C / C++ / MFC

FOUND :-) Re: Desktop patterns and wallpapers retrieval

27-Nov-01 18:06

This registry key has a list of all the patterns

HKEY_CURRENT_USER\Control Panel\Patterns

I cant figure out where it saves the current pattern Frown | :-(

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
Nish is a BIG fan of Goran Ivanisevic

Nish Nishant27-Nov-01 18:40

27-Nov-01 18:40

Nish [BusterBoy] wrote:
This registry key has a list of all the patterns

HKEY_CURRENT_USER\Control Panel\Patterns

I cant figure out where it saves the current pattern

Open this key

HKEY_CURRENT_USER\Control Panel\Desktop

and take a look at the value "Pattern"

Now compare the value of "Pattern" with all the patterns to find out which of the named patterns is the current pattern

If there is no current patter "Pattern" will return a null string

Sonork ID 100.9786 voidmain
www.busterboy.org
Nish is a BIG fan of Goran Ivanisevic

wallpapers retrieval

Nish Nishant27-Nov-01 18:54

27-Nov-01 18:54

For getting wallpaper info do this -

Open this key :-
HKEY_CURRENT_USER\Control Panel\Desktop

Query the following values :-

TileWallpaper [can be 1 or 0]
Wallpaper [the fullpath filename of the wallpaper]
WallpaperStyle [can be 0-for center and 2-for stretch] -- [I dont know what 1 stands for Smile | :)

]

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
Nish is a BIG fan of Goran Ivanisevic

CTreeCtrl question

Vu Nguyen27-Nov-01 10:37

Vu Nguyen

27-Nov-01 10:37

Hi all!

I have a tree in a dialog. The dialog has other controls on it also. When I select a branch in my tree, the branch changes color (it's highlighted). If click on different control, say a button outside the tree, then the branch change color back to before it was selected(it's not highlighted any more). How do I keep its highlighted color when the tree looses focus?

Thank You
Vu

vucsuf

Re: CTreeCtrl question

Brad Bruce27-Nov-01 11:51

Brad Bruce

27-Nov-01 11:51

Make sure you check "Show Selection Always" in the resource editor.

Re: CTreeCtrl question

Nish Nishant27-Nov-01 18:00

Reading Binary Files - file ptrs

27-Nov-01 18:00

use the TVS_SHOWSELALWAYS style

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
Nish is a BIG fan of Goran Ivanisevic

john john mackey27-Nov-01 9:44

27-Nov-01 9:44

Help!

I'm having problems understanding. I am reading a binary file using a structure to hold the data:
MY_STRUCT myStruct
fread(&myStruct,sizeof(MY_STRUCT),1,inFp)

When I examine the elements of myStruct, it looks like data is stored correctly in the structure's data elements.

HOWEVER, when I try to read the file again, the file pointer inFp is not at the end of the just read structure -- it doesn't advance to the end of the just read block of binary data, but instead looks to be positioned half-way between the start and end of the block.

Any help? I just want to read binary data one logical block at a time.

Thanks.
Johnny

C^hris L^osinger27-Nov-01 9:58

C^hris L^osinger

27-Nov-01 9:58

fread should act just as you assume - it reads and sets the fp to the place it stopped reading. check the return from fread, or call feof, to make sure you're not out past the end of the file...

-c

Smaller Animals Software, Inc.

john john mackey27-Nov-01 10:01

27-Nov-01 10:01

That's what I thought and hence my (utter) bewilderment %-)

thanks, I'll keep trying.

Derek Waters27-Nov-01 11:15

Derek Waters

27-Nov-01 11:15

Just a thought, as this is a problem I have encountered myself. In the debugger, try seeing what sizeof(MY_STRUCT) is and compare it to what you're expecting. I've found that the program that generates the structured files can be using a pragma pack (see MSDN for details) might result in a different value of sizeof(MY_STRUCT) than another program that is not using it.

I believe that VC++ tries to align structures to 4-byte boundaries (not sure - I'd have to check MSDN) so if it is not packed, the sizeof call could return a value larger than expected.

Hope this helps.

------------------------
Derek Waters
derek@lj-oz.com

Todd Smith27-Nov-01 12:30

Todd Smith

27-Nov-01 12:30

To fix the byte alignment problem you can change the packing for your structure so the extra bytes are not added.

#pragma pack(push, 1)

typedef struct
{
 blah
} MY_STRUCT;

#pragma pack(pop)

Todd Smith

john john mackey28-Nov-01 12:25

ANSWER: Reading Binary Files - file ptrs

28-Nov-01 12:25

Thanks.

I am using a #pragma pack as follows:

#pragma pack (push, enterImportExport)
#pragma pack (2) // 1,2,4,8,16
// Restore enterImportExport settings at end of this header file.

typedef struct
{
blah,
blah,
} MY_STRUCT;

...
typedef struct
{
blah,
} ANOTHER_STRUCT;
...

// Restore enterImportExport settings.
#pragma pack (pop, enterImportExport)

I don't think I have tried all the alignment values (1,2,4,8,16), but byte alignment did pose a problem when I was reading another binary file using ANOTHER_STRUCT -- this works.

Thanks for the suggestions. Curious on results?

Johnny

john john mackey30-Nov-01 5:44

30-Nov-01 5:44

Ah!

I found my critical mistake. Yes, the byte-alignment would be an issue and I did account for this as my binary file read is based on a similar operation I performed successfully in the same application.

MY PROBLEM WAS in how I opened the file. I orginally was reading a text file and then when I changed to reading a binary file, I forgot to use the parameter in the fopen() statement:

fopen (sSourceFile,"rb") instead of just fopen (sSourceFile,"r")

Thanks for all those who offered help and advice.

Johnny Big Grin | :-D

CString question

RobJones27-Nov-01 9:42

RobJones

27-Nov-01 9:42

Hello,
What would be the easiest way to extract just a file name from a CString containing a full path and file name?.. I realize there are other ways of getting the file name besides parsing the string but for right now I need to extract the info from a string..

eg..
CString strPath;
strPath = "c:\\some path\\that could be deep\\this is\\file.txt";

What would be the best way to extract the "file.txt"? The problem I am having is the file is not all ways the same name and the path varies in length(depending where the file is located."

Thanks,
Rob

Rob Jones

john john mackey27-Nov-01 9:59

27-Nov-01 9:59

You may have got the answer already, but here is what I would offer:

pos = strPath.ReverseFind('\\') and
strPath.Right(pos)

It would be proper to test if strPath actually is in the format you expect, i.e. DriveName:\...\filename.extension

a slick routine would except:
c:\filename.ext
c:\dir1\filename.ext
filename.ext

Good luck.

Tim Smith27-Nov-01 10:01

Tim Smith

27-Nov-01 10:01

Take a look at the MFC routine AfxGetFileName. You probably can't use it directly, but you can lift the code and use it in your app.

Tim Smith
Descartes Systems Sciences, Inc.

Carlos Antollini27-Nov-01 10:05

Carlos Antollini

27-Nov-01 10:05

You can USe _splitpath
Or if you want to use only MFC and CString
I will do this

strPath = "c:\\some path\\that could be deep\\this is\\file.txt";
strPath.MakeReverse();
strFileName = strPath.Rigth(strPath.Find('\\'));
strFileName.MakeReverse();

test because I wrote directly over CP....

Best Regards....

Carlos Antollini.
Sonork ID 100.10529 cantollini

RobJones27-Nov-01 10:16

RobJones

27-Nov-01 10:16

Thanks everyone!!

Rob