PostThreadMessage - C / C++ / MFC Discussion Boards

13-Jun-02 14:27

Hi,

I just wondered if anybody knew of any good example source code out there for file packers. I essentially just want to write a program that packs various files into one .dat (or whatever) file, which can then be unpacked and repacked on the fly.

Many thanks for any links/suggestions,
Keith

Re: File packers

Ravi Bhavnani13-Jun-02 17:53

Ravi Bhavnani

13-Jun-02 17:53

Keith,

See these articles:

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Re: File packers

Nish Nishant13-Jun-02 18:29

Nish Nishant

13-Jun-02 18:29

I have a class here that packs multiple files into a single file. And allows you to get back the files from the archive. No compression though. It's called CFileTar but is not to be confused with the Unix tar program or format.

http://www.codeproject.com/useritems/cfiletar01.asp

Regards
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Buy it, read it and admire me Smile | :)

How can I get the version of RICHED20.DLL?

Oz Ben Eliezer13-Jun-02 14:08

Oz Ben Eliezer

13-Jun-02 14:08

Hey,

I need to programatically retrieve the exact file version number of RICHED20.DLL (such as "5.30.23.1205") and the control version (2, 2.1 or 3)

How can I do that?
I couldn't find the solution in MSDN Library.

Thanks in advance.

Re: How can I get the version of RICHED20.DLL?

James R. Twine13-Jun-02 17:53

James R. Twine

13-Jun-02 17:53

Have you tried loading the VERSIONINFO stuff from the DLL's resources?

Peace!

-=- James.
"Some People Know How To Drive, Others Just Know How To Operate A Car."
(Try Check Favorites Sometime!)

String Table Resource

Atlence13-Jun-02 13:51

Atlence

13-Jun-02 13:51

Hi!

I would like to insert a copy of a string table resource into a VC++ project like i've done with several dialog box resources. But i can't find the input text "Condition" in the resource properties.

Is it possible to make a copy of a string table resource with conditions? Confused | :confused:

Thks in advance!
Appstmd

Re: String Table Resource

James R. Twine13-Jun-02 17:54

James R. Twine

13-Jun-02 17:54

Why does that prevent you from copying the string table itself, or entries within it? You should be able to cut-n-paste between string tables freely.

Peace!

-=- James.
"Some People Know How To Drive, Others Just Know How To Operate A Car."
(Try Check Favorites Sometime!)

PostThreadMessage

wilche13-Jun-02 13:34

wilche

13-Jun-02 13:34

Recently, I wrote on message board, that I had problem PostThreadMessage.
It did not post to the thread as expected, but GetLastError did not indicate that an error has occurred.

The bug disappear when I used:

Sleep(20);

to force it sleep for 20 ms. But when I tested it using larger test data, the same problem occurred, even more serious then before. Furthermore the performance eroded to point that it was better off not using threads.
In both cases, resources was critically reduced.

The "apparent" culprit was that the low resources. As the rate messages entering the message queue was higher than it's removal through processing, net increase in queue. Each message can contain significant amounts of data (up to 20k) and hence low resources. I have checked carefully there is no memory leakage so this was the only conclusion I could draw.

Closer study also showed that SendMessage also failed under these circumstances.

What I want to ask,
1, Has anyone else had this sort of problem?
2, Is my conclusion correct?
3, Is there a fix for this?

Thank you! Any reply is greatly appreciated

Kind regards,
wilche
Smile | :)

The more simple things are, the more complex is the way it works.
The more complex things are, there is probably a simpler solution.

Re: PostThreadMessage

Rama Krishna Vavilala13-Jun-02 14:45

Rama Krishna Vavilala

13-Jun-02 14:45

wilche wrote:
PostThreadMessage.
It did not post to the thread as expected, but GetLastError did not indicate that an error has occurred.

Does the thread in question has it's message queue created. That is does it call any of GetMessage, PeekMessage etc. functions before you call PostThreadMessage from other threads. That might be the problem.

Re: PostThreadMessage

wilche13-Jun-02 16:36

wilche

13-Jun-02 16:36

Sorry my fault,

I have made sure that the message queue has been created properly.

This is because the messages inside the queue were correctly being processed.

Thanks for picking this up!

wilche

link error

13-Jun-02 12:44

Hi,

this was a release build after the code had successfully compiled in debug mode .

nafxcw.lib(winctrl5.obj) : error LNK2005: "public: virtual struct CRuntimeClass * __thiscall CDateTimeCtrl::GetRuntimeClass(void)const " (?GetRuntimeClass@CDateTimeCtrl@@UBEPAUCRuntimeClass@@XZ) already defined in TreeOptionsCtrl.obj

nafxcw.lib(winctrl5.obj) : error LNK2005: "public: static struct CRuntimeClass const  CDateTimeCtrl::classCDateTimeCtrl" (?classCDateTimeCtrl@CDateTimeCtrl@@2UCRuntimeClass@@B) already defined in TreeOptionsCtrl.obj

Do you have an idea what actually the problem is?

Thanks

R.

Re: link error

Rama Krishna Vavilala13-Jun-02 12:52

Rama Krishna Vavilala

13-Jun-02 12:52

How does TreeOptionsControl.cpp look like. Does it by any chance has a definition of CDateTimeCtrl like IMPLEMENT_DYNAMIC(CDateTimeCtrl) or in any of the headers it includes?

Re: link error

13-Jun-02 12:57

TreeOptionsCtrl is from this site (PJ Naughter).
It has definitely IMPLEMENT_DYNAMIC(CDateTimeCtrl, CWnd) in TreeOptionsCtrl.cpp

10x

13-Jun-02 13:00

...and compiles fine without.
Thanks very much

Open files by double clicking

Sun666613-Jun-02 10:48

Sun6666

13-Jun-02 10:48

Hi,

Does anybody know how to associate some file types with a specific application so I can open those files by double clicking them from the Explorer? Can I use the following functions?

EnableShellOpen();
RegisterShellFileTypes(true);

Even if these two functions can be used for this, how can I add my file types to the CSingleDocTemplate(since I am using Single document in my application)?

Thanks!

STL valarray usage

David Leikis13-Jun-02 10:23

David Leikis

13-Jun-02 10:23

I am attempting to use the valarray STL in an MFC app, but I get a compiler error immediately from within the valarray include. I am copying the code sample provided on MSDN at the following location:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcstdlib/html/vclrf_valarray_pow.asp

In particular, the compiler states that "there are not enough parameters in the Min/Max macros"; with just the include file, no code at all! So, MFC can't even build the include!

I am trying to build an RMS average function for a number of points and it would be great if I could use the speed optimization built into the valarray.

If I build the example code from above within a console app, it works well without any errors and it functions also....

Is there something within MFC that is predefining these macros that interferes with the valarray include?

Can this be done as a library function so that I could reference the class that I am attempting to build?

Thanks in advance for any help,
Dave Leikis Confused | :confused:

Re: STL valarray usage

Joaquín M López Muñoz13-Jun-02 12:20

Joaquín M López Muñoz

13-Jun-02 12:20

I guess this is a problem having to do with <windows.h> and the STL headers defining differently min and max. Try #undefining min and max before including the header for valarray.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

How do i create a dialog from a resource file where the parent window can't be used untill the dialog has been closed?

redeemer13-Jun-02 9:20

redeemer

13-Jun-02 9:20

thanks

Re: How do i create a dialog from a resource file where the parent window can't be used untill the dialog has been closed? Ans: you can set the parent window as parent to the dialog or disable te window and enalbe it when the dialog is closed

loket13-Jun-02 9:43

loket

13-Jun-02 9:43

redeemer13-Jun-02 9:39

redeemer

13-Jun-02 9:39

How do i set the parent window as parent to the dialog? In the CreateDialog, i give it a parent window, but i can still use the parent window even when the dialog isn't closed.

<b></b>

Rama Krishna Vavilala13-Jun-02 10:10

Rama Krishna Vavilala

13-Jun-02 10:10

Now this is turning into a game OMG | :OMG:

Marc Richarme13-Jun-02 13:13

Marc Richarme

13-Jun-02 13:13

Rama Krishna wrote:
Now this is turning into a game

Yup.. and that message wasn't easy to reply to. Poke tongue | ;-P

Cheers,
Marc
_{Click to see my *real* signature}

Re: How do i create a dialog from a resource file where the parent window can't be used untill the dialog has been closed?

Tim Smith13-Jun-02 9:43

Tim Smith

13-Jun-02 9:43

thanks

Thanks for what?

Or are you trying to ask a question?

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

Re: How do i create a dialog from a resource file where the parent window can't be used untill the dialog has been closed?

redeemer13-Jun-02 10:06

redeemer

13-Jun-02 10:06

Thanks for reading my thread.

Passing an object from VB to VC++ ActiveX control

13-Jun-02 8:36

Hi,
I have a Visual C++ ActiveX control and a VB project who is using it and I would like to know how I can pass an object from the control to VB.

The VC++ control "knows" that object from #import but I cannot write it as a parameter type because it's not a COM standard.
I have used a VARIANT type to pass the object to the Control from VB and it seems to work, but I just can't figure out how to make it work the other way around.

Any help would be appreciated.

Thanks,

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