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Hi all,
can any1 refer me to code samples
on how to display preview of my web cam using Direct show??
couldn't find it anywhere...
thanks
Yaron
Ask not what your application can do for you,
Ask what you can do for your application
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Hi,
i am modifying my partition table to create a new partition .But the system shows the newly created only after restarting the system. Is there any way to do this without restarting the system. I try BroadcastSystemMessage() with WM_DEVICECHANGE
but it is not working may be the parameters are not correct. Can anyone tell me how to use this function or some other function to refresh the sytem without restarting.
Thanks.
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ashtwin wrote: I try BroadcastSystemMessage() with WM_DEVICECHANGE
but it is not working...
What is the error?
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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Hi,
thanks for replying. I mean that though the function is returning 1 after execution but the system is still showing the same no of partitions even after the entry of newly created partition are inserted into the partition table.
I am using the function as
BOOL abc=BroadcastSystemMessage(BSF_POSTMESSAGE, BSM_ALLCOMPONENTS, WM_DEVICECHANGE, DBT_CONFIGCHANGED, 0);
Also i have tried with DBT_CONFIGCHANGED insted of DBT_CONFIGCHANGED but the result reamins the same.
Thanks.
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When i compiled my program i got the error "Debug Assertion Failed".I referred for that error in msdn .But i cant understand it.can you tell me how can i delete this error.
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keerthikaaa wrote: When i compiled my program i got the error "Debug Assertion Failed".
What line of what file?
keerthikaaa wrote: can you tell me how can i delete this error.
Not without knowing what is causing it.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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Any time you get an assert look for the line that is asserting in your debugger. If the answer isn't immediately obvious after doing so more often then not you will find a comment describing what the problem is. If there isn't, and the assert is in code you manage, put one in.
Steve
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look up CToolTipCtrl class in MSDN there are guided steps on how to use it....
good luck
Ask not what your application can do for you,
Ask what you can do for your application
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Add the LVS_EX_INFOTIP extended style and the control will show an infotip over items that are truncated.
If you want more complex infotips, handle LVN_GETINFOTIP.
--Mike--
Visual C++ MVP 
LINKS~! Ericahist | NEW!! PimpFish | CP SearchBar v3.0 | C++ Forum FAQ
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What is Slicing Problem in C++.How it is Occured? what is the best solution for it ?
krishna
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I think it has something to do with process/job scheduling (e.g., each gets a slice of the CPU for X units of time).
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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I guess you are referring the object slicing issue in c++ while passing class objects as by value in function parameters.
This issue happens when we are passing a derived class object as by value parameter to a function and there if we receive it into a variable of a base class type.
In this scenario generally, a derived class object will have more data members than its base or ancestor class objects, so the compiler, without complaining, simply "slices off" the extra data members of the derived class object and uses only the members inherited from the base or ancestor class for the base or ancestor class variable. However, when references or pointers to base arguments are used, this "slicing" does not occur, which is one of the reasons that references and pointers are so important in C++ OOP.
cheers mil10.
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Thank you mil, You clarified my assumptions in Object Slicing.
It is helped me to understand the code i have.
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I NEED B TREE INSERTION AND DELATION CODE.PLE HELP THANKS
WAQAS
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Ok, so Google for it. 
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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void MyFun()
{
Fun1();
FunSendingMessage();
.........code
}
void MessageHandlerFun()
{
.........code
.........code
}
Thank you very much!!!
-------------------
I am learning C++ and English
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That's what will happen automatically if you use the SendMessage API to send the message.
Steve
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the program control will run MyFun()
then it will call FunSendingMessage(), since it is using SendMessage, the main function MyFun will not regain control until the function MessageHandleFun() will finish and return....
so basically you don't have to do anything 
Ask not what your application can do for you,
Ask what you can do for your application
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Hi!
In my project, I am importing a class which contains a STL map as a member from a DLL (not written by me). My goal is to inherit a class and then add function that needs to access the map directly, i.e. there are no functions that return reference to this map so I could avoid map's protected scope. Class already contains similar functions that work properly.
(To demistify things a bit, the class is used for communication and uses TCP protocol via its own functions. I would like to inherit from the class and override some of the functions to make them use UDP protocol).
The problem is when my function is trying to access the map (at run-time), the whole thing crashes. Using VS2005 debugger, I have detected that in my function, the map object seems to be invalid (it still appears to be of map type but its size and content do not make any sense). If I try to log the content of the map (instead of accessing it) using functions which are already in the class, everything passes OK.
What puzzles me is that I managed to achieve the same thing a few months ago in another project, but I can't retrace my steps or reproduce the same result. I never changed and/or recompiled the library.
TIA for your help (and I apologize for the length)
Marko
P.S. Class header file looks in short like this:
#include ...
class OriginalClass {
public:
...
_declspec(dllimport) Function();
...
protected:
map<string, unsigned="" int=""> myMap;
};
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mbudisic wrote: P.S. Class header file looks in short like this:
#include ...
class OriginalClass {
public:
...
_declspec(dllimport) Function();
...
protected:
map myMap;
};
You should export/import the whole class with the usual macros.
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Yes, but as I stated, I didn't write the library and yet managed to somehow work around it (by some magic, apparently, since I can not reproduce it). What good is having protected members in such a class, anyway?
Thank you for your reply.
Marko Budisic
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Hi!
I'm using SetViewportExt, SetWindowExt to zoom a CImage picture. My problem is with zoom out. Let's say I want to zoom out to 50%. The image resulted is full of noises. I also used StrechBlt and got a better result but I would like to implement zoom features using SetViewportExt and SetWindowExt, and have the same result for zoom out like StrechBlt.
Can anyone help me?
Thnks.
Bogdan C
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Hi all,
I need to repaint a child window in my MDI application, which need not be active. If use MDIGetActive and MDINext to traverse the children, I am able to see a flickering. When the desired child is getting repainted, I am calling MDIActivate(pFirstChild) to reset the active child.
I'd like to do this using CDocument's GetFirstViewPosition and GetNextView. Kindly check the following code snippet: The problem is, the while loop executes exactly once, even though I open three child windows.
pos = pDocument->GetFirstViewPosition() ;<br />
<br />
while(pos)<br />
{<br />
CMyView *pView = (CMyView *) pDocument->GetNextView(pos) ;<br />
<br />
if(pView->m_childNum == m_usChildNo)<br />
{<br />
pView->SetDisplayData() ;<br />
pView->Invalidate() ;<br />
break ;<br />
}<br />
}
Where am I wrong?
Thanks in advance,
Sarvan AL
-- modified at 7:13 Monday 17th April, 2006
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I can see a break in the if condition.maybe that is why the loop occurs once?
try to debug it
Yaron
Ask not what your application can do for you,
Ask what you can do for your application
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