static const int inside class - C / C++ / MFC Discussion Boards

blackeye200417-Jul-06 22:42

blackeye2004

17-Jul-06 22:42

Now I want to adjust video settings(such as hue,contrast,etc)during rendering the video.
I use VMR9, GetProcAmpControl, SetProcAmpControl ,functions of IVMRMixerControl9 interface are failed whereas other
function of this interface are succeeded.The error return is 0x80040299.
Did anyone who had the same video adapter try those functions and
succeed?
Thank you for your answer an advance.

Windows Hooks

ERLN17-Jul-06 22:33

ERLN

17-Jul-06 22:33

I Implemented Windows HOOKs for WH_CALLWNDPROC and WH_CALLWNDPROCRET

I am able to hook the messages related to control using this.

Using this I am able to whethere check box is checked or unchecked ,check
box name etc....

But only all the control created in win32 or MFC not created by Visual Basic.

After find information using spy++ I got controls created by visual basic is
giving WM_COMMAND message and notifications

Even touch I am not able to find the match of control notification
equivalent in win32 control notification.

I need more explaination about hooking and getting those informations.

WM_QUIT
Lakshmi Narasimman

Re: Windows Hooks

Hamid_RT18-Jul-06 0:00

Hamid_RT

18-Jul-06 0:00

ERLN wrote:
I need more explaination about hooking and getting those informations.

See Here[^]

whitesky

Re: Windows Hooks

ERLN18-Jul-06 1:03

ERLN

18-Jul-06 1:03

Hi !

I already Implemented the hooks.
I am asking doubt about hooking on visual basic control.
I am not able to monitor button related message or edit control related messages like EN_ or BN_
using the windows hooks i got only core controls created using win32 or mfc etc......what about visual basic.
How should i monitor the visual basic control notifications or control messages ?

Please clearly read my question

WM_QUIT
Lakshmi NArasimman

DirectX Programming

Kuroro Rucilful17-Jul-06 22:19

Kuroro Rucilful

17-Jul-06 22:19

Does anyone help me plot a single pixel in 320x200 screen @ 256 Color? Confused | :confused:

"You have to be in a situation where you see just how fast things fail to make you take it seriously, I guess. " Bruce Eckel

Re: DirectX Programming

NiceNaidu17-Jul-06 22:54

NiceNaidu

17-Jul-06 22:54

Chk this tutorial..I did n't work on DirectX.
http://www.sunlightd.com/Windows/DirectX/[^]

Appu..
"If you judge people, you have no time to love them."

Re: DirectX Programming

Kuroro Rucilful17-Jul-06 22:58

Kuroro Rucilful

17-Jul-06 22:58

Thanks a lot bro... i'm digging in it. Big Grin | :-D

"You have to be in a situation where you see just how fast things fail to make you take it seriously, I guess. " Bruce Eckel

static const int inside class

vikramlinux17-Jul-06 22:15

vikramlinux

17-Jul-06 22:15

hie Guys,

I have a class like

class ABC
{
public:
static const int var=10;
};

Here initialing the var with 10 is allowed inside class.

In early compilers(I have VC 6.0) it does not work but it works with VC7.0.

Rule says that only static integral constants are allowed to be initialized inside class.

May I know why this requirement came when we already have following facility as shown belows

class ABC
{
public:
static const int var;

};

const int ABC:: var =10;

Also My question is where is the compiler putting this code - static const int var=10 when it is inside a class?
It can not be in constructor or in memberwise Initialization list.So what is workaround? Why this is special case?

Vikram S

Re: static const int inside class

toxcct17-Jul-06 23:52

toxcct

17-Jul-06 23:52

vikrams wrote:
Also My question is where is the compiler putting this code

all the static initializations are done at the beginning of the application, whatever it is a class member or not.

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: static const int inside class

vikramlinux17-Jul-06 23:55

vikramlinux

17-Jul-06 23:55

True. What about "static const" inside class?

Re: static const int inside class

toxcct17-Jul-06 23:59

toxcct

17-Jul-06 23:59

vikrams wrote:
What about "static const" inside class?

static const is static BTW, right ?

then same rule.

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: static const int inside class

Maxwell Chen18-Jul-06 0:03

Maxwell Chen

18-Jul-06 0:03

static const members can be initialized inside class inline definition.

for example the below compiles:

class A
{
public:
	static const  int v = 3;
};

int main()
{
	A a;
	a.v;
	
	return 0;
}

Maxwell Chen

Re: static const int inside class

toxcct18-Jul-06 0:06

toxcct

18-Jul-06 0:06

then... isn't it what i was saying ?

even if you write the initialization there, the code is executed at the beginning of the program (because static members are initialized like that).

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: static const int inside class

Rob Caldecott18-Jul-06 0:06

Rob Caldecott

18-Jul-06 0:06

Unless the static is within a method, in which case it is initialized the first time the method is called (potentially causing some thorny multi-threaded issues).

Re: static const int inside class [modified]

vikramlinux18-Jul-06 0:36

vikramlinux

18-Jul-06 0:36

Hey Guys,
What code u have provided is correct. I also mentioned same code in my question. I have 2 concerns

1) const static members can be directly init in class
so what is wrong with normal static members?

2) As normal const vars has to be init at the time of declaration in code(somewhat like references ). In my class I need to init my const var in memberwise init list.

so we have an issue where we have const needs whose init code needs to be inside class and static needs to be outside.

so the soln in compiler is put static const var outside let it be define there.
Here my question is why we can also put it inside class? what is req. forced to provide such facility? what is rational behind that?

-- modified at 6:46 Tuesday 18th July, 2006

Unregister same registering with 'regsvr32.exe' ?

Andy Rama17-Jul-06 20:46

Andy Rama

17-Jul-06 20:46

Hi to all,
How to Unregister a registered dll file, with or without coding ?
As we can Register a dll using 'regsvr32.exe', is there any option to unregister the register dll?

Thanks & Best Regards,
Aniket Salunkhe

Re: Unregister same registering with 'regsvr32.exe' ?

NiceNaidu17-Jul-06 20:50

NiceNaidu

17-Jul-06 20:50

To unregister regsvr32 /u C:\YourFile.OCX

Appu..
"If you judge people, you have no time to love them."

Re: Unregister same registering with 'regsvr32.exe' ?

Andy Rama17-Jul-06 21:03

Andy Rama

17-Jul-06 21:03

Thanks for help.

Re: Unregister same registering with 'regsvr32.exe' ? [modified]

AkiraOne17-Jul-06 20:52

AkiraOne

17-Jul-06 20:52

Start->Execute

type regsvr32 and then Enter.....

you can visualize a dialog options.

regsvr32 "file path" /u

Too many plans make the health badly!!

-- modified at 2:52 Tuesday 18th July, 2006

Re: Unregister same registering with 'regsvr32.exe' ?

Andy Rama17-Jul-06 21:04

Andy Rama

17-Jul-06 21:04

Thanks for help.

Re: Unregister same registering with 'regsvr32.exe' ?

Anilkumar K V17-Jul-06 23:37

Anilkumar K V

17-Jul-06 23:37

Ex for regster given , to un reg, get function pointer of "DLLUnReg...Svr"

HCRET lpfnDllRegisterServer = NULL;
DLLName = "YouDLLName.dll";
hDLL = LoadLibrary(DLLName);
if (hDLL != NULL)
{
lpfnDllRegisterServer = (HCRET)GetProcAddress(hDLL, "DllRegisterServer");
if(NULL == lpfnDllRegisterServer)
{
//ERR
}
else
{
if(FAILED((*lpfnDllRegisterServer)()))
{
ERR ("Tripio registration failed!");
}
else
{
//"Registering DLL Success"
}
}

FreeLibrary ( hDLL );
}
else
{
ERR("LoadLibrary failed");
}

Re: Unregister same registering with 'regsvr32.exe' ?

Andy Rama18-Jul-06 20:22

Andy Rama

18-Jul-06 20:22

Hi,
I tried ur code in VC6. But it is giving me Errors like,
: 'HCRET' : undeclared identifier

Thanks & Best Regards,
Aniket Salunkhe

Re: Unregister same registering with 'regsvr32.exe' ?

Anilkumar K V18-Jul-06 23:35

Anilkumar K V

18-Jul-06 23:35

Friend

HRECT is just a function pointer type def as

typedef HRESULT (CALLBACK *HCRET)(void);

Let me know worked or not to anilkumarkv@gmail.com

Re: Unregister same registering with 'regsvr32.exe' ?

ThatsAlok18-Jul-06 0:42

ThatsAlok

18-Jul-06 0:42

Aniket Salunkhe wrote:
As we can Register a dll using 'regsvr32.exe', is there any option to unregister the register dll?

you can dynamically load dll and call teh dllunregister routine

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Re: Unregister same registering with 'regsvr32.exe' ?

Andy Rama18-Jul-06 20:27

Andy Rama

18-Jul-06 20:27

Hi,
I dont understand where this routine should be called.
If possible give me an example.

Thanks & Best Regards,
Aniket Salunkhe

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