is ODBC.

We Believe in Excellence

Re: C++ with ms.access database

Yulianto.9-May-05 22:58

Yulianto.

9-May-05 22:58

Have you look here[^]?

<italic>Work hard, Work effectively.

Re: C++ with ms.access database

narendra_ b10-May-05 4:08

narendra_ b

10-May-05 4:08

go through the ADO library. It is COM component implemented some easy to use interfaces. If u dont know how to use the com components, first learn that. becasue, most of the library is coming with the com technology.

VC++ programmer

Detecting file association changes and getting new icon

Defenestration9-May-05 20:18

Defenestration

9-May-05 20:18

I'm trying to write a simple file manager and want to be able to detect changes to file associations, and then get the new/changed icons. Getting the notification isn't so hard, but the it's what to do when
I get it that is the problem. I get icons from the system by calling SHGetFileInfo() and unfortunately this function seems to cache the icon indexes in the system image list for a given filetype. So even if the icon for say, mp3 files, has been changed by the user while my application is running, SHGetFileInfo() still reports the original icon index.

Any ideas ?

How to chage attributes for a directory?

hfrmobile9-May-05 19:50

hfrmobile

9-May-05 19:50

Changing file attributes for a file is no problem (e.g. using the SetFileAttributes() function).

Is there an equivalent for doing this for a directory?

Thanks in advance, hfr
Sigh | :sigh:

PS: if using SetFileAttributes() for a directory I get a HRESULT of 2 which means: file not found

Re: How to chage attributes for a directory?

David Crow10-May-05 2:19

David Crow

10-May-05 2:19

This works for me:

if (! SetFileAttributes("c:\\ResOrg", FILE_ATTRIBUTE_READONLY))
{
    DWORD dwError = GetLastError();
}

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: How to chage attributes for a directory?

hfrmobile10-May-05 3:22

hfrmobile

10-May-05 3:22

Hi thanks for your reply!

Sorry, I was a bit inaccurately...

I am using RAPI version of SetFileAttributes() --> CeSetFileAttributes() because I need to do this on a remote device (on a Pocket PC running Windows CE)

It seems that there is a difference between SetFileAttributes() and CeSetFileAttributes().

CeSetFileAttributes() works fine for files but not for directories. The only thing I have found about this issue is that the .NET Compact Framework does not support changing attributes on directories... (files are supported).

Since the project is written in VC++ this should not matter...

CeSetFileAttributes() always returns false and CeGetLastError() returns 0x2 (file not found...)

Any idea why CeSetFileAttributes() does not work for directories?

thx

D'Oh! | :doh:

Re: How to chage attributes for a directory?

David Crow10-May-05 4:46

David Crow

10-May-05 4:46

rubicon_hfr wrote:
Any idea why CeSetFileAttributes() does not work for directories?

No. I've no experience with CE or the .Net framework. What folder attribute are you wanting to alter? If I am reading the documentation correctly, it states that an application cannot change the attributes of a directory in the RAM file system. Does that apply to your situation?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: How to chage attributes for a directory?

hfrmobile10-May-05 5:08

hfrmobile

10-May-05 5:08

I assume you mean ROM, not RAM?

Of course I do not try to alter attributes of a directory which is located in ROM. In this case I'll expect a "access denied" error...

I'd like to change directory's attributes which are located in RAM or on a storage card.

I can delete or rename the directories but I cannot change the "r" or "h" attribute...

Re: How to chage attributes for a directory?

David Crow10-May-05 5:15

David Crow

10-May-05 5:15

rubicon_hfr wrote:
I assume you mean ROM, not RAM?

No, RAM was the intended word. See here.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: How to chage attributes for a directory?

hfrmobile10-May-05 9:05

hfrmobile

10-May-05 9:05

Very interesting... thx!

This code (see comments) demonstrates what happens:

<br />
CeRapiInit();<br />
<br />
// "\\CF-Card\\Temp"<br />
// "\\SD-MMCard\\Temp"<br />
// "\\Temp\\Test"<br />
CString strFileName = "\\SD-MMCard\\Temp";<br />
<br />
wchar_t wcFileName[256];<br />
mbstowcs(wcFileName, strFileName, strFileName.GetLength()+1);<br />
<br />
DWORD dwAttributes = CeGetFileAttributes(wcFileName); // works always<br />
HRESULT hr = CeGetLastError();<br />
<br />
dwAttributes |= FILE_ATTRIBUTE_READONLY;<br />
<br />
// hr = 0x00000002 "The system cannot find the file specified." if dir is in RAM<br />
// hr = 0x00000005 "Access is denied." if dir is on storage card<br />
// this problems only occur using RAPI<br />
CeSetFileAttributes(wcFileName, dwAttributes);<br />
hr = CeGetLastError();<br />
<br />
CeRapiUninit();<br />

RAM: "The system cannot find the file specified." (ok, since MSDN says it is not supported

Storage Cards: "Access is denied." (also not supported? Cry | :((

)

Re: How to chage attributes for a directory?

hfrmobile12-May-05 21:00

hfrmobile

12-May-05 21:00

FYI: Conclusion - setting file attributes for directories

I tried something and here are the results:

CeGetFileAttributes()
Worked for all devices.

CeSetFileAttributes()
Not worked on a PPC2002 device (Pocket PC)
Worked on a WM2003 device (Smartphone)

So it seems that this is only supported for devices using WM2003 or higner...

DTW

Jaymahinda9-May-05 18:39

Jaymahinda

9-May-05 18:39

I want to find a working Dynamic time warping algorithm in c++ to compare voice.

about "delete"

simon wan9-May-05 15:56

simon wan

9-May-05 15:56

......
char* p= new char[100];
...
//should I use
// delete p;
//or
// delete[] p;

Re: about "delete"

PJ Arends9-May-05 16:09

PJ Arends

9-May-05 16:09

delete[]

new -> delete
new[] -> delete[]

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

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Re: about "delete"

Jörgen Sigvardsson10-May-05 1:46

Jörgen Sigvardsson

10-May-05 1:46

I'd like to stress PJ's point that you should *always* use delete [] with new []. Otherwise strange things will happen. Trust me. Smile | :)

--
Schni Schna Schnappi! Schnappi Schnappi Schnapp!

Re: about "delete"

Nemanja Trifunovic10-May-05 3:58

Nemanja Trifunovic

10-May-05 3:58

I'd suggest he (almost) never uses new[] and delete[] and make use of container classes instead. Here is why[^]

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Re: about "delete"

hfrmobile12-May-05 21:05

hfrmobile

12-May-05 21:05

I allways used delete regardless if used new or new[]

...it worked fine (and I see no reason why it should not...)

<br />
byte buffer[4] = new byte[4]; // 4 bytes<br />
DWORD dw4Bytes = new DWORD[1]; // 4 bytes<br />
<br />
...<br />
<br />
delete buffer;  // releases 4 bytes<br />
delete dw4Bytes; // releases 4 bytes<br />

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