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Changing the font of the CTabCtrl

Mark Donkers14-Nov-01 17:16

Mark Donkers

14-Nov-01 17:16

I'm trying to change the font of a CTabCtrl. Can anyone help me? Confused | :confused:

Re: Changing the font of the CTabCtrl

Nish Nishant14-Nov-01 18:28

Nish Nishant

14-Nov-01 18:28

CTabCtrl is derived from CWnd
You can use CWnd::SetFont

Nish

Sonork ID 100.9786 voidmain

www.busterboy.org

Nish is a BIG fan of Goran Ivanisevic

Re: Changing the font of the CTabCtrl

Mark Donkers15-Nov-01 3:07

Mark Donkers

15-Nov-01 3:07

It worked. Thanks. Now how do I change the font color and make it bold? I searched the MSDN but, being a newbie, I didn't know what I was lookin' for.

Confused | :confused:

Re: Changing the font of the CTabCtrl

Nish Nishant15-Nov-01 3:25

Nish Nishant

15-Nov-01 3:25

making it bold is easy
just set a suitable nWeight if you are using CreateFont or a suitable lfWeight if you are using CreateFontIndirect and making the font from a LOGFONT

not sure its that easy to change the color
You might have to owner draw or something

Nish

Sonork ID 100.9786 voidmain

www.busterboy.org

Nish is a BIG fan of Goran Ivanisevic

redirecting display to go to printer

14-Nov-01 14:59

I am using just DOS based C++ and need to know how to redirect the output to go to the printer. This is what I have to work with but am not sure ow to implement it in the .h

ofstream printer("LPT1",ios::out)

printer << data << "line of code";

Any ideas?

How to get and set colors of the each pixel in a bitmap?

chen14-Nov-01 14:25

chen

14-Nov-01 14:25

Hi,

Would you please tell me that how to
get and set the rgb color for each pixel in a
bitmap image. In addition, are there getpixel()
and setpixel() functions in CDIB class?
Thanks in Advance!

chen

Re: How to get and set colors of the each pixel in a bitmap?

Christian Graus14-Nov-01 14:29

Christian Graus

14-Nov-01 14:29

Well, you could use GetPixel/SetPixel but that's pretty slow. Any DIBSection wrapper ( which I presume CDIB is ) would however store a pointer to the bitmap data, which you can then access directly.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Re: How to get and set colors of the each pixel in a bitmap?

chen14-Nov-01 14:46

chen

14-Nov-01 14:46

Thanks for your reply!

I cannot find the GetPixel() and Setpixel() functions
in CDIB class Lib. Would you please show these source
code?

chen

Re: How to get and set colors of the each pixel in a bitmap?

Christian Graus14-Nov-01 14:49

Christian Graus

14-Nov-01 14:49

I dunno what CDIB is, CDC is the class that has the Set/GetPixel methods, and they are still VERY slow.

Where did you get the CDIB class ? Is it a DIBSECTION wrapper ?

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Re: How to get and set colors of the each pixel in a bitmap?

chen14-Nov-01 14:59

chen

14-Nov-01 14:59

The CDIB class i used is wrote by Jorge Lodos (lodos@cigb.edu.cu) in 1998.
But there is no GetPixel and SetPixel function.
It looks like that:

// dib.h

#ifndef _INC_DIB
#define _INC_DIB

/* DIB constants */
#define PALVERSION 0x300

/* Dib Header Marker - used in writing DIBs to files */
#define DIB_HEADER_MARKER ((WORD) ('M' << 8) | 'B')

/* DIB Macros*/
#define RECTWIDTH(lpRect) ((lpRect)->right - (lpRect)->left)
#define RECTHEIGHT(lpRect) ((lpRect)->bottom - (lpRect)->top)

// WIDTHBYTES performs DWORD-aligning of DIB scanlines. The "bits"
// parameter is the bit count for the scanline (biWidth * biBitCount),
// and this macro returns the number of DWORD-aligned bytes needed
// to hold those bits.

#define WIDTHBYTES(bits) (((bits) + 31) / 32 * 4)

class CDib : public CObject
{
DECLARE_DYNAMIC(CDib)

// Constructors
public:
CDib();

public:
CPalette* m_pPalette;
LPBYTE m_pBits;
LPBITMAPINFO m_pBMI;

public:
DWORD Width() const;
DWORD Height() const;
WORD NumColors() const;
BOOL IsValid() const { return (m_pBMI != NULL); }

// Operations
public:
BOOL Paint(HDC, LPRECT, LPRECT) const;
HGLOBAL CopyToHandle() const;
DWORD Save(CFile& file) const;
DWORD Read(CFile& file);
DWORD ReadFromHandle(HGLOBAL hGlobal);
void Invalidate() { Free(); }
virtual void Serialize(CArchive& ar);
/* new added by chen 2001.11.14*/
void SetPixel( int iX, int iY, RGBQUAD& rgbPixel );
RGBQUAD GetPixel(int iX, int iY);
void AssertPosition( int iX, int iY );

// Implementation
public:
virtual ~CDib();

protected:
BOOL CreatePalette();
WORD PaletteSize() const;
void Free();

public:
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
#endif

protected:
CDib& operator = (CDib& dib);
};

#endif //!_INC_DIB

chen

Re: How to get and set colors of the each pixel in a bitmap?

chen14-Nov-01 15:09

chen

14-Nov-01 15:09

Dear Christian,

My really problem is:
In order to change the colour of the text in a bitmap image,
the text is viewed as image pixels. But i want to show the
process of the colour changes. The problem may occured:
can i control the change process of the colour as I needed?
or is there other good methods?

Thanks a lot!

chen

Re: How to get and set colors of the each pixel in a bitmap?

Christian Graus14-Nov-01 15:55

Christian Graus

14-Nov-01 15:55

chen wrote:
In order to change the colour of the text in a bitmap image,
the text is viewed as image pixels. But i want to show the
process of the colour changes. The problem may occured:
can i control the change process of the colour as I needed?
or is there other good methods?

Have I answered this already ? If you want to change the text colour, the reliable way is to draw the text yourself and change the colour yourself. It's also the fastest.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Re: How to get and set colors of the each pixel in a bitmap?

Christian Graus14-Nov-01 15:57

Christian Graus

14-Nov-01 15:57

chen wrote:
The CDIB class i used is wrote by Jorge Lodos (lodos@cigb.edu.cu) in 1998.
But there is no GetPixel and SetPixel function.

Like I said, Get/SetPixel are methods of CDC.

chen wrote:
LPBYTE m_pBits;

There's your pointer to the bitmap data, just like I said. I suggest you write a Get/SetPixel method to work with this, it will be nice and fast then, although not as fast as iterating through in a tight loop.

Do you need to deal with paletised images ? How about 16 bit ? Both of those will be a pain, 24/32 bit is nice and easy.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

NewB question of the day

RobJones14-Nov-01 11:20

RobJones

14-Nov-01 11:20

NewB question of the day.

I am reading an article here at code project and it says to create my dialog type app and then add some controls next it states to:

"Using ClassWizard, create a CDialog-derived class for your dialog resource. Change the base class from CDialog to CNewDialog.."

I'm not sure how to do this from the ClassWizard.. Is it the same as going into the .h and .ccp files of my dialog and changing all occurrences of CDialog to CNewDialog?

Thanks,

Rob

Re: NewB question of the day

Bill Wilson14-Nov-01 11:25

Bill Wilson

14-Nov-01 11:25

While in the dialog editor, hold the ctrl key and double click the dialog (not on a control). It will invoke the class wizard for you and do the necessary things...

Hope this helps,
Bill

Color Usage in CreateDIBitmap

AJ12314-Nov-01 11:20

AJ123

14-Nov-01 11:20

Hi,

I use the Video For Windows function AVIStreamGetFrame which returns a Packed DIB.

I then convert it to a DDB using the following code fragment:

HDC hDc=GetDC(NULL);

BITMAPINFOHEADER* bminfoheader;
BITMAPINFO* bminfo;
LPVOID bits;

bminfoheader=(BITMAPINFOHEADER*)lpbi;
bminfo=(BITMAPINFO*)lpbi;
bits = bminfoheader->biSize + (char *)lpbi;

HBITMAP hbitmap = CreateDIBitmap(hDc, bminfoheader, CBM_INIT, bits, bminfo, DIB_RGB_COLORS);

My concern is the colour usage parameter in createDIBitmap, could there be a situation where AVIStreamGetFrame returns a image which uses DIB_PAL_COLORS.

Would DIB_PAL_COLORS have any effect on calls to GetPixel and SetPixel, when the image is selected into a device context?

Thanks Again

Richard

Using Server Idle Time

AJ12314-Nov-01 11:10

AJ123

14-Nov-01 11:10

Hi
I have a processor demanding task, converting files on a server. What i want to do, is to avoid creating a bottleneck on the server. So i want to process a single file say every minute, leaving the server free in the meantime. Can anyone recommend and give details of a method i could use. Somebody recommended threads?

Cheers

Richard

Re: Using Server Idle Time

Anders Molin14-Nov-01 14:22

Anders Molin

14-Nov-01 14:22

You *could* use Sleep(60000); to suspend your program for a minute.
If you convert a file every minute, your server would be slow while the conversion is in progress...

I would make a thread with a very low priority, and just make that thread process all the conversions it could.

When the server is idle, it would use 100% cpu, but when another program need processor time it would get it, because it have a higher priority that your thread have. Your server would be just as fast as it always have been, but use all it's idle time to convert your files. Smile | :)

- Anders

Money talks, but all mine ever says is "Goodbye!"

Interaction

Ever123414-Nov-01 9:26

Ever1234

14-Nov-01 9:26

Does anyone know how to make a program that will interact with a web page (create a game ladder for leages and such)? I know it is possible.

"To wonder is to begin to understand"

Re: Interaction

Anders Molin14-Nov-01 14:26

Anders Molin

14-Nov-01 14:26

You can make a program that *generates* a webpage.

If you use IIS it could be an IISAPI filter written in VC, or a COM Object (used from an ASP page).
You could also just write the code in ASP (scripting).

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: Interaction

Mark Terrano16-Nov-01 11:55

Mark Terrano

16-Nov-01 11:55

If you're just creating the page, then you can generate HTML as text, and save the file out.

Write your HTML to the file just like you would do if you were hand editing (or make the HTML with your favorite editor, view it in Source, and cut and paste this into your program. Substitute your dynamic content, and just write the .HTM file like you normally would.

Couple tips:

I added an HTML line to cause the page to refresh every 5 minutes to show the most recent data automatically - it might be useful for your ladder page.

I found it useful on the page to substitute the default quote " as a parameter for single quotes - this stopped me from having to define all my commands with a lot of SIZE=\"%d\" etc. I could just do SIZE='%d' COLOR='%X'etc.

--Mark Terrano
www.ensemblestudios.com
(Creators of the Age of Empires series)

StatusBar in a Dialog

14-Nov-01 7:16

how can i put a Status Bar in a Dialog? i've tried using the same code as a FrameWindow from Document/View architecture, but it doesn't work. please help

CDC... I wan't the client area HOW TO

Remi Morin14-Nov-01 5:38

Remi Morin

14-Nov-01 5:38

I have a problem to read the client area and then create my clipping region.
I was doing MyDc->GetWindow()->GetClientRect(&MyRect); but when I'm printing... this function do not work... so How can I get all the client area of the Dc...
any help

Thanks

Remi Morin
Rmorin@Operamail.com
Remi.Morin@Lyrtech.com

Re: CDC... I wan't the client area HOW TO

14-Nov-01 7:13

you can try using CClientDC to get ONLY the Client Area

TIP: Problems comparing COleDateTime objects + COleDateTimeSpan accumulated errors

14-Nov-01 5:28

Hello,

[1]
I detected the following problem with the COleDateTime ==, <, >, <=, >= operators.
A COleDateTime object is internally represented by a double. So, when comparing two COleDateTime's it is in fact two doubles that are being compared and this means trouble.
I saw that 2 COleDateTime's that were perfectly equal (in human readable format) were indicated as not equal with the COleDateTime == operator.

Solution is to do the comparing yourself based on a stringcompare of the COleDateTimes.
These are the function's that I am using now.

BOOL DatesEqual(COleDateTime &odt1, COleDateTime &odt2)
{
  CString str1 = odt1.Format();
  CString str2 = odt2.Format();

  return (!str1.Compare(str2));
}

BOOL DateSmallerThan(COleDateTime &odt1, COleDateTime &odt2)
{
  if (DatesEqual(odt1, odt2)) return FALSE;
  else return odt1 < odt2;
}

BOOL DateGreaterThan(COleDateTime &odt1, COleDateTime &odt2)
{
  if (DatesEqual(odt1, odt2)) return FALSE;
  else return odt1 > odt2;
}

BOOL DateSmallerThanOrEqual(COleDateTime &odt1, COleDateTime &odt2)
{
  if (DatesEqual(odt1, odt2)) return TRUE;
  else return odt1 < odt2;
}

BOOL DateGreaterThanOrEqual(COleDateTime &odt1, COleDateTime &odt2)
{
  if (DatesEqual(odt1, odt2)) return TRUE;
  else return odt1 > odt2;
}

[2]
Another aid in programming more accurate when using COleDateTimeSpan's is the following.
Suppose you want to produce a sequence of 15 minute ColeDateTime's, starting at some point in time. Normally, one would program this something like:

COleDateTimeSpan span;
span = COleDateTimeSpan(0,0,15,0);
ColeDateTime StartTime, DateTimeWalker;
StartTime = ...; //init with the first moment
DateTimeWalker = StartTime;
for(int i=0; i<NR_OF_QUARTERS; i++)
{
  //do something with DateTimeWalker
  ...
  DateTimeWalker += span;
}

However, it is more accurate to replace the body of the loop by:

{
  COleDateTimeSpan dtsSpan(0,0,i*15,0);
  COleDateTime TimeToUse = StartTime + dtsSpan;
  //do something with TimeToUse
  ...
}

This way, no error is accumulated during the loop, resulting in an almost perfect value for the variable TimeToUse even for the last loop iteration.

Anyone (dis)agrees with this?
Other ideas?

Bye
Geert

Last Visit: 31-Dec-99 18:00 Last Update: 9-Jun-24 13:05

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