C / C++ / MFC

Re: MFC PreTranslatedMessage() ... opening dialog

11-Jul-05 3:26

I'm not sure exactly what it is that you are trying to do, but with few exceptions, PreTranslateMessage() is not the place to be doing it.

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

majeric12-Jul-05 0:39

majeric

12-Jul-05 0:39

hi tnx you for answer, well iam trying to load Popup menu on right click of mouse. if i use OnRButtonDown(...) it wont open in one click u need to click 2 time then it open but that i dont want. In PreTranslatedMessage it open in first time but then when click that popup menu it open dialog and when closing it it crash all. OK if u say that isnt the right way will check for other thanks you.

One more thing... that OnRButtonDown(...) when i click with mouse in CList array that List view it dont perceives that i have clicket there it perceives only if i clicked in main dialog. Frown | :(

Re: MFC PreTranslatedMessage() ... opening dialog

David Crow12-Jul-05 3:27

12-Jul-05 3:27

majeric wrote:
hi tnx you for answer, well iam trying to load Popup menu on right click of mouse.

This is a very common thing to do. Look for examples using TrackPopupMenu().

majeric wrote:
when i click with mouse in CList array...

A CList is simply a collection of objects and thus does not have an interface in which you can click. Perhaps you meant a CListView?

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

Need Help

sroberts8211-Jul-05 2:39

sroberts82

11-Jul-05 2:39

What does this line mean

if (((msg->eventType-FRAME_EVENT)>>12 & 0xf )==0)

eventType could be say 0xA002
and FRAME_EVENT is 0xA000

in partiualr I dont know what >> means.

Sorry to be thick.

Re: Need Help

David Crow11-Jul-05 3:06

using a MFC DLL in C++ .Net

11-Jul-05 3:06

It is four statements in one.

msg->eventType-FRAME_EVENT

This subtracts FRAME_EVENT from msg->eventType.

>>12

This shifts the bits from the above sum to the right 12 places.

& 0xf

This is the bitwise AND operator. 0xf is 15 in base-10.

==0

This compares the result of the above AND operation to 0.

Does that help?

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

Re: Need Help

sroberts8211-Jul-05 3:21

sroberts82

11-Jul-05 3:21

Cheers, thats bang on, it was the bit shift I wasnt sure of

Anonymous11-Jul-05 1:47

Anonymous

11-Jul-05 1:47

Hi,

I have to use a MFC C++ DLL (unmanaged of course) in a C++ .Net project.
I have problems to do that. I've created a C++ .Net project and includes the MFC DLL.
My problems comes as soon as I call a method (ctor, dtor or method) from the MFC DLL.
I've got this kind of error :

error LNK2001: unresolved external symbol "public: __thiscall toto::toto(void)" (??0toto@@$$FQAE@XZ)
fatal error LNK1120: 2 unresolved externals

toto is the unmanaged class from the MFC DLL.
I call it in the C++ .Net class like this :

toto *p;
p = new toto();

(the first line compile but not the second)

Thanks,

Denis (denissohet AT hotmail DOT com

toxcct11-Jul-05 1:59

11-Jul-05 1:59

hi,

i know i'm a bit off topic, but i cannot understand why so many people try to use managed code in unmanaged projects (and vice versa)...

i consider .NET has been designed to be portable, that means the code don't depend on the system it is running on, but uses only functions from the framework.

so, any explainations ? OMG | :OMG:

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Anonymous11-Jul-05 2:17

Anonymous

11-Jul-05 2:17

I need to use in .Net code old MFC DLL...

I don't want to re-write the DLL in .Net, it will take too much time! And in my company we have a lot of MFC DLL we use !

toxcct11-Jul-05 5:33

11-Jul-05 5:33

and what will happend when one of your customers will try your code on a MAC which have .NET framework installed ??

nothing. it will just not execute...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Flash.ocx and massive memory issues

Anonymous11-Jul-05 10:26

Anonymous

11-Jul-05 10:26

Not a problem, this soft is for pc configured by the company and we install everythink we need!

Please, help me or don't write ...

thks

RobotIntestines11-Jul-05 1:38

RobotIntestines

11-Jul-05 1:38

I have embedded an swf file into a C++?MFC dialog. Everything is great, except that the program uses a massive amount of memory that builds up over time.

I have discovered that this problem exists if the swf is played in IE as well.

The Flash.ocx seems to decode/decompress every frame that is displayed as it comes, then never discards the old frames from memory.

I would love to be able to discard the old frames, and I believe it is possible, because a product called Zinc/FlashStudio Pro is able to do this flawlessly [url]http://www.multidmedia.com/software/zinc/[/url]

Does anyone have any suggestions for doing this?

My game's RAM consumption hits critical levels after about an hour of use.

vc++

prabhakar2611-Jul-05 1:33

prabhakar26

11-Jul-05 1:33

How to write socket and database programs in vc++ using MFC
can you give good source web sites for writing socket and database programs

thanks

prabhakar

Re: vc++

toxcct11-Jul-05 1:41

11-Jul-05 1:41

prabhakar26 wrote:
How to write socket

look at CSocket and CAsynSocket classes...

for accessing databases from within C++, you could use Carlos Antollini's ADO set of classes[^]...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Scipting

ditty grail11-Jul-05 1:32

ditty grail

11-Jul-05 1:32

I want to add the scripting facility to my MFC application.Please
suggest some tools , to develop my own c++ scripting codes.The
code should should interact with the vc++ environment well.

ditty grail

Re: Scipting

toxcct11-Jul-05 1:39

synchronization threads intra-process

11-Jul-05 1:39

what do you ear by "scripting" ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: Scipting

De Nardis Andrea11-Jul-05 7:14

De Nardis Andrea

11-Jul-05 7:14

Hi,
please consider this article:

[^]
It rocks.
Hope this helps,
Andrea

xcavin11-Jul-05 0:46

xcavin

11-Jul-05 0:46

I know we cricticalsection can accessed within a process which created it. But Mutexes can be accessed from a different thread even if its on a different process than which created it.

But wot about semaphores and events. Can they be accessed from different process than which created them ? Please throw some light.

Thanks in advance

Re: synchronization threads intra-process

khan++11-Jul-05 1:05

khan++

11-Jul-05 1:05

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/using_synchronization.asp[^]
Have a look at the synchronization functions as well.

this is this.

Re: synchronization threads intra-process

S. Senthil Kumar11-Jul-05 1:28

S. Senthil Kumar

11-Jul-05 1:28

AFAIK, Critical sections are the only process specific synchronization mechanisms in Windows. Everything else, which includes semaphores and events, are kernel level synchronization mechanisms and therefore can be used across multiple processes.

Regards
Senthil
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dynamic change the StatusBar information

gohappy_199911-Jul-05 0:46

gohappy_1999

11-Jul-05 0:46

I want to change the StatusBar information dynamicly when my mouse on the menu item. which message should me response?

I love you not for whom you are, but who i am when I'm by your side

Re: dynamic change the StatusBar information

David Crow11-Jul-05 5:43

Re: dynamic change the StatusBar information

11-Jul-05 5:43

What "StatusBar information?"

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

gohappy_199911-Jul-05 17:26

gohappy_1999

11-Jul-05 17:26

The message displays on the statusbar when my mouse focus on the menu item

I love you not for whom you are, but who i am when I'm by your side

Re: dynamic change the StatusBar information

David Crow12-Jul-05 2:45