Folder/File Size?!? - C / C++ / MFC Discussion Boards

Re: Printing bitmap fails, but preview ok

Ravi Bhavnani10-Dec-01 4:14

10-Dec-01 4:14

Could you be more specific? I.e. where does it fail when you step thru the code?

/ravi

"There is always one more bug..."
ravib@ravib.com
http://www.ravib.com

Re: Printing bitmap fails, but preview ok

11-Dec-01 2:34

Hi Ravi,

I do not know where it fails. Looking to the the code below, there are to bitmaps. Loading the resource ID, you see the bitmap on preview, but does not print.

Using the compatible bitmap, I only see a black rectangle and I do yet not know how to load the bitmap here. But this black rectangle is printed.

int CListCtrlPrint::PrintBitmap (CDC *pDC, CRect rcBmp)
{
BITMAP bm;
CBitmap *pBitmap, *pOldBitmap, Bitmap;
CDC memDC;
int nW, nH, nDstW, nDstH;
BOOL bRC;

Bitmap.LoadBitmap (IDB_BITMAP2);
Bitmap.GetBitmap (&bm);

nW = bm.bmWidth;
nH = bm.bmHeight;

memDC.CreateCompatibleDC(pDC);

pBitmap = new CBitmap;
VERIFY(pBitmap->CreateCompatibleBitmap(pDC,nW,nH));

pOldBitmap = memDC.SelectObject (&Bitmap);
//pOldBitmap = memDC.SelectObject (pBitmap);

nDstW = nW * 8;
nDstH = nH * 5;

bRC = pDC->StretchBlt(rcBmp.left,
rcBmp.top,
rcBmp.right + nDstW,
rcBmp.bottom + nDstH,
&memDC, 0, 0, nW, nH, SRCCOPY);

if (!bRC)
AfxMessageBox(_T("Bitmap not drawn"));

memDC.SelectObject(pOldBitmap);

delete pBitmap;

return (nDstH + 75);
}

Perhaps this helps.

Re: Printing bitmap fails, but preview ok

11-Dec-01 4:03

Here is a solution not using StretchBlt() and using memDC.CreateCompatibleDC(NULL) with argument NULL.

int CListCtrlPrint::PrintBitmap (CDC *pDC, CRect rcBmp)
{
// this function prints bitmap

BITMAP bm;
CBitmap Bitmap, *pOldBitmap;
CDC memDC;
int nW, nH;

Bitmap.LoadBitmap (IDB_BITMAP2);
Bitmap.GetBitmap (&bm);

nW = bm.bmWidth;
nH = bm.bmHeight;

memDC.CreateCompatibleDC(NULL); // NULL !

pOldBitmap = memDC.SelectObject(&Bitmap);

pDC->BitBlt(rcBmp.left,
rcBmp.top,
rcBmp.left + nW,
rcBmp.top + nH,
&memDC, 0, 0, SRCCOPY);

memDC.SelectObject(pOldBitmap);

return (nH);
}

Preview and print ok, but bitmap very small (expand bitmap with Paint ...)

Re: Printing bitmap fails, but preview ok

C^hris L^osinger11-Dec-01 4:19

C^hris L^osinger

11-Dec-01 4:19

not all printers support StretchBlt. use GetDeviceCaps to test. if it doesn't support StretchBlt, you'll have to use StretchDIBits.

to fix the 'small image' problem, see SetViewportExt, SetWindowExt and SetMapMode.

-c

Smaller Animals Software, Inc.

Data binding with grid control

imranqau9-Dec-01 21:37

imranqau

9-Dec-01 21:37

Hi all!
How data could be displayed in db grid control using ado are some other technique.Is there anyone who can help me!
Thanks:

imran

How can I connect to a dialog in other class?

zrsoft9-Dec-01 20:26

zrsoft

9-Dec-01 20:26

I create a DIALOG project,and put a Edit control on the dialog,then define a variable through DDX:CEdit m_edit;
I create another class in the project,in this class, I want to give the variable 'm_edit' of the dialog a value,so I:
CMyDlg dlg;
dlg.m_edit.SetWindowText("sdjsd");
//or
CMyDlg* dlg;
dlg->m_edit.SetWindowText("sdksdlk");
The two method above is all wrong,help me plx,thanks very
much.
I want to know how to deal other dialog's content.

Re: How can I connect to a dialog in other class?

#realJSOP10-Dec-01 5:02

#realJSOP

10-Dec-01 5:02

1) This is a wholly bad idea. The dialog should be the one changing it's fields, not an external object.

2) If you insist on proceeding this way, you would do something like this:

// add this function to your dialog class:
CEdit* CMyDlg::GetEditCtrl()
{
    return (&m_edit);
}

// and then you should be able to do this in the calling object:
CMyDlg dlg;
dlg.GetEditCtrl()->SetWindowText("sdjsd");

Again, this is a REALLY bad way to set the contents of a control in a dialog box.

"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Folder/File Size?!?

Greven9-Dec-01 13:17

Greven

9-Dec-01 13:17

I have been racking my brain for a while now trying to make my program track down the size of a folder/file. I would like to track how much space a folder is using on the hard drive, which I have determined that means recursing through the sub folders and adding up the size of all files... Ugh! Is there an easier way? If not, the problem I'm running into at this point is simply finding the size of the file! I've looked into every which way of find the file sizes and they all want some variable/handle that I don't have... I've been looking through the code for the tree's here and have found some very nice tips and stuff, but of course (as always) they are in dialog boxes with special controls, yadda yadda yadda. (Doesn't anyone else use MFC with a doc/view?) But I'm not seeing how to add up the size of files and stuff. Please, someone help me out. I'm getting frustrated to the point that I can't even explain it right Dead | X|

Programming in binary is as easy as 01 10 11.

Re: Folder/File Size?!?

Richard Ellis9-Dec-01 15:44

Richard Ellis

9-Dec-01 15:44

G'Day Greven,

Maybe I have mis-understood what you are trying to do but you can use CFindFile to recurse sub directories. CFindFile has a member function GetLength() which returns the size of a found file. So it is easy to step through a directory and work out its size

something like will come close (cut and pasted from existing code so I may have chopped some bits out but you should get the drift)

TraverseDirectory(CString strDirectory)
{
int nBytes = 0;
BOOL bWorking = finder.FindFile(strDirectory);

while (bWorking)
{
bWorking = finder.FindNextFile();

strFileName = finder.GetFilePath();

if (finder.IsDirectory())
{
if (!finder.IsDots())
TraverseDirectory(strFileName);

} else {
nBytes = finder.GetLength();
}
}

You can also use GetDiskFreeSpaceEx to determine free space information.

Hope that helps.

Richard.

Re: Folder/File Size?!?

Greven9-Dec-01 17:21

Greven

9-Dec-01 17:21

That is exactly what I have been looking for... Thank you very much. And you know the worst part? I've used CFindFile many times before... Just never noticed the GetLength() function... (maybe it's just a really bad name for it Poke tongue | ;-P

Programming in binary is as easy as 01 10 11.

Re: Folder/File Size?!?

Ravi Bhavnani11-Dec-01 5:33

Ravi Bhavnani

11-Dec-01 5:33

You can also use CFile::GetStatus() to get the size of any file.

/ravi

"There is always one more bug..."
ravib@ravib.com
http://www.ravib.com

CMDIChildWnd and CView

9-Dec-01 12:20

Hi there

I have MDI application.
Child MDI window consists of CMDIChildWnd and CView.
What events and what situation I should handle in
CMDIChildWnd and what I should handle in CView?

Second question, if I need to change size of CView then
I have also change
size of CMDIChildWnd, is it true?

In CView I inserted CPropertySheet and I need to make size of child MDI
window the same as size of inserted CPropertySheet, what is the right way to do it?

small question

diego__9-Dec-01 8:19

diego__

9-Dec-01 8:19

how can i change the SELECTION color of an edit?
(the default color looks bad with my custom ui Wink | ;-)

)
thanks in advance

Re: small question

Ravi Bhavnani9-Dec-01 8:38

Ravi Bhavnani

9-Dec-01 8:38

http://www.codeproject.com/editctrl/ceditbkcolor.asp

/ravi

"There is always one more bug..."
http://www.ravib.com
ravib@ravib.com

Re: small question

diego__9-Dec-01 8:53

diego__

9-Dec-01 8:53

actually i mean the background color of selected text
(any other than rgb(0,0,128) which is the default color for that)

any ideas ?

Reading/Writing in Binary

valikac9-Dec-01 6:09

valikac

9-Dec-01 6:09

Hi,
I have a complicated (to me) problem reading/Writing data in binary. Here is what I am doing.

For example let say a text file has the following:
File: test.txt
-----------------
1234a5678b9
-----------------

Here is what I am doing:

istream inData;
ostream outData;
inData.open("test.txt", ios::in | ios::binary);
outData.open("modified.txt", ios::out | ios::binary);
inData.seekg(0, ios::end);
int size = inData.tellg();

char *temp;
temp = new char[size + 2];

inData.read(reinterpret_cast<char *="">(temp), size);

temp[size + 1] = 'c';
temp[size + 2] = 'd';

outData.write(reinterpret_cast<char *="">(temp), (size + 2);

-----------------------------------------------------

The code above should work okay. As you can see, all I am doing is reading data from a file, add two characters "c" and "d" and then writing it back to the file. Everything is fine.

Now, let say I read the modified file back.

Here is what I am doing:

istream modData;
ostream weird;

modData.open("modified.txt", ios::in | ios::binary);
weird.open("hungry", ios::out | ios::binary);

inData.seekg(0, ios::end);
int size = inData.tellg();

char *temp, charA, charB;
temp = new char[size];

inData.read(reinterpret_cast<char *="">(temp), size);

charA = temp[size - 2];
charB = temp[size - 1];

-----------------------------------------------------

Do you see what I am trying to doing?

1)read fileA in binary
2)save data from fileA to tempX
3)add characters to tempY
4)write temp to fileB

-----------------------
1)read fileB in binary
2)save data from fileB to tempZ
3)extract ONLY those characters I added to tempX from tempZ
-----------------------

The method I use to extract the added characters from the modified file after I read it back is subscript. I assume let say temp[5] is 'a'. When I read the data back, I look at temp[5].

My question is when you read a file in binary, add characters to it in specific spaces and write it to modified file, is it possible to read the data from the modified file and extract those characters you added via assumption subscript? How are data saved when you read and write in binary?

Thanks,
Kuphryn

Re: Reading/Writing in Binary

Rick York9-Dec-01 6:29

Rick York

9-Dec-01 6:29

I see some problems with what you are doing.

First, arrays are zero-based. To append two characters to the end of an array of size means you write to temp[size] and temp[size+1]. The write command with (size+2) is then correct. Accessing [size+2] means you must allocate and write (size+3) items. The last of the original data will be at index (size-1).

To extract only the characters you added then seek to position size on your input stream and then read 2 items.

Re: Reading/Writing in Binary

valikac9-Dec-01 6:40

valikac

9-Dec-01 6:40

Interesting. Thanks.

I got everything write. When I read teh modified data back, sometimes it comes out right and sometimes it does not. I do not know if it is writing the modified file differently everytime.

Kuphry

recreating IntelliSense stores ?

Cernd9-Dec-01 6:01

Cernd

9-Dec-01 6:01

Is possible to rebuild IntelliSense ASC stores found in <msvs-root>\Common\MSDev98\Bin (Win32.ncb, Mfcatl.ncb and Crt.ncb) ? Simply deleting them only disables code editor's IntelliSense features Frown | :-(

I'd needed to recreate them because they contains in some instances improper data, f.E. incorrect number of function parameters, wrong return type etc. - it could be very confusing.
Does anybody know how to solve this problem or knows something about internal format of .ncb files ? I know there is a good replacement called Visual Assist from WholeTomato software but it isn't free Frown | :-(

Thx

Cernd

Non-resizable CMainFrame

r2d2rigo9-Dec-01 4:17

r2d2rigo

9-Dec-01 4:17

In my SDI MFC app there's a CMainFrame, and I don't want it to be resizable. How I can do that? Thanks for the help

Re: Non-resizable CMainFrame

9-Dec-01 5:02

Remove the WS_THICKFRAME style

Nish

Re: Non-resizable CMainFrame

r2d2rigo10-Dec-01 10:27

r2d2rigo

10-Dec-01 10:27

Where can I find it??? in the CREATESTRUCT cs??? In the MSDN there isn't any help for the CREATESTRUCT

Hetrogenous Server/Client

9-Dec-01 4:15

Hi,
I need to know that whether its possible to have server based on WinSock and Client based on CAsyncSocket?

I tried so but did not succeed.. Before i put my full efforts i need to nkow if it is possible or not..

If there is something special work needed to be done to make it work, then do specify it..

Thanking u in advance

RawCoder

Re: Hetrogenous Server/Client

Masaaki Onishi9-Dec-01 17:00

Masaaki Onishi

9-Dec-01 17:00

Hello, the codegurus around the world.;)

I believe that this is possible. Cool | :cool:

Did you read the source code of CAsyncSocket.
In fact, CAsyncSocket uses the class wrapped by Asyncrous Socket with
Windows Socket API.
So, if you use Server side Window API with Asyncrous Socket code,
it is easier to implement them.

Maybe, blocking or non-blocking socket may work? Confused | :confused:

Please, don't send me your email about your questions directly.
Have a nice day!
Sonork - 100.10571:vcdeveloper Wink | ;)

-Masaaki Onishi-

Help with network

Philip Patrick9-Dec-01 3:48

Philip Patrick

9-Dec-01 3:48

If you have a network (LAN), go to your network connections in Control Panel and right click on the Local Area Connection (or whatever you have there). You can make it "Enable" or "Disable" (connect or disconnect). Now my question is how to do this programmatically in Windows 2000? I was looking in MSDN and didn't find nothing.... Change user info, get domains.... all what you want but not something like Connect or Login.
IF someone knows the answer, please tell me Wink | ;)

Thanx

Philip Patrick

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