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Re: WM_DESTROY message does not appear to post on VK_ESCAPE

Sauce!4-Oct-07 5:29

Sauce!

4-Oct-07 5:29

YES! Thankyou! Big Grin | :-D

<3 <3 <3 <3 <3

Function Pointer? [modified]

kiranin4-Oct-07 3:01

kiranin

4-Oct-07 3:01

If we declare a function pointer as

typedef void (*myPtr)(void);
myptr NewPtr;

This means that NewPtr is a function pointer of type myptr, where myptr is inturn a function pointer to a function which returns void and takes no function parameters.. then what does the below piece of code mean?

Can somebody please interpret this piece of code for me?

typedef NTSTATUS (NTAPI *pfnNtQueryInformationProcess)(
IN HANDLE ProcessHandle,
IN PROCESSINFOCLASS ProcessInformationClass,
OUT PVOID ProcessInformation,
IN ULONG ProcessInformationLength,
OUT PULONG ReturnLength OPTIONAL
);

pfnNtQueryInformationProcess gNtQueryInformationProcess;

Thanx

-- modified at 9:07 Thursday 4th October, 2007

Re: Function Pointer?

toxcct4-Oct-07 3:15

toxcct

4-Oct-07 3:15

exactly the same as your code, at the difference that the pfnNtQueryInformationProcess is a typedef to a function pointer to a function which returns a NTSTATUS and gets as parameters a HANDLE, a PROCESSINFOCLASS, a PVOID, an ULONG, and a PULONG...

then you declare a variable gNtQueryInformationProcess of that type so defined...

what don't you understand in this ?

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Re: Function Pointer?

kiranin4-Oct-07 3:25

kiranin

4-Oct-07 3:25

Then it should have been declared as

typedef NTSTATUS (*pfnNtQueryInformationProcess)(
IN HANDLE ProcessHandle,
IN PROCESSINFOCLASS ProcessInformationClass,
OUT PVOID ProcessInformation,
IN ULONG ProcessInformationLength,
OUT PULONG ReturnLength OPTIONAL
);

pfnNtQueryInformationProcess gNtQueryInformationProcess;

What is this NTAPI in between? What is its signifance?

Thanx

Re: Function Pointer?

toxcct4-Oct-07 3:27

toxcct

4-Oct-07 3:27

kiranin wrote:
What is this NTAPI in between

it is the calling convention... see how it's defined if that interrest you, but it's probably one of these : __stdcall, __fastcall, __cdecl, __thiscall...

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Re: Function Pointer?

kiranin4-Oct-07 3:37

kiranin

4-Oct-07 3:37

hm.. yeah dats rite.. its a calling convention.. herez the piece of code frm winnt.h

#if ((_MSC_VER >= 800) || defined(_STDCALL_SUPPORTED)) && !defined(_M_AMD64)
#define NTAPI __stdcall
#else
#define _cdecl
#define NTAPI
#endif

Thanx Smile | :)

Re: Function Pointer?

David Crow4-Oct-07 3:22

David Crow

4-Oct-07 3:22

pfnNtQueryInformationProcess is a function pointer to a function that returns NTSTATUS, has an NTAPI calling convention, and takes five arguments.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Build binary with debugging information

Programm3r4-Oct-07 2:17

Programm3r

4-Oct-07 2:17

Hi all,

I am busy testing the use of minidumps, but I received this messge

Debugging information for @project 1.exe' cannot be found or does not match.
Binary was not built with debug information.

I am well aware of how to do it in Visual Studio

You can use the following options:
Compiler: /Zi (/Z7 and /ZI can also be used in some cases - see their documentation for more information)
Linker: /debug (in release builds also use /opt:ref option)
All these options can be set in the IDE.

My question is, how can I do it in Borland Developer Studio 2006 ??

Can anyone please help me ??

Many thanks
Regards,

The only programmers that are better that C programmers are those who code in 1's and 0's Green Alien | [Alien]

Programm3r
My Blog: ^_^

How to identify click event of Tab control?

Atul234-Oct-07 1:49

Atul23

4-Oct-07 1:49

Hi All,

I am doing project in VC++ 6.0 in which i am displaying tabs on the window area.I want to load a particular page whenever user click on particular tab.These tabs are created at run time.So how can I identify which tab is clicked by user.If anybody know the solution of this, then please forward it me.

Thanks in Advance

Atul

Re: How to identify click event of Tab control?

Naveen4-Oct-07 1:52

Naveen

4-Oct-07 1:52

you wil recieve a TCN_SELCHANGE message when user changes the tab item.

nave

[OpenedFileFinder]

Re: How to identify click event of Tab control?

David Crow4-Oct-07 3:24

David Crow

4-Oct-07 3:24

Atulmahajan wrote:
So how can I identify which tab is clicked by user.

Check out the PSN_SETACTIVE notification.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

using, namespace and enum: VS2003 Compiler Bug?

Russell^'4-Oct-07 1:35

Russell^'

4-Oct-07 1:35

Does anyone knows if

in file.h

namespace MyNamespace{
...
  enum MyEnum{
  ...
  EnumItem,
  ....
  };
...
};

then in file.cpp

using namespace MyNamespace;
...
foo(MyNamespace::MyEnum::EnumItem, ..);
or
foo(MyEnum::EnumItem, ..);
...

gives error C2825 and error C2275 in the first case
and
gives error C2039 in the second case
Cry | :((

It doesn't work also if I remove the line using (of course then using extended variable usage)

can it be related to a bug of the compiler in VS2003? I'm quite sure that I'm not wronging the code sintax.

Russell

Re: using, namespace and enum: VS2003 Compiler Bug?

jhwurmbach4-Oct-07 2:12

jhwurmbach

4-Oct-07 2:12

Hmm. This

namespace MyNamespace{
  enum MyEnum{ EnumItem,SecondItem	  };
};

int _tmain(int argc, _TCHAR* argv[])
{
  MyNamespace::MyEnum firstItem = MyNamespace::MyEnum::EnumItem;
  MyNamespace::MyEnum secondItem = MyNamespace::MyEnum::SecondItem;

  return system("pause");
}

gives a warning C4482: nonstandard extension used: enum 'MyNamespace::MyEnum' used in qualified name with VC 2005.

That is meaning that enums are second class citizens and the correct way of refering them would be:

MyNamespace::MyEnum firstItem = MyNamespace::EnumItem;
MyNamespace::MyEnum secondItem = MyNamespace::SecondItem;

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: using, namespace and enum: VS2003 Compiler Bug?

Russell^'4-Oct-07 2:22

Russell^'

4-Oct-07 2:22

yes!
you are right.
I found only now your same conclusion.
thank you

Russell

Re: using, namespace and enum: VS2003 Compiler Bug?

Russell^'4-Oct-07 2:20

Russell^'

4-Oct-07 2:20

Sorry,
looks solved:

this is a wrong usage
MyNamespace::MyEnum var=MyNamespace::MyEnum::EnumItem

this is correct
MyNamespace::MyEnum var=MyNamespace::EnumItem

Russell

how to change the color of header of list control

rajneshmalik4-Oct-07 0:50

rajneshmalik

4-Oct-07 0:50

i am using list control in report view and want to color the header of that list control, how this is done

malik

Re: how to change the color of header of list control

Naveen4-Oct-07 1:48

Naveen

4-Oct-07 1:48

AFAIK either you need to owner draw it or Custom draw( LVN_CUSTOMDRAW ) it.

nave

[OpenedFileFinder]

Re: how to change the color of header of list control

ThatsAlok5-Oct-07 0:49

ThatsAlok

5-Oct-07 0:49

custom draw is only way to do so.. for that you have to subclass CListCtrl

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

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VC Forum Q&A :- I/IV
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Help needed in Borland C++ Builder

__yash__4-Oct-07 0:24

__yash__

4-Oct-07 0:24

hi I need to call the following function somewhere in a program:
void __fastcall TFormMain::btnUpdateClick(TObject *Sender)
{.....}
This is the event of mouse-click on a button.
How can i call this function in the program itself (which otherwise gets called on 'mouse-click'??

Re: Help needed in Borland C++ Builder

_AnsHUMAN_ 4-Oct-07 0:41

_AnsHUMAN_

4-Oct-07 0:41

Try sending a WM_COMMAND message to the button
ex:SendMessage(WM_COMMAND,/*ID_OF_BUTTON*/);

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: Help needed in Borland C++ Builder

James R. Twine4-Oct-07 1:30

James R. Twine

4-Oct-07 1:30

By calling it directly. I do not know how the function is implemented, so I do not know if it can handle a NULL Sender parameter or not - e.g.:

     btnUpdateClick( NULL );

If you have to call it outside of the TFormMain class, you need a way to expose it from that class.

Peace!

-=- James
Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles

Re: Help needed in Borland C++ Builder (answer)

Programm3r4-Oct-07 3:57

Programm3r

4-Oct-07 3:57

Hi,

You can di it like this:

void __fastcall TForm1::BitBtn2Click(TObject *Sender)
{
  // what ever code come here
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{
	BitBtn2Click(Sender);
}

Makes sense ....
How that this help Smile | :)

Regards,

The only programmers that are better that C programmers are those who code in 1's and 0's Green Alien | [Alien]

Programm3r
My Blog: ^_^

Need Book

Tarek Jabri3-Oct-07 23:31

Tarek Jabri

3-Oct-07 23:31

Hi
can anyone help me finding a book about developing "com add-in" for office applications using mfc ?

thanks alot

Tarek

Re: Need Book

Programm3r4-Oct-07 2:58

Programm3r

4-Oct-07 2:58

See Here ....[^]

Regards,

The only programmers that are better that C programmers are those who code in 1's and 0's Green Alien | [Alien]

Programm3r
My Blog: ^_^

Check if exe exist at given location

josip cagalj3-Oct-07 23:30

josip cagalj

3-Oct-07 23:30

Hi,I have a path (like "c:\path\programname.exe")
How can I determine if program 'programname.exe' exist in 'c:\path' directory?
I tried with 'FindFirstFile' and checking 'WIN32_FIND_DATA' structure, but for what 'dwFileAttributes'?
Thanks!

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