image color management - C / C++ / MFC Discussion Boards

Re: Getting by name.

Tomas Wilhelmsson19-May-03 21:48

Tomas Wilhelmsson

19-May-03 21:48

The name in the string should be about 10 - 20 bytes...

Re: Getting by name.

Tomas Wilhelmsson19-May-03 23:06

Tomas Wilhelmsson

19-May-03 23:06

Adding 160 elements
Add: 0 Millisecs
Starting iteration: 2000000 times.
GetByName: 58895 Millisecs
GetByPos: 4457 Millisecs

This is timings with about 25 char std::strings ... i havent optimized it much.
And using a std::vector ... damn thats alot of time! Poke tongue | ;-P

.. its timed using GetTickCount() just for the record Smile | :)

And btw, the time did not change if i changed the string to 1 char from 25.

The string comparation is only if(*it != Name) so far...

Re: Getting by name.

Niklas L20-May-03 2:50

Niklas L

20-May-03 2:50

How about writing an index file?

Hide physical Disk

rohit.dhamija19-May-03 1:08

rohit.dhamija

19-May-03 1:08

Dear ALL,
I am working a program to block a physical disk (removable disk, eg c: )so that it should be inaccessible from user mode.
For hiding the disk I modified Registry settings:
1)
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\NODRIVES which is a 32-bit word (DWORD).
========
if i hide c: by changing above settings , the drive is hidden but i can still access it from address bar or command prompt. Is there any way to block the drive completely ??
Waiting for a positive response.
Rohit
--------Complete solution for hiding drive------

change the registry value HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies
\Explorer\NODRIVES which is a 32-bit word (DWORD). The lower 26 bits of the 32-bit word correspond to drive letters A through Z. Drives are visible when set to 0 and hidden when set to 1.

Drive A is represented by the rightmost position of the bitmask when viewed in binary mode.

e.g. A bitmask of 00000000000000000000010101(0x7h)

The bitmask above hides local drives A, C, and E
---------------------------------------

Re: Hide physical Disk

svsrikanth20-May-03 2:16

svsrikanth

20-May-03 2:16

hai rohit even i am facing the same problem ,we can still acess the drives from the command prompt.

try seeing "Browser Helper Objects: The Browser the Way You Want It" in MSDN this may help u

can u share the solution with me once u grt it thx.

qrious

Http connection timeout

Jump_Around19-May-03 1:06

Jump_Around

19-May-03 1:06

Hi I want to send data using POST method. I use CAmHttpSocket, everything works fine, but generally how to set a timeout in case the server doesn't respond.

Please help

Re: Http connection timeout

David Crow19-May-03 2:56

David Crow

19-May-03 2:56

I'm not sure what CAmHttpSocket is but I think what you are looking for is CInternetSession::SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, ...).

image color management

Muhammad Ahmed19-May-03 1:05

Muhammad Ahmed

19-May-03 1:05

i'll be extremely gratefull to the people who try to help me .

My question is regarding the use of icm 2 api and is listed below

i am trying to find colors that are out of printer gamut using icm 2.0
using the following code

/*Getting color profile handles*/

HPROFILE hICMMonitorProfile
=OpenColorProfile(&input_profile_struc,
PROFILE_READ,FILE_SHARE_READ, OPEN_EXISTING);
HPROFILE hICMOutPutProfile
=OpenColorProfile(&output_profile_struc,
PROFILE_READ,FILE_SHARE_READ, OPEN_EXISTING);
if (hICMMonitorProfile == NULL||hICMOutPutProfile ==
NULL)
{
AfxMessageBox("OpenColorProfile() failed");
}

///////////////////////////////////////////////////////////////////////
/
///

/*Creating color transform*/
LOGCOLORSPACE lcs = {
LCS_SIGNATURE, 0x400,
sizeof(LOGCOLORSPACE)
};

lcs.lcsCSType = LCS_WINDOWS_COLOR_SPACE;

lcs.lcsIntent = LCS_GM_GRAPHICS;

m_hICMColorTransform =CreateColorTransform(&lcs,
hICMMonitorProfile,hICMOutPutProfile,ENABLE_GAMUT_
CHECKING|INTENT_RELAT
I
VE_COLORIMETRIC);
if (m_hICMColorTransform == NULL)
{
AfxMessageBox("ICM CreateColorTransform() failed");
}
/*checking RGB colors ,if they out of printer gamut ,
using code as
follows*/

//getting RGB color values from sliders

ICMInColor.rgb.red=m_R.GetPos();
ICMInColor.rgb.green=m_G.GetPos();
ICMInColor.rgb.blue=m_B.GetPos();
BYTE bytearray[1];
bytearray[0]=0;

CheckColors(m_hICMColorTransform,&ICMInColor,1,COLOR_RGB,bytearray);

if(bytearray[0]!=0)
{
//the color is now of of gamut

//according to my perception Smile | :)

}

this code never shows any value as out of gamut however when i use that

same profiles in photoshop ,the results are far away...different from it can anyone please help me ,solve this problem and also tell me any forums relating to icm discussion

ahmed

FLASH API

Suresh Chandra M19-May-03 0:56

Suresh Chandra M

19-May-03 0:56

hai,

Can any body help where from i can get flash api to use in my program. I don't want to use control to play the flash file, i want to use some API calls to send it to simulate it one the view.

suresh

Passing an object pointer from C++ to VB

pankajdaga19-May-03 0:46

pankajdaga

19-May-03 0:46

Hi everyone,

I have a C++ dll that has a few function interfaces to VB. Now, I need to pass a C++ class pointer to VB that they should be able to use or pass to another C++ dll.

Is it possible that I can pass the class pointer as a long value and they can cast it later or something.

I am really confused about this and some suggestion or even a small code snippet would be greatly appreciated.

Best regards,

Pankaj

P.S: it is not an ATL DLL.

Without struggle, there is no progress

Re: Passing an object pointer from C++ to VB

Jason Henderson19-May-03 3:09

Jason Henderson

19-May-03 3:09

That should work.

Jason Henderson

My articles

"The best argument against democracy is a five-minute conversation with the average voter." - Winston Churchill

Re: Passing an object pointer from C++ to VB

pankajdaga19-May-03 4:14

pankajdaga

19-May-03 4:14

Ok, I have the following function definition in C++:

long _stdcall GetInstance_()
{
return (long)pCtrl;
}

Now after I get this long value in VB. How can I cast it back to the object? Does VB even know about the original object?

Thanks,

Pankaj

Without struggle, there is no progress

Re: Passing an object pointer from C++ to VB

Jason Henderson19-May-03 4:22

Jason Henderson

19-May-03 4:22

VB isn't going to be able to use a C++ class pointer, but you can pass it to another C++ app or dll for use.

Jason Henderson

My articles

"The best argument against democracy is a five-minute conversation with the average voter." - Winston Churchill

Re: Passing an object pointer from C++ to VB

pankajdaga19-May-03 4:35

pankajdaga

19-May-03 4:35

Hi again,

Even if the other app does not know about this class? Does it need the header file or do I need to export this class in some way. If it is not too much hassle, can you post a small code snippet that I can use as a guideline?

Thanks,
Pankaj

Without struggle, there is no progress

Re: Passing an object pointer from C++ to VB

Jason Henderson19-May-03 4:55

Jason Henderson

19-May-03 4:55

Just think about it.

How could another app use a c++ class when it is not defined in that other app. If you include the header, it should work.

I don't have a code snippet handy.

Jason Henderson

My articles

"The best argument against democracy is a five-minute conversation with the average voter." - Winston Churchill

Re: Passing an object pointer from C++ to VB

pankajdaga19-May-03 4:58

pankajdaga

19-May-03 4:58

Yeah,

I was wondering if linking the lib file would be of any help.

Pankaj

Without struggle, there is no progress

Mapping Accelerator to Dialog Boxes.

Jawache19-May-03 0:24

Jawache

19-May-03 0:24

I can't seem to map my accelerator keys to my dialog.

I have mapped the Accelerator 'Alt + 1' to my Dialog class but the functions are not being called?

If I map the accelerator keys to my MainFrame (to try to forward them to my Dialog) then the functions are not called when the dialog box is displayed.

No matter what I do I cannot seem to use accelerator keys when a dialog box is being displayed.

I know I'm doing something stupid becuase I've seen this functionality before.

Any ideas?

Cheers

Asim Hussain
e: asim@jawache.net
w: www.jawache.net

Re: Mapping Accelerator to Dialog Boxes.

Jawache19-May-03 0:36

Jawache

19-May-03 0:36

I should just RTFM before I start posting shouldn't I.
Figured it out from here:
http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/Q222/8/29.ASP&NoWebContent=1

Asim Hussain
e: asim@jawache.net
w: www.jawache.net

How to send email ?

Nguyen Huynh Hung19-May-03 0:12

Nguyen Huynh Hung

19-May-03 0:12

How to write an application to send email.
I have:
FROM_email_address.
TO_email_address.
Subject, body of mail.
After a click on the button, the content will be send.

Re: How to send email ?

Dominik Reichl19-May-03 0:53

Dominik Reichl

19-May-03 0:53

I like this MFC class:

http://www.naughter.com/smtp.html[^]

Big Grin | :-D

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

Re: How to send email ?

Renjith Ramachandran19-May-03 6:13

Renjith Ramachandran

19-May-03 6:13

hope that i can complete and post an article shortly.

[ It is possible to represent everything in this universe by using 0 and 1 ]

Tracking Memory Allocations

The_Server19-May-03 0:02

The_Server

19-May-03 0:02

HI ALL

I want that every memory allocation will be tracked...

is there a way for me to overwrite the new and delete functions...

this and every other solution will be appreciated gracefully.

Objective: Tracking Memory Allocations

Thank you all...

Rose | [Rose]

-==--==--==--==--==--==-
=--= The Server =--=
-==--==--==--==--==--==-

Re: Tracking Memory Allocations

Vikram A Punathambekar19-May-03 0:09

Vikram A Punathambekar

19-May-03 0:09

The_Server wrote:
is there a way for me to overwrite the new and delete functions...

I'm assuming you meant to say overload , because new and delete are not functions; they are operators. In that case, no- these operators CANNOT be overloaded.

[EDIT]Red alert! Red alert! I made a horrifying mistake. Both new and delete can be overloaded. See all posts below.[/EDIT]

Regards,

Vikram.
-----------------------------
My site due for a massive update

1. Don't ask unnecessary questions. You know what I mean?
2. Avoid redundancy at all costs.
3. Avoid redundancy at all costs.

"Do not give redundant error messages again and again." - A classmate of mine, while giving a class talk on error detection in compiler design.

Re: Tracking Memory Allocations

Neville Franks19-May-03 0:29

Neville Franks

19-May-03 0:29

Vikram Punathambekar wrote:
I'm assuming you meant to say overload , because new and delete are not functions; they are operators. In that case, no- these operators CANNOT be overloaded.

Vikram, I'm afraid you aren't right. The new operator calls a function to allocate memory and you can overload or rewrite that. There is also "placement new". Look up a good C++ reference for more info. "More Effectiver C++" covers this briefly. And there maybe articles here on CP about overloading new and delete if my memory serves me correctly.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Re: Tracking Memory Allocations

Vikram A Punathambekar19-May-03 0:55

Vikram A Punathambekar

19-May-03 0:55

Neville Franks wrote:
Vikram, I'm afraid you aren't right.

Yes, I'm afraid you're right. Punning apart, thanks for correcting me. Yes, new can be overloaded and so can delete.In fact, I guess even calls like

int *p=new int[10];

and

foo *ptr=new foo;

can be considered overloading, right? I wasn't drinking. I feel so dumb Blush | :O

...I wonder if learning VB is any fun?

Vikram.
-----------------------------
My site due for a massive update

1. Don't ask unnecessary questions. You know what I mean?
2. Avoid redundancy at all costs.
3. Avoid redundancy at all costs.

"Do not give redundant error messages again and again." - A classmate of mine, while giving a class talk on error detection in compiler design.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.