C / C++ / MFC Discussion Boards

Re: How to read .Doc, pdf, .xls etc file?

David Crow19-Jan-06 4:16

David Crow

19-Jan-06 4:16

Amarelia wrote:
...but I am not able to read the file properly using CFile object.

Why not?

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

Re: How to read .Doc, pdf, .xls etc file?

Amarelia19-Jan-06 19:33

Amarelia

19-Jan-06 19:33

Hi,
Thanks for the reply,

I do it the following way...
CStdioFile fileToRead;
char * StringBlock = new char[64000];

fileToRead.Open(sCurrPath, CFile::modeRead | CFile::typeBinary, &feError);
nBytesRead = fileToRead.Read((unsigned short *)StringBlock, 60000);

The value of nBytesRead = 60000 after the last statement executes, but the StringBlock contains only few junk characters only. May be it encounters NULL or something like that which truncates it to only few chars. According to this the function reads the file correctly but the problem is in storing the data. I want to read maximum data possible at one go for the sake of my app's speed .

Please give appropriate solution.

Best regards and Thanks,

Mahesh

Re: How to read .Doc, pdf, .xls etc file?

kakan19-Jan-06 20:00

kakan

19-Jan-06 20:00

If the Read() tells you that it did read 60000 bytes, then that's the truth.

Your current problem is to display those bytes. Since most word processing files (all of them) contains a lot of binary information, your buffer is bound to have a lot of '\0'-chars.
Just trust nBytesRead.

Re: How to read .Doc, pdf, .xls etc file?

grigsoft19-Jan-06 4:22

grigsoft

19-Jan-06 4:22

You can get text from MS Office files by using COM, but this requires office installed.
Next, on new systems you can check IFilter interface - system uses it to index office files.
Finaly, you can use third party libraries. I can recommend http://www.wordcnv.com[^] - their libraries are very fast and support is the simply the best I have seen.

Igor Green
http://www.grigsoft.com/ - files and folders comparison tools

Re: How to read .Doc, pdf, .xls etc file?

Bob Flynn19-Jan-06 6:21

Bob Flynn

19-Jan-06 6:21

Try here Office Automation Using Visual C++[^]

Re: How to read .Doc, pdf, .xls etc file?

FarPointer19-Jan-06 6:32

FarPointer

19-Jan-06 6:32

Hi,
i guess you need to go through automation please see any standard MFC book and you can sail through easily,reading of excelfile is most time consuming if they have large data ,if posible convert them to CSV ( if you can ) and then parse them as you do on a text file . actually you can convert all the above formats to text format and parse ,for that you need to CreateDispatch on the respective application object and ask them to save the coressponding data in text formats .

Regards,
FarPointer

Check If Mouse Button Down

ZaebanB19-Jan-06 3:27

ZaebanB

19-Jan-06 3:27

I don't want to work with any afx_msg, I just want to test if the mouse button is clicked in the moment, something like if(GetKeyState(VK_SHIFT)&0x8000) function, but this is for keyboard using.
How can J do that,
Thank you

Re: Check If Mouse Button Down

David Crow19-Jan-06 3:33

David Crow

19-Jan-06 3:33

ZaebanB wrote:
I just want to test if the mouse button is clicked in the moment...

Have you considered the WM_LBUTTONDOWN message?

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

Re: Check If Mouse Button Down

ZaebanB19-Jan-06 3:37

ZaebanB

19-Jan-06 3:37

No, J don't want to catch any message.

Re: Check If Mouse Button Down

Stephen Hewitt19-Jan-06 3:37

Stephen Hewitt

19-Jan-06 3:37

Use GetAsyncKeyState.

Steve

Re: Check If Mouse Button Down

ZaebanB19-Jan-06 3:45

ZaebanB

19-Jan-06 3:45

Thank You

VS 2005 Class View redrawing

BambooMoon19-Jan-06 3:13

BambooMoon

19-Jan-06 3:13

I have two large projects, both containing exactly the same code, under Visual Studio 2005. One of the projects is under Source Safe and one is not. In the one that is not under Source Safe, Class View works fine. I can scroll the long list of classes, and when I select one, I can scroll the long list of members of that class. In the identical but Source Safe-controlled project, both the class list and the member list get redrawn about once per second, FOREVER. Literally hours after opening the IDE, they still flash. It is impossible to scroll either list because if you do, on the next redraw (after one second), it will scroll back to the top. The flashing stops if you display a context menu, but resumes when you dismiss it.

This makes class view totally useless. Any clue how I can fix this? I'm not saying that Source Safe is the cause, only that that and the fact that the one under Source Safe was migrated from VS7 and the one not under Source Safe was created with VS8 are the only differences between these two projects.

[Added later]
I see now that if I disconnect the flashing one from Source Safe, Class View stops flashing. But I don't want to work disconnected. My Source Safe archive is on a network share that is connected, so there are no troubles accessing it.
-- modified at 9:14 Thursday 19th January, 2006

Want an MFC application to start just aftr booting

Aryan S19-Jan-06 3:02

Aryan S

19-Jan-06 3:02

I want an mfc app to start autometically just after booting. which way can i do that other than saving the .exe in startup?

Re: Want an MFC application to start just aftr booting

toxcct19-Jan-06 3:10

toxcct

19-Jan-06 3:10

place it in the startup menu, or in the relative registry key.
there are some answers for this problem on the articles of the site.

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20][VCalc 3.0 soon...]

Re: Want an MFC application to start just aftr booting

Aryan S19-Jan-06 3:12

Aryan S

19-Jan-06 3:12

i want to know some other way than placing it in the start up... is there any?

Re: Want an MFC application to start just aftr booting

toxcct19-Jan-06 3:12

toxcct

19-Jan-06 3:12

please read my previous answer to the end...

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20][VCalc 3.0 soon...]

Re: Want an MFC application to start just aftr booting

Prakash Nadar19-Jan-06 5:03

Prakash Nadar

19-Jan-06 5:03

put your app path here in the registry

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

-Prakash

Re: Want an MFC application to start just aftr booting

Maximilien19-Jan-06 5:19

Maximilien

19-Jan-06 5:19

have a look at how services are started.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: Want an MFC application to start just aftr booting

Shraddhan22-Jan-06 18:11

Shraddhan

22-Jan-06 18:11

So why not put a shortcut to your app in the Startup folder, rather than the app itself?

Shraddhan

read ascii matrix from file

Russell^'19-Jan-06 2:25

Russell^'

19-Jan-06 2:25

How to read an ascii matrix from file?
The bigger problem is that I don't know the columns and rows number.
So I have to read the data (fscanf) but at the same time I have to catch the carriage-return (but fscanf can't help me!!)

Another question:
I have a function, for this, that works well but only with known matrix dimension;
it use fscanf and FILE object. Is possible to do the same using CFile and/or CString? (i.e. there is a cast from CFile to FILE?)

Thanks

Have a nice code day Wink | ;)

Re: read ascii matrix from file

Maximilien19-Jan-06 2:49

Maximilien

19-Jan-06 2:49

well, don't use fscanf, read one line at a time, one "column" at a time.

I assume that you know the delimiter for each column, so use strtok to get each item for a line; add it to your matrix.

you could also pre-process your file, count the number of columns in the first line ( all lines have the same number of elements ? ) and count the number of lines in the file, then allocate your matrix with those numbers and re-read the file.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: read ascii matrix from file

Russell^'19-Jan-06 3:07

Russell^'

19-Jan-06 3:07

Thank you,
you gave me very good ideas Wink | ;)

Have a nice code day Wink | ;)

Re: read ascii matrix from file

David Crow19-Jan-06 2:53

David Crow

19-Jan-06 2:53

_Russell_ wrote:
...but at the same time I have to catch the carriage-return (but fscanf can't help me!!)

Sure it can. Why would you think otherwise?

_Russell_ wrote:
Is possible to do the same using CFile and/or CString?

Certainly.

_Russell_ wrote:
(i.e. there is a cast from CFile to FILE?)

Why bother using a CFile object then? In any case, no such conversion exists.

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

Re: read ascii matrix from file

Russell^'19-Jan-06 3:02

Russell^'

19-Jan-06 3:02

Hi David,

DavidCrow wrote:
Sure it can

let me understand: is there a way (using fscanf) to read a number from file and at the same time know if the CR is passed ?
Please, be more clear, and all my problems are solved. Big Grin | :-D

Thanks for your help Rose | [Rose]

Have a nice code day Wink | ;)

Re: read ascii matrix from file

David Crow19-Jan-06 3:30

David Crow

19-Jan-06 3:30

_Russell_ wrote:
is there a way (using fscanf) to read a number from file...

Yes.

int num;
FILE *pFile;
fscanf(pFile, "%d", &num);

_Russell_ wrote:
...and at the same time know if the CR is passed ?

What exactly do you mean by this? If you wish to read a line of text from a file, including the newline character, use fgets().

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

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