C / C++ / MFC Discussion Boards

Alex Cutovoi19-Jan-07 5:01

19-Jan-07 5:01

Hi fellows

Someone tells me that the best way to send an object from a window to another is by serialization. How can I do this? I'm very new in this subject....
Someone have a sugggestion for me?

Thanks a lot

Re: Serializing an object

David Crow19-Jan-07 5:08

David Crow

19-Jan-07 5:08

Alex Cutovoi wrote:
...send an object from a window to another...

What exactly are you wanting to send?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: Serializing an object

Alex Cutovoi19-Jan-07 5:53

Alex Cutovoi

19-Jan-07 5:53

I have 2 windows. In these windows I have a class that I create. This class is exactly the same in both windows. I create the object and I need to send this object from one window to the another window to use it. Actually I'm using unsuccessfully WM_COPYDATA message to send the object. But this is written is MSDN:
"The data being passed must not contain pointers or other references to objects not accessible to the application receiving the data."
Because this, some data in my object are empty.
So, someone suggested me to use serialization, but I'm very very new in this topic...

Re: Serializing an object

David Crow19-Jan-07 6:03

David Crow

19-Jan-07 6:03

Alex Cutovoi wrote:
Actually I'm using unsuccessfully WM_COPYDATA message to send the object. But this is written is MSDN:
"The data being passed must not contain pointers or other references to objects not accessible to the application receiving the data."
Because this, some data in my object are empty.

See here and here.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: Serializing an object

Alex Cutovoi23-Jan-07 1:34

Alex Cutovoi

23-Jan-07 1:34

Thanks man, it seems to be very useful for me. Thanks

How can i solve the mapping mode problem?

Murugan k19-Jan-07 3:25

Murugan k

19-Jan-07 3:25

Hi All,

Which map mode would be support for all type of printers? like compaq,hp officejet,cannon,......IF you know , let me know immediately..

Thankx in Advance

Windows Message Handling

Chibi Maruko S19-Jan-07 3:18

Chibi Maruko S

19-Jan-07 3:18

One of the thread in my application has consumed some windows messages which are aimed to my controls (my own defined control).

Can anyone give me a suggestion what I should do to solve the problem?

Re: Windows Message Handling

Roger Stoltz19-Jan-07 3:23

Roger Stoltz

19-Jan-07 3:23

What kind of messages would that be?
User defined such as "WM_USER + X" or "WM_APP + 1"? If so: read this article[^] by Joe Newcomer.

Hope this helps
--
Roger

"It's supposed to be hard, otherwise anybody could do it!" - selfquote

Re: Windows Message Handling

Chibi Maruko S19-Jan-07 5:00

Chibi Maruko S

19-Jan-07 5:00

Thanks Roger. I would read the article.

It is the standard keydown message. I select an item in my list control, then pressed the arrow key up or down, nothing happened in the list control, the selected item has not been changed. I used Spy++ to check and found out that the list control has never recied the key up och down message. The thread which holds the dialog window has recieved the messages, it seems that the thread has consumed the message and never send it to the control. I just wonder why and how I can solve the problem.

BR /Chibi

Re: Windows Message Handling

Mark Salsbery19-Jan-07 5:35

Mark Salsbery

19-Jan-07 5:35

What does your thread's message loop look like?

CRecordset

Bravoone_200619-Jan-07 2:25

Bravoone_2006

19-Jan-07 2:25

How can i retrieve GetRecordCount into CString?
i want to retrieve the number of records!
i have : CDatabase_Earth pEarth;

and i want this : pEarth.GetRecordCount();

into this

m_text.SetWindowText(.......);

Smile | :)

Bravoone

Re: CRecordset

David Crow19-Jan-07 2:32

David Crow

19-Jan-07 2:32

Bravoone_2006 wrote:
How can i retrieve GetRecordCount into CString?

Use "SELECT COUNT(*) FROM table_name" as your SQL statement.

See here for more.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: CRecordset

hairy_hats19-Jan-07 2:43

hairy_hats

19-Jan-07 2:43

Why not get it into an int, then use CString::Format() to get it into the CString?

CAnimateCtrl

Bravoone_200619-Jan-07 2:03

Bravoone_2006

19-Jan-07 2:03

Where can i find .avi for my program?
i make a CDialog with CAnimateCtrl but i need something like websearch.avi, i need more ... where can i find something like that !?
Smile | :)

Bravoone

Re: CAnimateCtrl

David Crow19-Jan-07 2:34

David Crow

19-Jan-07 2:34

Have you tried this?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

problem building OpenH323

Kiran Pinjala19-Jan-07 2:01

Kiran Pinjala

19-Jan-07 2:01

I have downloaded OpenH323 source and trying to build it but it has shown an error stating that

fatal error C1083: Cannot open include file: 'ptlib.h': No such file or directory
Error executing cl.exe.

I could not find the solution even in goolgle. Is anybody out there who knows the solution.Please help.
Thank you.

KIRAN PINJARLA

Re: problem building OpenH323

Kiran Pinjala19-Jan-07 2:35

Kiran Pinjala

19-Jan-07 2:35

I found the solution that i have to download pwlib.zip and include file from it.
Now i have to compile pwlib first. While building this i got this error.

Configuring Build Options
'.\msvc6chk' is not recognized as an internal or external command,
operable program or batch file.
Error executing c:\winnt\system32\cmd.exe.

Can anyone help me?
Thank you.

KIRAN PINJARLA

Re: problem building OpenH323

David Crow19-Jan-07 2:39

David Crow

19-Jan-07 2:39

See here for building PWLIB.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: problem building OpenH323

Kiran Pinjala19-Jan-07 3:11

Kiran Pinjala

19-Jan-07 3:11

Thankyou David. I have done as it says in this doc. But stil i am getting the same error

Configuring Build Options
'.\msvc6chk' is not recognized as an internal or external command,
operable program or batch file.
Error executing c:\winnt\system32\cmd.exe.

I have downloaded from http://www.voxgratia.org/releases/msvc6chk.zip and i did run it and upgraded. But still missed something i could not find.
can you please help me.

KIRAN PINJARLA

Re: problem building OpenH323

David Crow19-Jan-07 3:45

David Crow

19-Jan-07 3:45

kiran.pinjarla wrote:
'.\msvc6chk' is not recognized as an internal or external command,

Is it present on your machine? You can't run something that doesn't exist?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: problem building OpenH323 [modified]

Kiran Pinjala19-Jan-07 17:30

Kiran Pinjala

19-Jan-07 17:30

I have downloaded msvc6chk.exe. Now where should it be present to be recognized by my application while building? I placed it in the workspace.I think i am missing a small thing which to be done but sometimes...u know...
Thank you.

-- modified at 0:12 Saturday 20th January, 2007

KIRAN PINJARLA

Re: problem building OpenH323

David Crow22-Jan-07 3:13

David Crow

22-Jan-07 3:13

kiran.pinjarla wrote:
Now where should it be present to be recognized by my application while building?

In the same location as other EXEs that are used by the build process, or any other folder that is part of the PATH environment variable.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: problem building OpenH323

David Crow19-Jan-07 2:36

David Crow

19-Jan-07 2:36

kiran.pinjarla wrote:
fatal error C1083: Cannot open include file: 'ptlib.h': No such file or directory

Have you verified that the file exists?

kiran.pinjarla wrote:
I could not find the solution even in goolgle.

So how did you miss this?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

usb memory stick is not disabed

pavan_sw19-Jan-07 1:50

pavan_sw

19-Jan-07 1:50

Hi all,
In my project we need to disable memory stick as soon as it is connected to the system. For doing this we are using SetupDiXXX win32 api's.
The problem with this is not disabling the memory stick first time which has never connected to the system before. From second time insetion onwards it is successfully disabling the memory stick.

iam using the following code to disable memory stick....

spPropChangeParams.ClassInstallHeader.cbSize = sizeof(SP_CLASSINSTALL_HEADER);
spPropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;
spPropChangeParams.Scope = DICS_FLAG_GLOBAL;
spPropChangeParams.StateChange = DICS_DISABLE;
spPropChangeParams.HwProfile = 0;

if ( !SetupDiSetClassInstallParams(hDevInfo, &spDevInfoData,(SP_CLASSINSTALL_HEADER*)&spPropChangeParams, sizeof(spPropChangeParams)) );
else if ( !SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, hDevInfo, &spDevInfoData) ) ;

Any help on this is greatly appreciated..
Thanks in advance

---Pavan

Locale problem with DDX conversion

hairy_hats19-Jan-07 1:25

hairy_hats

19-Jan-07 1:25

Hi all,

I've got an MFC VC6 project written & compiled for English which is now being used in Germany, and is exhibiting some odd behaviour regarding edit boxes and DDX. I'm using these validating edit boxes, which correctly take into account the locale and accept commas as a decimal point. However, the underlying MFC code isn't taking into account the locale, and is throwing up a validation error when performing DDX to convert the edit box text to a float variable.

Any suggestions as to how I can make MFC use the locale of the OS so that it doesn't throw up this erroneous validation error?

Thanks.

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