C / C++ / MFC

Marissa18231-Jul-03 21:39

Marissa182

31-Jul-03 21:39

also is there an easy way to convert a CString into an int?

Brian Shifrin1-Aug-03 9:25

Brian Shifrin

1-Aug-03 9:25

CString str(5);
int n = _ttoi(str);

Vitali Halershtein31-Jul-03 21:46

Vitali Halershtein

31-Jul-03 21:46

In this case read MSDN "Data Conversion Routines" such as atof, atoi, atol...

Vitali

Ryan Binns31-Jul-03 21:46

Ryan Binns

31-Jul-03 21:46

Well, loop through for every character then. There's no single-function to do it Smile | :)

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Bob Stanneveld1-Aug-03 8:51

Bob Stanneveld

1-Aug-03 8:51

Actually there is!

CString::FindOneOf("AllTheCharactersThatAreNotNumbers...");

It's not the best way to do it, but it is possible Poke tongue | ;-P

A student knows little about a lot.
A professor knows a lot about little.
I know everything about nothing.

Ryan Binns1-Aug-03 14:07

Ryan Binns

1-Aug-03 14:07

If you're using Unicode, there are 65525 characters that are not digits Smile | :)

. I dunno about you, but I'd rather find a different way Wink | ;)

.

But yes, technically it's possible and no, I didn't think of it Smile | :)

A better way to do it is

if(str.SpanIncluding(_T("0123456789")) == str)
    // str is only numeric
else
    // str contains non-numeric characters

but this has problems as well Smile | :)

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Blitting 8-bit image into 24-bit screen

Bob Stanneveld2-Aug-03 6:09

Bob Stanneveld

2-Aug-03 6:09

I didn't even thought about UNICODE Smile | :)

.

There are 2 proper ways you can solve this problem:

1) Write your own function
2) Just convert the string using atoi (or some other function) and check the return value Smile | :)

If time wouldn't be a problem I would write my own function...

A student knows little about a lot.
A professor knows a lot about little.
I know everything about nothing.

koxin31-Jul-03 21:10

koxin

31-Jul-03 21:10

Hi,
I'm writing a tile-based arcade game for Win2000, no Directx, 24-bit screen depth and since I do some paralax scrolling requiring a lot of transparent blits, I have performance problems. As I think 256 colours would be enough for my application, I'd like to know if it is a good idea to create only 8-bit back buffer in memory and then blit it into 24-bit windows screen. Or, maybe have 24-bit back buffer and blit in 8-bit images. Would this speed-up my program?

Koxin

Use CSkinProgress::ConvBitmap(...)

Kochise31-Jul-03 21:41

Kochise

31-Jul-03 21:41

You may find this useful function in my CSkinProgress component at : http://www.codeproject.com/miscctrl/CSkinProgress.asp

Output bitmap : a bitmap created but NOT initalized
Input bitmap : your 8-bits bitmap
CDC : None to convert in the current DC, or a 24-bits compatible DC

The best is to include the CSkinProgress in your project (you might use it for various purposes Poke tongue | ;-P

), then create a CSkinProgress object and use its CSkinProgress::ConvBitmap(...) function for your own purposes !

Kochise

In Cod we trust !

Conversion fron binary file to text file format?

Pratima Hegde31-Jul-03 19:41

Pratima Hegde

31-Jul-03 19:41

How do I convert a binary file to text file..?
Is there any API or any method by which I can achieve this...

Pratz

Re: Conversion fron binary file to text file format?

Frank K31-Jul-03 20:08

Frank K

31-Jul-03 20:08

Hi,

some questions:
Is it realy a binary file? (you can't read anything if you view this file with e.g. Notepad). It is also possible, that you can read something with notepad, e.g. if you open a Worddocument as text file.

What type of binary file is it?

If it is realy a binary file, than you must know the coding rules (the same for decoding) for this type of file.

Regards
Frank

Re: Conversion fron binary file to text file format?

koxin31-Jul-03 21:50

koxin

31-Jul-03 21:50

I'm not sure what you want to do, but anyway the difference between binary and text files is that text files are actually subgroup of binary files. That means that bytes (characters) in text files have only certain values specified in ASCII table (e.g. 'a' has a value of 97, 'b' 98, ...) while bytes in binary files can have any possible values (0-255).

Thus if you want to display a binary file in a text editor all you need to do is replace all non-ASCII characters with ASCII characters. Then the text editor will not find any character it can't deal with in the file and will consider it to be a text file.

Koxin

How to get text on screen ?

blueinred31-Jul-03 17:19

31-Jul-03 17:19

Sorry, it may be a old question, but i couldn't found Dead | X|

it !

My mean is very simple, i want my program can hook Right click event and get the text under mouse pointer .
Any one can help me ?

MartinOrtiz31-Jul-03 18:09

MartinOrtiz

31-Jul-03 18:09

Are you talking about a window in your own program, or any window of any program?
The second is almost impossible, because the user could be right clicking over anything, not just text, and even if he did, you would have no way of knowing it.
If you want to hook into system wide mouse events, I've heard of that being done, how you would find out what window owns that mouse event or has text, I'm not sure.

blueinred31-Jul-03 18:48

31-Jul-03 18:48

Sorry !
My mean is anywhere, any program ( IE, Office,....),
i've see some program can do that , ah , i'm a vietnamese, we have a good English- Vn e-dictionary is
" Just Click'n'See" that can get a English word from screen and display it's Vetnamese mean ! It's so cool !

So i'm want to know the beside tech of it !

Toni7831-Jul-03 18:37

Toni78

31-Jul-03 18:37

Even though MartinOrtriz replied to your post, you can read the answer in the FAQ page here [^].

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

blueinred31-Jul-03 19:15

31-Jul-03 19:15

____________
4.14: How do I retrieve the text that the mouse cursor is pointing at? (top)

There is no built-in way to do this. Once the text is on the screen, it is no longer readable as a character string, only as a bitmap. You'll need OCR (optical character recognition) software to transform the bitmap back into a string of characters.

______________

Ofcource, there is no built-in way, but it's not a mission possible, try download this program and feel it
Just Click'n'See

thank !

Toni7831-Jul-03 19:39

Toni78

31-Jul-03 19:39

I know what you mean because I have a dictionary that works by clicking on the words. The thing is that in those dictionaries the programmers know where the words are located. To tell you the truth I don't know what kind of algorithms they use, but trying to get any words that appear on any window doesn't seem to be simple. You are looking at pixels not an edit box. And of course it is not mission impossible, and you can go ahead and try it but it might turn into mission un-feasible. Smile | :)

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

blueinred31-Jul-03 20:38

31-Jul-03 20:38

No, no, no Smile | :)

!
Don't simple like that, why u don't try
Just Click'n'See
one time !
that all my mean !

The core of it's solution is :
- Hooking mouse or Keyboard
- Get position
- Invalid this screen and windows will re-paint it
- Hooking output stream and get what u want

But what i need is a sample source code Wink | ;)

But, thank for your comments

Toni7831-Jul-03 21:05

Toni78

31-Jul-03 21:05

Sorry but I cannot understand the program because it is in Vietnamese. My reply was intended to tell you that what you are after is not easy. Smile | :)

I really cannot help you with your brainstorming because I have never attempted to read text from the screen and I don't think I will in the near future (I usually don't try things unless I have to). With that said and done let me remind you that Einstein (I think) said (not his exact words): "There is something that every man on this planet knows that it cannot be done. Here comes a person that doesn't know that and he solves the problem." Let's hope you will be that person. Smile | :)

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

koxin31-Jul-03 21:39

koxin

31-Jul-03 21:39

Hi,

I'd also like to know a solution to this problem. I'm not proficient in windows programming, but I suggest this:

- get the handle of the active window
- send the window doubleclick message (this should select the word the mouse is pointing at)
- send a message that copies the selection into clipboard
- read the word from clipboard

maybe that once the word is selected it's also possible to retrive it by sending the window some getselection message or something like that.

what do you think?

Koxin

p.s. if you find a solution to this problem please let me know

blueinred31-Jul-03 22:36