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Good point 
I have now written my encryption code into my user class where I now think it belongs. I just pass my key to the user class and let that do the worrying about encryption.
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The application that I am working on has a view with base class CListView. When I click on an item in the list, I change the state mask.
i.e.
lvi.state = INDEXTOSTATEIMAGEMASK(n);
Then, I update the list.
I would like to scroll to the item in the list which I have just changed. I have tried GetScrollInfo and SetScrollInfo. This moves the scroll bar to the specified position but the list view does not scroll (remains at top).
How do I scroll the view with the scrollbar?
Any advise which can help me understand this method is greatly appreciated.
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Incredibly, after several evenings bashing my head on this problem, I found the answer directly after submitting my question. I have found that I only needed to use the method EnsureVisible.
Thanks to anyone who took time to read my dumb question. Any further advise is certainly welcome.
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I do this same thing all the time
The word of the day is legs, let's go back to my house and spread the word 
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What is the fasted way to swap bytes in a ushort/ulong?
For example:
0x1234 -> 0x3412
0x12345678 -> 0x78563412
unsigned short short_exch(const unsigned short a)
{
return (a << 8) + (a >> 8);
};
unsigned long long_exch(unsigned long a)
{
unsigned long t = a&0xff;
a >>= 8;
t <<= 8;
t += a&0xff;
a >>= 8;
t <<= 8;
t += a&0xff;
a >>= 8;
t <<= 8;
return t + a;
};
Jürgen Eidt
http://cpicture.de/en
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Try a union :
<br />
typedef union<br />
{<br />
ULONG itemlong;<br />
UCHAR itemchar[4];<br />
} UnionLong;<br />
then you can swap the bytes through a temporary variable.
a two cent stamp short of going postal.
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Didn't thought of a union
But even swapping with the xor trick I'm not sure how the compiler optimization would be. I guess looking at the asm code would make the final judgement.
Thanks.
Jürgen Eidt
http://cpicture.de/en
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unsigned long Swap(unsigned long value)
{
return ((value & 0xFF000000) >> 24) |
(value & 0x00FF0000) >> 8) |
(value & 0x0000FF00) << 8) |
(value & 0x000000FF) << 24);
}
Software Zen: delete this;
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You're welcome. If you make the function inline, the compiler will compile it in place without the function call overhead (I forgot to do that).
Software Zen: delete this;
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Of course inline!
Actually you can remove the masking for the 24 bit shifts. For the inner two bytes I don't see an improvement.
Thanks Gary for the follow up
Jürgen Eidt
http://cpicture.de/en
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I need help in .cpp and .h implementation code for the 8 bit binary addition.
The program has to handle additions of both positive and negative binary strings with the following assumptions:
The first string is stored using two's complement and the second using 8-bit bias notation. The result should be a bit string in two's complement (including a decimal interpretation of the result). I even have to keep track of overflow condition.
It would be great if you can send me the code.
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I think you would probably learn much more if you were to do your own homework than if someone else were to do it for you.
a two cent stamp short of going postal.
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Hello,
I have not done MFC programming for quite awhile and am now undertaking a (sort of) relearning process.
Could someone tell me if I can implement a certain process in InitInstance (derived from CWinThread) without freezing the OS, i.e. a drive parser which looks for certain files to analyse & update.
Also, if you are in possession of a good knowledge about Threads (specifically CWinThread) would you mind telling me a bit about how it works in a general way?
Thank you for taking the time.
David
dNimrod#X
________________________
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dNimrod#X wrote:
Could someone tell me if I can implement a certain process in InitInstance (derived from CWinThread) without freezing the OS, i.e. a drive parser which looks for certain files to analyse & update.
I guess you can. As long as you provide a way to inform your application's user about what the hell is happening i.e. why is it taking too long. are you getting my point? (Ofcourse, I am talking about interactive applications)
Gurmeet S. Kochar
If you believe in God, it's because of the Devil
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Gurmeet S. Kochar wrote:
I guess you can. As long as you provide a way to inform your application's user about what the hell is happening i.e. why is it taking too long. are you getting my point? (Ofcourse, I am talking about interactive applications)
Yes I understand your point but what I am not sure about is if the dialog box's controls will still be accessible while the disk drive parsing is running. I mean, the question now is whether or not the dialog box will not freeze (if the message proc will still handle messages from the dialog box) ?
Ravi Bhavnani wrote:
Yes. But you will probably want to create the file search and analysis as a separate thread.
Do I really have to?
Thanks a lot for your replies and for taking the time.
dNimrod#X
________________________
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Yes. But you will probably want to create the file search and analysis as a separate thread.
/ravi
My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com
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i have two questions:
1) how do i go about creating a gui for a dos (not dos-mode) application? ie. what program do i use to creat this?
2) if i don't want to make a gui then what do i need to make a command based application in dos? and are .exe and .com the same thing?
thanks,
Rob Tomson
--
There are 10 kinds of people. Those who understand binary and those who don't.
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1) DOS has not a gui support, you need a third party library like Borland's Turbo Vision (text mode windows) or other.
2) All reasonable programing tools (Turbo Pascal, C/C++) for dos can create command-line programs.
Pavel
Sonork 100.15206
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i know dos doesn't have a gui support....so how do i make one? ex. i've seen some bios screens that have a gui.
i made a console app in c# but i guess it won't run in dos. can i make a console app in c++ .net or c++ 6.0?
thanks,
Rob Tomson
--
There are 10 kinds of people. Those who understand binary and those who don't.
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certainly ,you can make a console app in c++ 6.0.and you can make a gui like some bios screens .In visual c++ 6.0 you can't use windows classes like CWnd .
i'm software engineer
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You might want to try these (somewhat dated) packages:Check out other links here[^]. Good luck!
/ravi
My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com
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Hi all,
In a dialog, is it possible to align a control with layout guidelines such that if the dialog is resized, the conrol is also resized accordingly?
Mark
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Hi there,
I am writing an application where I want to open a file... but not via CWinapp:OnOpenFile(), I do my own DoPromptFileName().
My problem now (maybe very simple): How do I tell the OpenFileDialog, IN WHICH DIRECTORY it should start?
Example:
I got two different file-types to handle, one "*.abc" and the other "*.def". I also got two buttons, A = "Open ABC-file" and B = "Open DEF-file".
Now I have two default folders, maybe "C:\files\abc\" and "E:\Files\def\" where the files lay.
Now how do I tell the OpenFileDlg to initially browse in the "C:\files\abc\"-folder when pressing Button A, but browsing folder "E:\Files\def" when pressing button B?
I hope everyone understood my problem and anyone out there can help me...
Thanks in advance!
Tiberius
----------------------------------------------------------
I once had a nightmare in binary --- I think there was a 2
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